Carpalware
Chess variant · 2026 · Solo project

Quantum Chess960

Chess960 shuffles the back rank into one of 960 starting positions. Quantum Chess960 plays all of them at once: every move is applied to every possible board, and boards where the move is impossible are discarded. Move a piece like a knight, and you rule out every board where it wasn’t one.

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Quantum Chess960 starting board: each back-rank square displays its possible piece identities, while pawns have a single identity
The opening board, with possible piece identities shown on each back-rank square
Quantum Chess960 after several moves: knights have resolved to a single identity, while other pieces still show multiple possibilities
After a few moves, the possibilities have decreased