Standard chess with every rule: castling, en passant, promotion to any piece, check and checkmate. Games are drawn by stalemate, threefold repetition, the fifty-move rule or when neither side can possibly mate.
Tap a piece to see where it can go, then tap a square. You can undo at any time.
You only see your own pieces and the squares they could move to or attack. Everything else lies under mist.
- There is no check. Your king may walk into danger, and nobody will warn you.
- Capture the enemy king to win.
- Castling only needs empty squares between king and rook.
- En passant and promotion work as usual.
- The computer plays fair. It only knows what its own pieces can see.
Both players secretly choose a move, then both moves happen at the same moment. There is no check. Capture the enemy king to win.
- Nothing blocks mid-move. Moves are planned from the position at the start of the turn.
- Same square. If both pieces land on one square, the stronger one wins it. Equal pieces both fall.
- Swapping places. Two pieces moving into each other's squares meet halfway, and the stronger one continues.
- Missed captures. If the piece you aimed at moved away, your piece still lands but captures nothing.
- Strength. Pawn 1, knight 3, bishop 3, rook 5, queen 9, king strongest. A promoting pawn clashes as a pawn.
- Kings never trade. If both kings would meet, on one square or by swapping, both stay where they were and the turn passes.
- No en passant. A side with no move passes.
- If both kings fall on the same turn, it is a draw. So are fifty quiet turns, threefold repetition, bare kings or turn 200.