Contract 0xae4f61015ab7cc11b3dc53c81383207e4041089c

Txn Hash Method
Block
From
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Value [Txn Fee]
0x9f92df072d2e048a4946a8deff94527dfa3509c25ed763273ff96d3c98f17c64Deposit236253052021-12-01 0:59:101 hr 55 mins ago0x48abc2313bb5e3484ab629d9cc44cd1fe52591c5 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.030625859888
0x8aec2f8c29350a423a11b67eb2db5fad8ad2b1e75653acfbcb6de02ad3acbec0Withdraw236251302021-12-01 0:56:061 hr 58 mins ago0x48abc2313bb5e3484ab629d9cc44cd1fe52591c5 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.019330260544
0x3c0386f89f2fccb620cdbe6beb4a40058c36b3f4b4085ec2b4110738fa0e3663Deposit236250462021-12-01 0:54:132 hrs ago0x48abc2313bb5e3484ab629d9cc44cd1fe52591c5 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.012242747388
0x234939e817cd6b55b067994f0796cfbfbed6edb17fa581b1083978732b32439aWithdraw235879292021-11-30 15:58:0810 hrs 56 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.022215871407
0x8342aa90955306a452c1771b40f84a6fec9db666c550f0ada05d0f9b63d898b8Withdraw235879212021-11-30 15:57:5810 hrs 56 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.022213751471
0x5e566d6297121f4c05829e0dde7d9990ecbaccae747d70c9c6c0e1d1034a135dWithdraw235879142021-11-30 15:57:4810 hrs 56 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.022178749666
0x1a44b3e3bfb3f1b94a15cb209dc7581ef7685d54a957d5d38db7ca469ffed069Withdraw235879062021-11-30 15:57:3710 hrs 56 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.022180865622
0x42daf50e7bdb938e96dc55feb6b195d3e5d0b9738b922cd69d47b41a57ac7355Withdraw235868812021-11-30 15:39:4411 hrs 14 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.03383853689
0xfd9c8e5a0763b1d22653918e9b53de37e5e2204553d092625672e72e7f0cbe9dWithdraw235868392021-11-30 15:39:0411 hrs 15 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.016706225707
0x4fa4abff3cc39aaa3428ae092b95232038abd61e8614b4aaf35875627b5d94f5Withdraw235867912021-11-30 15:38:0311 hrs 16 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.014605017086
0x833e3acda6a0cf85c343b91af08b4e79cda30074990e33d413b52ea0ad4c8ebdWithdraw235860362021-11-30 15:27:5511 hrs 26 mins ago0x111b382d5b6c6f562297a69415fd21bc701c0a8c IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.02201605
0x8656c51fbec8e481a898dbb99e6a282f2e4d9259220989385c148b7082e0a872Deposit235843202021-11-30 15:03:4811 hrs 50 mins ago0x111b382d5b6c6f562297a69415fd21bc701c0a8c IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.020666247339
0x1e18ea41f9f3e5c2341ce4ed551a4465f1b5370388063b16f9abd7cdaa4fe451Withdraw235842732021-11-30 15:02:5811 hrs 51 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.02388954995
0x1cca178c8e9e04302a4927934ee55240f45ea9cb1c63e1233bb3bba8a2fe2496Deposit235841962021-11-30 15:01:4411 hrs 52 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.01921185082
0xed1d209524ebd11970a65cae019f3c3ebfcf87f1de0baa12099abc68852eca6fDeposit235839012021-11-30 14:57:3611 hrs 56 mins ago0x111b382d5b6c6f562297a69415fd21bc701c0a8c IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.02459135
0xe44b8d039c8478175ddef76b1c20135d8dca6d9926024b04d3958d05fe4fae52Deposit235769722021-11-30 13:17:4213 hrs 36 mins ago0x111b382d5b6c6f562297a69415fd21bc701c0a8c IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.05430322386
0x81b21ab23b48d6d58833ece7a1126ee08e4843d8391ddae8ec2e1ac603edd6d6Withdraw235745402021-11-30 12:36:5614 hrs 17 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.014134716713
0x40ac32a1ad4174bbaac1dda342cc49d64526ed564bb951b458b814ef61d2cd4aDeposit235718212021-11-30 11:57:2214 hrs 57 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.026525691867
0xa33abdcc7d5c70a68098ce444e44f4a12451654ad50966457f4778fc599a928eDeposit235717492021-11-30 11:56:1914 hrs 58 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.011370316551
0xfe3fcc78c7e4c02fe5c53844dd1b78ae4b20bda62d4de02a570ba03c17a181a9Deposit235716492021-11-30 11:54:5414 hrs 59 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.021474921119
0x36b75940072495a8f4369be29543f7b4589f185dfd41317cb39af589aca7679aDeposit235711012021-11-30 11:46:3115 hrs 7 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.010999486019
0xb0afe39ad4c253a0d48eecf994daf3e9599f86f998cbb5a12bd120e3bb7ba72fDeposit235709212021-11-30 11:43:5615 hrs 10 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.011881486405
0x84bc6fc654a449d8cc32ae9fd5ddfe970abdfce3446a37dcaa1f5b33504dd50eDeposit235707702021-11-30 11:41:4315 hrs 12 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.023492069072
0x487a1e392da6ed0d98706ba211cbcc43abb5175201c0b5c6c5ba1fd8d8f367a1Deposit235706992021-11-30 11:40:4315 hrs 13 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.023804050097
0x6a4569394fe422408cafaea892f4836a40d969ab6e1fa66dd6b386303a0e8f83Deposit235705652021-11-30 11:38:5715 hrs 15 mins ago0x4288bc3b27e7a8905977d2e0d4ff4032bb3d8446 IN  0xae4f61015ab7cc11b3dc53c81383207e4041089c0 FTM0.02416500898
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0xbdf3e62f742a9f2ab941815a0a258ec0f4e6ce20fdd23c0134c85e1d1b9eb107227432652021-11-21 22:42:209 days 4 hrs ago 0x46d23242de21cf6a764ca202fffae08f74bdb5b0  Contract Creation0 FTM
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Contract Source Code Verified (Exact Match)

Contract Name:
KnightsMasterChef

Compiler Version
v0.6.12+commit.27d51765

Optimization Enabled:
Yes with 200 runs

Other Settings:
default evmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at FtmScan.com on 2021-11-21
*/

// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;


/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor () internal {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        require(isContract(target), "Address: delegate call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}


interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address _owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}


contract ERC20 is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using Address for address;

    mapping(address => uint256) private _balances;

    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name, string memory symbol) public {
        _name = name;
        _symbol = symbol;
        _decimals = 18;
    }

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external override view returns (address) {
        return owner();
    }

    /**
     * @dev Returns the token name.
     */
    function name() public override view returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the token decimals.
     */
    function decimals() public override view returns (uint8) {
        return _decimals;
    }

    /**
     * @dev Returns the token symbol.
     */
    function symbol() public override view returns (string memory) {
        return _symbol;
    }

    /**
     * @dev See {ERC20-totalSupply}.
     */
    function totalSupply() public override view returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {ERC20-balanceOf}.
     */
    function balanceOf(address account) public override view returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {ERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {ERC20-allowance}.
     */
    function allowance(address owner, address spender) public override view returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {ERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {ERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20};
     *
     * Requirements:
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for `sender`'s tokens of at least
     * `amount`.
     */
    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(
            sender,
            _msgSender(),
            _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")
        );
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {ERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {ERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
        _approve(
            _msgSender(),
            spender,
            _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")
        );
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal {
        require(account != address(0), "ERC20: mint to the zero address");

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
     *
     * This is internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

}

// Knights.
contract Knights is ERC20('Knights', 'KNIGHTS') {
    
    /// @notice Creates `_amount` token to `_to`. Must only be called by the owner (MasterChef).
    function mint(address _to, uint256 _amount) public onlyOwner {
        _mint(_to, _amount);
    }

    constructor (
        address _masterchef
    ) public {
        transferOwnership(_masterchef);
    }

}

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(
            value,
            "SafeERC20: decreased allowance below zero"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// MasterChef is the master of Knights Token. He can make Knights Tokens and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once knights is sufficiently
// distributed and the community can show to govern itself.
//
// Have fun reading it. Hopefully it's bug-free. God bless.
contract KnightsMasterChef is Ownable, ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    // Info of each user.
    struct UserInfo {
        uint256 amount;         // How many LP tokens the user has provided.
        uint256 rewardDebt;     // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of knights
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accKnightsPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accKnightsPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }

    // Info of each pool.
    struct PoolInfo {
        IERC20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. ALPHAs to distribute per block.
        uint256 lastRewardBlock;  // Last block number that Knights distribution occurs.
        uint256 accKnightsPerShare;   // Accumulated Knights per share, times 1e18. See below.
        uint16 depositFeeBP;      // Deposit fee in basis points
        uint256 lpSupply;
    }

    // The Knights TOKEN!
    Knights public immutable token;
    // Dev address.
    address public devaddr;
    // Knights tokens created per block.
    uint256 public KnightsPerBlock;
    // Deposit Fee address
    address public feeAddress;

    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping(uint256 => mapping(address => UserInfo)) public userInfo;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when Knights mining starts.
    uint256 public startBlock;

    // Maximum KnightsPerBlock
    uint256 public MAX_EMISSION_RATE = 1 ether;


    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event SetFeeAddress(address indexed user, address indexed newAddress);
    event SetDevAddress(address indexed user, address indexed newAddress);
    event UpdateEmissionRate(address indexed user, uint256 KnightsPerBlock);
    event addPool(uint256 indexed pid, address lpToken, uint256 allocPoint, uint256 depositFeeBP);
    event setPool(uint256 indexed pid, address lpToken, uint256 allocPoint, uint256 depositFeeBP);
    event UpdateStartBlock(uint256 newStartBlock);
    event KnightsMintError(bytes reason);

    constructor(
        Knights _tokenAddress,
        address _devaddr,
        address _feeAddress,
        uint256 _KnightsPerBlock,
        uint256 _startBlock
    ) public {
        token = _tokenAddress;
        devaddr = _devaddr;
        feeAddress = _feeAddress;
        KnightsPerBlock = _KnightsPerBlock;
        startBlock = _startBlock;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    mapping(IERC20 => bool) public poolExistence;
    modifier nonDuplicated(IERC20 _lpToken) {
        require(poolExistence[_lpToken] == false, "nonDuplicated: duplicated");
        _;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    function add(uint256 _allocPoint, IERC20 _lpToken, uint16 _depositFeeBP, bool _withUpdate) external onlyOwner nonDuplicated(_lpToken) {
        // valid ERC20 token
        _lpToken.balanceOf(address(this));

        require(_depositFeeBP <= 400, "add: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolExistence[_lpToken] = true;
        poolInfo.push(
            PoolInfo({
                lpToken : _lpToken,
                allocPoint : _allocPoint,
                lastRewardBlock : lastRewardBlock,
                accKnightsPerShare : 0,
                depositFeeBP : _depositFeeBP,
                lpSupply: 0
            })
        );

        emit addPool(poolInfo.length - 1, address(_lpToken), _allocPoint, _depositFeeBP);
    }

    // Update the given pool's Knights allocation point and deposit fee. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, bool _withUpdate) external onlyOwner {
        require(_depositFeeBP <= 400, "set: invalid deposit fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;

        emit setPool(_pid, address(poolInfo[_pid].lpToken), _allocPoint, _depositFeeBP);
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public pure returns (uint256) {
        return _to.sub(_from);
    }

    // View function to see pending Alphas on frontend.
    function pendingKnights(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accKnightsPerShare = pool.accKnightsPerShare;
        if (block.number > pool.lastRewardBlock && pool.lpSupply != 0 && totalAllocPoint > 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 KnightsReward = multiplier.mul(KnightsPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
            accKnightsPerShare = accKnightsPerShare.add(KnightsReward.mul(1e18).div(pool.lpSupply));
        }
        return user.amount.mul(accKnightsPerShare).div(1e18).sub(user.rewardDebt);
    }

    // Update reward variables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        if (pool.lpSupply == 0 || pool.allocPoint == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 KnightsReward = multiplier.mul(KnightsPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
        
        try token.mint(devaddr, KnightsReward.div(10)) {
        } catch (bytes memory reason) {
            KnightsReward = 0;
            emit KnightsMintError(reason);
        }
        
        try token.mint(address(this), KnightsReward) {
        } catch (bytes memory reason) {
            KnightsReward = 0;
            emit KnightsMintError(reason);
        }
        
        pool.accKnightsPerShare = pool.accKnightsPerShare.add(KnightsReward.mul(1e18).div(pool.lpSupply));
        pool.lastRewardBlock = block.number;
    }
    
    // Deposit LP tokens to MasterChef for Knights allocation.
    function deposit(uint256 _pid, uint256 _amount) external nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = user.amount.mul(pool.accKnightsPerShare).div(1e18).sub(user.rewardDebt);
            if (pending > 0) {
                safeKnightsTransfer(msg.sender, pending);
            }
        }
        if (_amount > 0) {
            uint256 balanceBefore = pool.lpToken.balanceOf(address(this));
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            _amount = pool.lpToken.balanceOf(address(this)) - balanceBefore;
            if (pool.depositFeeBP > 0) {
                uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);
                pool.lpToken.safeTransfer(feeAddress, depositFee);
                user.amount = user.amount.add(_amount).sub(depositFee);
                pool.lpSupply = pool.lpSupply.add(_amount).sub(depositFee);
            } else {
                user.amount = user.amount.add(_amount);
                pool.lpSupply = pool.lpSupply.add(_amount);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accKnightsPerShare).div(1e18);
        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) external nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accKnightsPerShare).div(1e18).sub(user.rewardDebt);
        if (pending > 0) {
            safeKnightsTransfer(msg.sender, pending);
        }
        if (_amount > 0) {
            user.amount = user.amount.sub(_amount);
            pool.lpToken.safeTransfer(address(msg.sender), _amount);
            pool.lpSupply = pool.lpSupply.sub(_amount);
        }
        user.rewardDebt = user.amount.mul(pool.accKnightsPerShare).div(1e18);
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) external nonReentrant {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        user.amount = 0;
        user.rewardDebt = 0;
        pool.lpToken.safeTransfer(address(msg.sender), amount);

        if (pool.lpSupply >=  amount) {
            pool.lpSupply = pool.lpSupply.sub(amount);
        } else {
            pool.lpSupply = 0;
        }

        emit EmergencyWithdraw(msg.sender, _pid, amount);
    }

    // Safe Knights transfer function, just in case if rounding error causes pool to not have enough ALPHAs.
    function safeKnightsTransfer(address _to, uint256 _amount) internal {
        uint256 KnightsBal = token.balanceOf(address(this));
        bool transferSuccess = false;
        if (_amount > KnightsBal) {
            transferSuccess = token.transfer(_to, KnightsBal);
        } else {
            transferSuccess = token.transfer(_to, _amount);
        }
        require(transferSuccess, "safeKnightsTransfer: transfer failed");
    }

    // Update dev address.
    function setDevAddress(address _devaddr) external {
        require(msg.sender == devaddr, "setDevAddress: ACCESS DENIED");
        require(_devaddr != address(0), "setDevAddress: INCORRECT INPUT");
        devaddr = _devaddr;
        emit SetDevAddress(msg.sender, _devaddr);
    }

    function setFeeAddress(address _feeAddress) external {
        require(msg.sender == feeAddress, "setFeeAddress: ACCESS DENIED");
        require(_feeAddress != address(0), "setFeeAddress: INCORRECT INPUT");
        feeAddress = _feeAddress;
        emit SetFeeAddress(msg.sender, _feeAddress);
    }

    // Pancake has to add hidden dummy pools inorder to alter the emission, here we make it simple and transparent to all.
    function updateEmissionRate(uint256 _KnightsPerBlock) external onlyOwner {
        require(_KnightsPerBlock <= MAX_EMISSION_RATE, "INCORRECT INPUT");
        massUpdatePools();
        KnightsPerBlock = _KnightsPerBlock;
        emit UpdateEmissionRate(msg.sender, _KnightsPerBlock);
    }

    // Only update before start of farm
    function updateStartBlock(uint256 _newStartBlock) external onlyOwner {
        require(block.number < startBlock, "FARM ALREADY STARTED");
        require(block.number < _newStartBlock, "INCORRECT INPUT");
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            PoolInfo storage pool = poolInfo[pid];
            pool.lastRewardBlock = _newStartBlock;
        }
        startBlock = _newStartBlock;

        emit UpdateStartBlock(startBlock);
    }
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"contract Knights","name":"_tokenAddress","type":"address"},{"internalType":"address","name":"_devaddr","type":"address"},{"internalType":"address","name":"_feeAddress","type":"address"},{"internalType":"uint256","name":"_KnightsPerBlock","type":"uint256"},{"internalType":"uint256","name":"_startBlock","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Deposit","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"EmergencyWithdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes","name":"reason","type":"bytes"}],"name":"KnightsMintError","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"}],"name":"SetDevAddress","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"newAddress","type":"address"}],"name":"SetFeeAddress","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"KnightsPerBlock","type":"uint256"}],"name":"UpdateEmissionRate","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"newStartBlock","type":"uint256"}],"name":"UpdateStartBlock","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdraw","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"address","name":"lpToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"allocPoint","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"depositFeeBP","type":"uint256"}],"name":"addPool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"pid","type":"uint256"},{"indexed":false,"internalType":"address","name":"lpToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"allocPoint","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"depositFeeBP","type":"uint256"}],"name":"setPool","type":"event"},{"inputs":[],"name":"KnightsPerBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_EMISSION_RATE","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"contract IERC20","name":"_lpToken","type":"address"},{"internalType":"uint16","name":"_depositFeeBP","type":"uint16"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"add","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"deposit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"devaddr","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"feeAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_from","type":"uint256"},{"internalType":"uint256","name":"_to","type":"uint256"}],"name":"getMultiplier","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"massUpdatePools","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"address","name":"_user","type":"address"}],"name":"pendingKnights","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"name":"poolExistence","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"poolInfo","outputs":[{"internalType":"contract IERC20","name":"lpToken","type":"address"},{"internalType":"uint256","name":"allocPoint","type":"uint256"},{"internalType":"uint256","name":"lastRewardBlock","type":"uint256"},{"internalType":"uint256","name":"accKnightsPerShare","type":"uint256"},{"internalType":"uint16","name":"depositFeeBP","type":"uint16"},{"internalType":"uint256","name":"lpSupply","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolLength","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_allocPoint","type":"uint256"},{"internalType":"uint16","name":"_depositFeeBP","type":"uint16"},{"internalType":"bool","name":"_withUpdate","type":"bool"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_devaddr","type":"address"}],"name":"setDevAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeAddress","type":"address"}],"name":"setFeeAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startBlock","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract Knights","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalAllocPoint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_KnightsPerBlock","type":"uint256"}],"name":"updateEmissionRate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"}],"name":"updatePool","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newStartBlock","type":"uint256"}],"name":"updateStartBlock","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"address","name":"","type":"address"}],"name":"userInfo","outputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"rewardDebt","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_pid","type":"uint256"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000c6ac08cb7786d87fc75d82a3baf0006c8acd221a0000000000000000000000006eef897317ccb5545895fa615707ea8b1de756250000000000000000000000004e20672ed3784add8254d5cf17946c0b4a5c6b780000000000000000000000000000000000000000000000000de0b6b3a764000000000000000000000000000000000000000000000000000000000000015d366f

-----Decoded View---------------
Arg [0] : _tokenAddress (address): 0xc6ac08cb7786d87fc75d82a3baf0006c8acd221a
Arg [1] : _devaddr (address): 0x6eef897317ccb5545895fa615707ea8b1de75625
Arg [2] : _feeAddress (address): 0x4e20672ed3784add8254d5cf17946c0b4a5c6b78
Arg [3] : _KnightsPerBlock (uint256): 1000000000000000000
Arg [4] : _startBlock (uint256): 22885999

-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 000000000000000000000000c6ac08cb7786d87fc75d82a3baf0006c8acd221a
Arg [1] : 0000000000000000000000006eef897317ccb5545895fa615707ea8b1de75625
Arg [2] : 0000000000000000000000004e20672ed3784add8254d5cf17946c0b4a5c6b78
Arg [3] : 0000000000000000000000000000000000000000000000000de0b6b3a7640000
Arg [4] : 00000000000000000000000000000000000000000000000000000000015d366f


Deployed ByteCode Sourcemap

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Swarm Source

ipfs://82ab7e21af4c2d75d61ba1a2cbe1db46518fb7f18a27ff3b1e931e3850810bd8
Block Transaction Gas Used Reward
Age Block Fee Address BC Fee Address Voting Power Jailed Incoming
Validator ID :
0 FTM

Amount Staked
0

Amount Delegated
0

Staking Total
0

Staking Start Epoch
0

Staking Start Time
0

Proof of Importance
0

Origination Score
0

Validation Score
0

Active
0

Online
0

Downtime
0 s
Address Amount claimed Rewards Created On Epoch Created On
Block Uncle Number Difficulty Gas Used Reward
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