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. b4 ◀ Undo move

♞ You have reached Polish Opening A00 — the catalogued line ends exactly here.

Book continuations win% from 1.5M rated games

d5 6 46% · 1k e5 5 46% · 2k e6 4 46% · 647 Nf6 3 50% · 635 c6 3 52% · 320 Nc6 1 Nh6 1 b5 1 c5 1 f5 1

Matching openings 27

Polish Opening: Birmingham Gambit A00 1 ply deeper
Polish Opening: Dutch Defense A00 1 ply deeper
Polish Opening: Grigorian Variation A00 1 ply deeper
Polish Opening: Karniewski Variation A00 1 ply deeper
Polish Opening: Outflank Variation A00 1 ply deeper
Polish Opening: Symmetrical Variation A00 1 ply deeper
Polish Opening, with d5 A00 1 ply deeper
Polish Opening: Bugayev Attack A00 2 plies deeper
Zukertort Opening: Santasiere's Folly A06 2 plies deeper
Polish Opening: Baltic Defense A00 3 plies deeper
Polish Opening: Czech Defense A00 3 plies deeper
Polish Opening: German Defense A00 3 plies deeper

…and 15 more lines run through this position — keep making moves to narrow it down.

3810 catalogued lines in total · openings encyclopedia