Understand every move.
Improve every game.

Opening names come from game metadata. Score gives a draw half a point; win and loss percentages are shown separately. Small samples are visible but not called strengths or weaknesses.

The ranking uses a confidence-weighted score: each sample is shrunk toward your baseline for this color, so 2 wins from 2 games never outranks 60% over 100 games. At least 8 games are required.

These moves kept centipawn loss below 70 in analyzed middlegames. A forcing move is not automatically a sacrifice, fork or winning combination.

These are deterministic board features at move 20 when that position exists. They describe positions reached, not whether a move was good or bad.

Score and win rate are the final game result, not a claim that the endgame position was winning. A winning position means a Stockfish evaluation of at least +1.5 pawns for the player at that entry position. Conversion is shown only for that engine sample. Strength and weakness labels require at least 8 games.