To play Minesweeper Duel, use the left mouse button to open a cell and the right mouse button to flag suspected mines on a PC; on mobile, tap to open and long-press to flag. Select a field size (Newbie, Amateur, or Professional) and match speed (Bullet, Blitz, or Classic) from the menu. Alternate turns with your opponent, aiming to score the highest points by revealing safe cells while avoiding mines. Strategize to open free zones for bonus points and outsmart your rival. The game supports fullscreen mode and is playable on browsers or mobile devices via the CrazyGames app. Plan moves carefully to maximize points and avoid instant loss.