The Chess Matrix
Provides chess theory, opening reportaire, compositions, endgames, and more.

Orang Utan, Sokolsky, Polish
The only page on the Sokolsky (also known as Polish and Orang-Utan) chess opening. Information on tournaments, CAP data, games, history and even facts on the animal itself.

Norresundby Chess Club
54+ well-organized links. Chess diagram utilities, chess fonts, chess playing programs, chess games.