Hits per page
This option sets the maximum number of games on one screen, returned after each search. If more games are returned, they will still be accessible via 'next' and 'prev' buttons. The 'next' and 'prev' buttons will appear only if there are more games in the returned result set than 'Hits per page'.
With checking castling
When checked, this option will force a search of only those positions where castling information agrees with the position found on the Chess Board. Such agreement may be an inaccurate predictor of castling privileges. Therefore, you should usually leave this option unchecked by default.
With checking en-passant captures
When checked, this option will search only those positions, where en-passant captures (if any) correspond to those found on the Chess Board (default - checked).
Full scan for a player name
This option is intended for searching the games given the partial player names. When checked, you will find "Kasparov, Gary ." even if you entered only "par'. When non-checked, you will find only the beginning of the name: "Kasparov, Gary " if entered "Kas". Non checked mode results in a faster search (default - non-checked). NOTE: if you select the Full scan, to avoid longer searches or timeouts please specify a full 4-digit year.