Home Learn Info Games More

Opening Data

More moves than you can shake a pawn at.

The game data you can download are in 5 segments A-E by ECO opening codes. Each segment is large, because they contain nearly all the significant games of the past.

You can determine which openings are contained in each ECO code by browsing the entire index for all segments in text or PGN format.

Openings by Segment

... the initial position is decisive Zugzwang.

Jon Speelman