Petrov's Defense

Free, unlimited analysis for every Petrov's Defense game you play on Chess.com or Lichess. Our opening book holds 423 catalogued positions for this family under ECO C42–C43.

Analyse your own Petrov's Defense games, free

Enter your Chess.com or Lichess username and Lumichess will pull your games and grade every move with Stockfish 18. There is no daily limit and no account required. Book moves are flagged as theory, so you can see the exact move you left Petrov's Defense preparation and what the engine preferred instead.

Across a batch of games, the Profile Report scores your opening repertoire as one of six skills, benchmarked against players at your rating, so you can tell whether the Petrov's Defense is earning its place in your repertoire or quietly costing you points. Insights then shows your record with it by colour across your whole history.

Named variations of the Petrov's Defense

Our opening book catalogues 39 named variations in this family. Here they all are:

• Classical Attack
• Classical Attack, Berger Variation
• Classical Attack, Closed
• Classical Attack, Krause Variation
• Classical Attack, Krause, Maróczy Variation
• Classical Attack, Marshall Variation
• Classical Attack, Marshall Variation, Staunton Variation
• Classical Attack, Marshall Variation, Staunton, Chinese Gambit
• Classical Attack, Marshall Variation, Tarrasch Variation
• Classical Attack, Marshall Variation, Tarrasch, Marshall Trap
• Classical Attack, Mason Variation
• Classical Attack, Mason-Showalter Variation
• Classical Variation
• Classical, Cochrane Gambit
• Classical, Cochrane, Bishop Check Line
• Classical, Cochrane, Center Variation
• Classical, Cozio Attack
• Classical, Damiano Variation
• Classical, Damiano Variation, Kholmov Gambit
• Classical, French Attack
• Classical, Karklins-Martinovsky Variation
• Classical, Kaufmann Attack
• Classical, Millennium Attack
• Classical, Nimzowitsch Attack
• Classical, Paulsen Attack
• Classical, Stafford Gambit
• Classical, Urusov Gambit
• Moody Gambit
• Steinitz Attack
• Steinitz Attack, Bardeleben Variation
• Steinitz Attack, Center Attack
• Steinitz Attack, Symmetrical Variation
• Steinitz Attack, Symmetrical, Center Variation
• Steinitz Attack, Symmetrical, Center Variation, Murey Variation
• Steinitz Attack, Symmetrical, Center Variation, Trifunović Variation
• Steinitz Attack, Tal Gambit
• Three Knights Game
• Urusov Gambit
• Urusov, Lichtenhein Defense

More chess openings

Browse every opening family in our book from the chess openings index, or read how the Game Report grades a move.