Stockfish Top Choice Percentage
The Chess-DB.com "Stockfish First Line" metric shows how often (as a percentage) a chess player picks the top choice of Stockfish, one of the world's leading chess engines.
The metric is calculated over the last 100 games of the player, where:
- Blitz/Rapid events are skipped.
- The analysis of each game starts at move 12 (Thus opening moves that might just come out of theory are not evaluated).
- Moves where both the move played and the move suggested by the computer had an evaluation outside the interval [-2.00, 2.00], are discarded. (In clearly won positions players are tempted to play a simple safe move instead of a stronger, but risky one. Such "inferior" moves are, from a practical viewpoint, perfectly justified. Similarly, in lost positions players sometimes deliberately play an objectively worse move)
- The "Stockfish First Line" percentage is the total number of moves where the engine first choice was played by the player divided by the total numbers of evaluated moves for this player.