Chess4D - Free 4D, 3D and 5D chess in your browser

Indiechess4d.net

Chess4D is a free browser chess site with three modes. 4D chess is played on a 4 × 4 × 2 × 2 hypercube board (64 squares) with legal-move markers, against a practice computer or a friend on the same device. 3D chess is standard 8 × 8 chess on a rotatable 3D board, played against Stockfish or two-player on one device. 5D chess is an independent, experimental time-travel variant with branching timelines for two players sharing one device. Step-by-step rules and guided lessons included. No download