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Every rule
Castling, en passant, promotion, check, mate, stalemate and every draw rule — validated on the server.
Smash Chess
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Pieces that fight
Captures are a strike and a shatter; checkmate topples the losing king and blows it to rubble.
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Friend or bot
1v1 online with optional blitz clocks, or three bot levels from Pawn pusher to Grandmaster-ish.
Questions
Is Smash Chess free?
Yes. It runs in your browser with no download and no account needed while we're testing — play a bot instantly or create a room and send a friend the code.
Is it real chess?
Yes — every rule: castling, en passant, promotion (pick your piece), check, checkmate, stalemate, the 50-move rule, threefold repetition and insufficient material. Moves are validated on the server.
Can I play against the computer?
Yes. Alone in a room you play a bot: Pawn pusher (easy), Club player (normal) or Grandmaster-ish (hard). Pick your side or let it be random.
Are there clocks?
Optional: no clock, 3-minute blitz, 5 or 10 minutes, with a +2 s or +5 s increment. Run out and you lose on time.
Why do the pieces fight?
Because it's more fun. A capturing piece marches over, strikes, and the captured piece shatters into shards — checkmate ends with the losing king toppling and exploding.