Opening explorer
Walk any move order through the catalog: pick a book continuation and watch the board, or open the matching ECO lines on the side. Move orders, not transpositions — exactly the paths over the board. Prefer the family trees? Every opening page has one.
1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5
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Book continuations
Matching openings 14
- Petrov's Defense: Classical Attack, Marshall Variation C42 2 plies deeper
- Petrov's Defense: Classical Attack, Mason-Showalter Variation C42 2 plies deeper
- Petrov's Defense: Classical Attack, Mason Variation C42 4 plies deeper
- Petrov's Defense: Classical Attack, Chigorin Variation C42 5 plies deeper
- Petrov's Defense: Classical Attack, Jaenisch Variation C42 5 plies deeper
- Petrov's Defense: Classical Attack, Staunton Variation C42 6 plies deeper
- Petrov's Defense: Classical Attack, Tarrasch Variation C42 6 plies deeper
- Petrov's Defense: Classical Attack, Chigorin Variation, Browne Attack C42 7 plies deeper
- Petrov's Defense: Classical Attack, Chigorin Variation, Main Line C42 7 plies deeper
- Petrov's Defense: Classical Attack, Marshall Variation, Chinese Gambit C42 8 plies deeper
- Petrov's Defense: Classical Attack, Berger Variation C42 9 plies deeper
- Petrov's Defense: Classical Attack, Krause Variation C42 9 plies deeper
…and 2 more lines run through this position — keep making moves to narrow it down.
3810 catalogued lines in total · openings encyclopedia