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. By default move orders are strict — flip the toggle to group by position and pull in transpositions.

⚖ Strict move orders

1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Nf6 5. dxe4 Nxe4 ◀ Undo move

Book continuations win% from 1.5M rated games

Nf3 3 Qe2 2

Matching openings 5

King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit C32 1 ply deeper
King's Gambit Declined: Falkbeer Countergambit, Charousek Gambit, Main Line C32 4 plies deeper
King's Gambit Declined: Falkbeer Countergambit, Charousek Variation C32 5 plies deeper
King's Gambit Declined: Falkbeer Countergambit, Tarrasch Variation C32 6 plies deeper
King's Gambit Declined: Falkbeer Countergambit, Alapin Variation C32 7 plies deeper

3810 catalogued lines in total · openings encyclopedia