Your Complete Online Chess Board, Coach, and Trainer

It runs Stockfish, one of the strongest chess engines in the world, and offers eight skill levels from a gentle beginner to near-master strength, so every player can find a fair challenge.

Each tier shows an estimated rating, so the honest way to choose is to play one game at a level you expect to lose and read the accuracy score afterwards rather than the result. A level where you lose but hold accuracy above the engine for the first fifteen moves is the one you learn from; a level where you are lost by move ten teaches nothing except that it was too high. The range runs from a gentle beginner to near-master, so there is room to move up a rung at a time without the jump being brutal.

How close your moves came to the engine's choice, position by position — not how well you played by feel. That distinction matters: a quiet position where every reasonable move is roughly as good will score high almost regardless of what you do, while one sharp position with a single winning line can cost several points from one slip. So read the tags rather than the number. A blunder marked at move 23 is a concrete thing to look at; a percentage two points below last game usually means the positions were sharper, not that you played worse.

Puzzles are drawn from the public-domain Lichess puzzle database, curated across difficulty levels and themes such as forks, pins and checkmates.

Yes. Paste or upload a PGN file to analyze any game, export your games as PGN, copy a FEN position, or share a game as a link or a board image.

Chess960, also called Fischer Random, shuffles the back-rank pieces into one of 960 starting positions, reducing opening memorization. This tool supports all of them, including correct castling.

Turn on “By voice” before the game or press the microphone in the right-hand panel and say your moves in ordinary words: “knight f three”, “e2 e4”, “c takes d five”, “castle”. The move is not guessed from the sound — it is chosen from the moves that are legal in this position, so slurred words and filler do not break it; when several moves fit what you said, the tool lists them and asks which one you meant, so it cannot play the wrong move. The commands “hint”, “take back”, “position” and “repeat” run the game hands-free. Speech recognition exists in Chrome, Edge and Yandex Browser; Firefox and Safari have none, so the voice panel simply will not appear there and the board still works with mouse and keyboard.