Gambit vs Driz's Doubles Chess

Gambit is chess — and five chess worlds beyond it. One clean board, every way to play. GAME TYPES • Classic Chess — full rules: castling, en passant, promotion, draws. • Fischer Random (Chess960) — randomized back rank with generalized castling. • Open Borders (Horde) — 36 pawns storm a full army. • Turnabout (Crazyhouse) — capture a piece, then drop it back as your own. • Siamese (Bughouse) — two boards, captured pieces feed your partner. • Star Trek Tri-D — three-dimensional chess across seven boards. WAYS TO PLAY • Computer — five difficulty levels, from a gentle start to a real fight. Moves are instant. • Pass-and-play — two players on one device. • Online — invite a friend with a link, or find a match automatically. Live clocks, resign and draw offers, and you can watch other live games. MORE • Eight board themes. • Post-game analysis — an evaluation graph and move-quality marks. • A library of famous games to replay. • Optional cross-device game history with "Sign in with Knomee." No account is required to play. Sign in only if you want your game history synced across devices.

Doubles Chess is four-player team chess: two teams of two, one board, and both teammates moving at the same time — secretly. Each player commands one half of the board (files a–d or e–h). Every turn, you and your partner each pick one move in secret; they execute simultaneously. You can see THAT your partner has locked something in — never what — until both moves hit the board at once. RULES BUILT FOR SIMULTANEITY • The first move submitted locks in; the second must make the combined turn legal • Escape check as a team: one saving move is enough, judged on the combined result • Two enemy pawns can double-step in one turn — double en passant is real • Pins are real: you play the board as you see it • Checkmate only when NO pair of moves saves the king — strictly harder than normal mate • Pieces that cross the center line change hands: gifting your partner a rook is a strategy PLAY IN SECONDS • Create a room, share the 4-letter code, friends join instantly • No accounts, no sign-ups — pick a name and play • Empty seat? Add a bot with engine-ranked moves • Disconnected? Reconnect and pick up exactly where you were • Resigning takes both teammates. A draw takes all four. Argue accordingly. Bring your favorite partner. Blame them later.