Find the best move and write it over the board in algebraic notation (Nf3, exd5, O-O, e8Q). Keep trying until you find it.

Every legal move has a score from 0 to 100, from a chess engine. Your score for a puzzle is the score of the worst move you tried, so the best move on the first try scores 100, and a bad guess costs you even if you find the best move later.

Some puzzles take two moves: after your first move the opponent replies, and you find the next one too.

Scores are kept in this browser. Puzzles from the Lichess puzzle database (CC0), easiest first.