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Use this tag for questions relating to the history of chess and chess organizations, whose origins trace to the ancient Indian game of Chaturanga.

6 votes
2 answers
7k views

What's the highest rating any computer has ever attained?

Along with that, I'd like to know what the highest rating of any human has ever been - including historical estimates.
Daniel's user avatar
  • 6,193
37 votes
3 answers
33k views

When and why was en passant invented?

Other than castling, the only "strange" move that chess pieces can ever make is en passant. It seems a little odd to me that someone thought that such a "different" move was so important to include i …
Daniel's user avatar
  • 6,193