Chess opening
Petrov's Defense: Three Knights GameC42
The Petrov's Defense: Three Knights Game is a chess opening classified under ECO code C42. It is reached after the moves:
1. e4 e5 2. Nf3 Nf6 3. Nc3
Play it vs Stockfish Open in analysis board
Comes from
Main continuations
- Four Knights Game: Spanish Variation, Rubinstein Variation, Henneberger Variation (C48)
- Four Knights Game: Spanish Variation, Rubinstein Variation (C48)
- Four Knights Game: Spanish Variation, Gunsberg Counterattack (C49)
- Four Knights Game: Spanish Variation, Symmetrical Variation, Tarrasch Variation (C49)
Related lines in the Petrov's Defense
- Petrov's Defense (C42)
- Petrov's Defense (C42)
- Petrov's Defense (C42)
- Petrov's Defense (C42)
- Petrov's Defense (C42)
- Petrov's Defense: Classical Attack (C42)
- Petrov's Defense: Classical Attack, Berger Variation (C42)
- Petrov's Defense: Classical Attack, Chigorin Variation (C42)
Train this opening
LibreChess runs Stockfish in your browser — play the Petrov's Defense against the engine at any strength, get hints, and review your game move by move afterwards. Free, no account needed. You can also add this line to your repertoire and drill it with spaced repetition.