Join the Chessperiment community and play unique chess variants online with friends or against our built-in Stockfish AI. Our platform lets you use custom boards and piece sets designed by creators from around the world. Whether you want to test new piece logic you just created, or play a match with standard rules on an irregular board — our smooth multiplayer experience has you covered. Start a private match by sharing a room code, or join the lobby to find other players. With real-time move validation and advanced engine analysis, Chessperiment provides a robust environment for both casual play and competitive testing of new game mechanics.
Challenge yourself by playing against the Stockfish AI. You can test your custom chess variants and see how a top-tier engine evaluates your new pieces.
Inviting Friends
Simply share your room code to start a match. No complex setup required – just send the link and start playing your variant immediately.
Fair Play & Logic
Our real-time engine ensures that all moves follow your custom defined logic. Fair play is maintained through server-side validation of every move.
Join matches across different time zones and enjoy lag-free chess with custom assets.