CheckMate is a premium chess platform where serious players come to improve, compete, and enjoy the game at its fullest.
CheckMate is a fully-featured online chess platform. Whether you want to sharpen your tactical vision with daily puzzles, battle a challenging AI, or play real-time chess with a friend anywhere in the world — this is your board.
Every rule of chess is enforced precisely: castling, en passant, pawn promotion, stalemate, and check detection. The AI uses a real minimax engine with alpha-beta pruning and piece-square tables — not random moves.
The board loads instantly. Moves are validated locally. No lag between you and the position.
Sign in once with Google and your account, rating, and history persist forever. No passwords to forget.
Online games sync in real time using Firebase. Your opponent's moves appear instantly — no polling, no refresh.
Puzzles, analysis tools, and game history are all designed to help you become a better chess player.
Built with web standards — no heavy frameworks, no build steps, runs anywhere.
CheckMate was built as a passion project by a developer who loves chess and clean code. The goal: a chess platform that feels premium, runs fast, and actually works — rules, AI, multiplayer and all.
If you find a bug, want to suggest a feature, or just want to say hi — reach out.