Chess4D
Free 4D, 3D and 5D chess in your browser. No sign-up.
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StockfishChess4D is a free browser chess site with three modes. 4D chess is played on a 4 × 4 × 2 × 2 hypercube board (64 squares) with X, Y, Z and W axes and legal-move markers, against a practice computer or a friend on the same device. 3D chess is standard 8 × 8 chess shown on a rotatable 3D board, played against Stockfish or two-player on one device, with move history and undo. 5D chess is an independent, experimental time-travel variant with branching timelines for two players sharing one device. Step-by-step rules and five guided 5D lessons are included. No download or account needed to play.
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