Petrov's Defense (페트로프 방어)

한국어

The Petrov's Defense family holds 50 lines. The boards below follow its shortest line from the first move.

The Korean name in brackets is ours, not an official translation. The original name is English.

Main line

1. e4 e5 2. Nf3 Nf6

One move per board, left to right. The two outlined squares are the move just played.

1. e4
1… e5
2. Nf3
2… Nf6

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Petrov's Defense (C42)

1. e4 e5 2. Nf3 Nf6

Tap a piece and then the square it goes to. When the move matches the data, the reply follows on its own.

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Variations in this family

Ordered by ECO code. A blank label means the entry carries the family name alone.

  1. C42Petrov's Defense4 movesPlay this line

    1. e4 e5 2. Nf3 Nf6

  2. C42Petrov's Defense5 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5

  3. C42Italian Variation5 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Bc4

  4. C42Three Knights Game5 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nc3

  5. C42Petrov's Defense6 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6

  6. C42Damiano Variation6 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4

  7. C42Stafford Gambit6 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6

  8. C42Petrov's Defense7 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3

  9. C42Cochrane Gambit7 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7

  10. C42Karklins-Martinovsky Variation7 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nd3

  11. C42Moody Gambit7 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Qe2 Nc6 4. d4

  12. C42Paulsen Attack7 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nc4

  13. C42Petrov's Defense8 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4

  14. C42Damiano Variation, Kholmov Gambit8 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 Qe7

  15. C42Stafford Gambit Accepted8 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6

  16. C42Classical Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4

  17. C42Cochrane Gambit, Bishop Check Line9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. Bc4+

  18. C42Cochrane Gambit, Center Variation9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 Kxf7 5. d4

  19. C42Cozio Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2

  20. C42French Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d3

  21. C42Kaufmann Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. c4

  22. C42Millennium Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Bd3

  23. C42Nimzowitsch Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3

  24. C42Classical Attack, Closed Variation10 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 Nf6

  25. C42Stafford Gambit Accepted10 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. Nc3 Bc5

  26. C42Stafford Gambit Accepted10 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. d3 Bc5

  27. C42Classical Attack, Marshall Variation12 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6

  28. C42Classical Attack, Mason-Showalter Variation12 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6

  29. C42Classical Attack, Mason Variation14 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O O-O

  30. C42Classical Attack, Chigorin Variation15 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1

  31. C42Classical Attack, Jaenisch Variation15 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4

  32. C42Classical Attack, Staunton Variation16 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6

  33. C42Classical Attack, Tarrasch Variation16 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 Bg4

  34. C42Classical Attack, Chigorin Variation, Browne Attack17 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 Nb4 9. cxd5

  35. C42Classical Attack, Chigorin Variation, Main Line17 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. c4 Nb4 9. Be2

  36. C42Classical Attack, Marshall Variation, Chinese Gambit18 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Re1 Bg4

  37. C42Classical Attack, Berger Variation19 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. Nbd2

  38. C42Classical Attack, Krause Variation19 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. O-O Be7 8. Re1 Bg4 9. c3 f5 10. c4

  39. C42Classical Attack, Maróczy Variation20 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. Re1 Bg4 9. c3 f5 10. c4 Bh4

  40. C42Classical Attack, Marshall Trap20 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 Bg4 9. cxd5 f5 10. Re1 Bxh2+

  41. C43Modern Attack5 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4

  42. C43Modern Attack6 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 exd4

  43. C43Modern Attack, Symmetrical Variation6 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 d5

  44. C43Modern Attack, Center Variation7 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3

  45. C43Modern Attack, Murrey Variation8 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 Nc6

  46. C43Modern Attack, Center Attack9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4

  47. C43Modern Attack, Steinitz Variation9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2

  48. C43Modern Attack, Tal Gambit9 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Bb5

  49. C43Modern Attack, Bardeleben Variation12 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qe2 Nc5 6. Nxd4 Nc6

  50. C43Modern Attack, Trifunovic Variation14 movesPlay this line

    1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. O-O O-O 7. c4 Bxe5

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Data collected on 2026-09-07. The original is published as a public domain data set.