Koch vs Gambit

Koch-Chess is a feature-rich chess app built for players of all levels. Play Your Way Challenge the built-in engine at 5 difficulty levels (D8 to D20), play online against friends, or sit back and watch engine vs engine battles unfold. Learn & Improve Explore 9 chess openings with guided lessons, including the Sicilian Defense, Italian Game, King's Indian, and more. Train & Practice Sharpen your skills with dedicated practice and training modes designed to build pattern recognition and tactical awareness. Clean, Fast Interface A distraction-free board with smooth controls, multiple themes, and a layout designed for mobile play. Features Solo play vs AI engine (5 depth levels) Online multiplayer with invite links Engine vs Engine watch mode 9 opening lessons with move guides Practice and training modes Multiple board themes Geo and Animal themed piece sets

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.