Nalimov's tablebases online

The links to the tablebases web interfaces:

• CHESSOK http://chessok.com/?page_id=361
• Knowledge4IT http://www.k4it.de/index.php?topic=egtb&lang=en
• Shredder http://www.shredderchess.com/online-chess/online-databases/endgame-database.html

An explanation of tablebases:

• http://horizonchess.com/FAQ/Winboard/egtb.html