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. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 ◀ Undo move

Book continuations

Nf3 28

Matching openings 28

Semi-Slav Defense: Main Line D45 1 ply deeper
Semi-Slav Defense: Accelerated Meran Variation D45 2 plies deeper
Semi-Slav Defense: Normal Variation D45 2 plies deeper
Semi-Slav Defense: Stoltz Variation D45 3 plies deeper
Semi-Slav Defense: Main Line D46 3 plies deeper
Semi-Slav Defense: Bogoljubow Variation D46 4 plies deeper
Semi-Slav Defense: Chigorin Defense D46 4 plies deeper
Semi-Slav Defense: Romih Variation D46 4 plies deeper
Semi-Slav Defense: Stoltz Variation D45 5 plies deeper
Semi-Slav Defense: Chigorin Defense D46 5 plies deeper
Semi-Slav Defense: Semi-Meran Variation D47 5 plies deeper
Semi-Slav Defense: Stoltz Variation D45 6 plies deeper

…and 16 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia