ChessForm

Most chess tools analyze the game. They flag the blunder, score the accuracy, show the line the engine preferred — the position goes under the microscope. You don't.

ChessForm turns the lens around. It analyzes the player. Paste a PGN and, instead of a wall of centipawn numbers, you get a coach's read on how you actually think — the tactics you keep missing, where your plans drift, the kind of position that quietly gets the better of you, game after game.

And none of it is hand-waving. On Standard and Deep analysis, Stockfish 18 — one of the world's strongest chess engines — runs right in your browser, evaluating every move before the coaching starts: to depth 14 on Standard, depth 18 on Deep, where looking deeper means a more reliable read. From that pass it measures your accuracy, your centipawn loss move by move, every inaccuracy, mistake, and blunder, and the single moment the game turned. Those hard numbers are handed to the coach as ground truth — so the narrative you read is built on real engine evaluation, not guesswork.

And the portrait sharpens the more you play. Every game is saved, so once you've built up a handful, Big Picture synthesizes them into a profile of you as a player — your recurring blind spots, your strategic habits, the one change that would move the needle most. Not a verdict on a single game, but the long view of your chess that no move-by-move tool can offer.

Built for players who want to understand themselves at the board — not just be told they blundered on move 14.