4 ms·

I remember reading about a serious tournament game where somebody castled twice. Nobody noticed during the game. I wonder how many computer databases allow that

I remember reading about a serious tournament game where somebody castled twice. Nobody noticed during the game. I wonder how many computer databases allow that game to be entered.

Someone 4y ago
That must have been Heidenfeld - Kerins, Dublin 1973. https://www.chessgames.com/perl/chessgame?gid=2024861 https://www.chessgames.com/perl/chessgame?gid=2024861. White castled short on move 10 and long on move 33. That didn’t help, though. White lost the game. Also, it seems that site’s software doesn’t allow entering the full game.