by Graham Banks

ChessOK2013-4.cgb
Compiled from drawn games between players rated 2600+ in the ChessOK database during the last three months of 2013.

http://kirill-kryukov.com/chess/discussion-board/download/file.php?id=30993

ChessOK2013HQ.cgb
Compiled from drawn games between players rated 2600+ in the ChessOK database during the whole of 2013.

http://kirill-kryukov.com/chess/discussion-board/download/file.php?id=30994