description Atomic Chess Overview
Atomic Chess is a tactical chess variant played primarily on online platforms. The defining mechanic is that capturing any piece triggers an explosion that immediately destroys both the capturing piece and the captured piece. Additionally, the blast removes any adjacent non-pawn pieces within a one-square radius, while pawns are immune to this explosive effect.
This rule drastically alters standard chess strategy, as kings cannot participate in captures and players must carefully navigate the board to avoid chain reactions that could open immediate lines to their own king.
insights Ranking position
Atomic Chess ranks #13 of 145 in the Chess Variant ranking, behind Seirawan Chess, ahead of Crazyhouse960.
help Atomic Chess FAQ
Why do pawns sometimes survive an explosion in Atomic Chess?
A capture removes both participating pieces and adjacent non-pawn pieces. Pawns on surrounding squares survive, although a pawn located on the capture square is still destroyed.
Can two kings stand next to each other in Atomic Chess?
On Lichess they can, because either king would explode itself by capturing the other. This unusual rule makes connected-king endgames very different from ordinary chess.
Do you have to checkmate the king to win Atomic Chess?
No, exploding the opposing king wins immediately, even if no conventional checkmate occurs. Traditional checkmate can also end the game when the king has no legal escape.
Where can I play Atomic Chess online with the explosion rules enforced?
Lichess offers Atomic as a built-in variant and automatically handles illegal king explosions. The Free Internet Chess Server has also supported an atomic ruleset for many years.
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