previousHolder

currentHolder

FlagCaptured

captureTheFlag

/**
 * SPDX-License-Identifier:MIT
 */
// created by BraverElliot.eth (send me your money)
 
pragma solidity ^0.8.7;

contract CaptureTheFlag {

    event FlagCaptured(address previousHolder, address currentHolder);

    address public currentHolder = address(0);

    function captureTheFlag() external {
        address previousHolder = currentHolder;

        currentHolder = msg.sender;

        emit FlagCaptured(previousHolder, currentHolder);
    }
}


Make sure your address is always the current holder.

This is a fun game I made at 1 am.