Caro-Kann traps: the most-played mistakes
4 mistakes actually played in the Caro-Kann, each verified by the engine: the position is playable before, the punishment wins material, and the player share comes from real Lichess games.
Method: Stockfish screening (depth 14 then 22), refutation = best engine moves. Frequencies: real Lichess games 1400-2200+, blitz, rapid and classical. Whatever failed verification is not published.
- Bg4 ?6.7% of players21,021 games
Bg4 fatally weakens your kingside: after Nxf6+ gxf6 Qxg4, you lose the bishop and your defence crumbles. Play Nxe4 instead to stay balanced.
Punishment: Nxf6+ gxf6 Qxg4 h5 Qe4
+3 points of material, evaluation 5.3 after the punishment.
- Be7 ?8.7% of players5,647 games
Be7 leaves your king fatally exposed. After Nxf7, you're forced into Qa5+ but then Bd2 traps your queen and wins material: you're crushed.
Punishment: Nxf7 Qa5+ Bd2 Qb6 Nxh8
+6 points of material, evaluation 4.7 after the punishment.
- O-O ?14.8% of players3,559 games
Castling leaves e6 undefended. After Nxe6 Bb4+ c3 Bxc3+, you lose your bishop and fall behind in development: White takes over completely.
Punishment: Nxe6 Bb4+ c3 Bxc3+ bxc3
+3 points of material, evaluation 2.5 after the punishment.
- Nb4 ?5.8% of players1,405 games
Nb4 weakens your position after Qa4+. You're forced into Bd7, then Qxb4 simply wins your knight since b5 offers no defense. Play Ne5 instead to centralize your knight and stay equal.
Punishment: Qa4+ Bd7 Qxb4 b5 a4
+3 points of material, evaluation 3.1 after the punishment.