Welcome to the Chess Database!

This chess database (containing 37,000,000 chess positions out of 500,000 games and 700,000 computer analyses) annotates your chess game or position with reference games, sorted by strength of players. Within few moments, your annotated game or position is available for download.

+++ PGN Game Annotation +++

Submit your PGN chess game file (click on "Browse" or insert file name with full path informations). Limitations: Maximum file size is 64 kB (65536 Bytes). Only one game - the first - will be annotated.

Start annotation at move no.   of   White  Black

+++ EPD/FEN  Position Annotation +++

Insert a EPD/FEN position description and click on “Submit".

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