Quantum Chess960

Chess variant · 2026 · Solo project

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.

Play in your browserTwo players on one screen. The computer opponent and puzzles are coming to the browser version later.

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