Amaurosis scacchistica is the failure of a chess player, during a chess

Chess

Chess is a two-player board game played on a chessboard, a square-checkered board with 64 squares arranged in an eight-by-eight grid. It is one of the world's most popular games, played by millions of people worldwide at home, in clubs, online, by correspondence, and in tournaments.Each player...

 game, to make a normally obvious good move or see a normally obvious danger. The term was coined by Dr. Siegbert Tarrasch

Siegbert Tarrasch

Siegbert Tarrasch was one of the strongest chess players and most influential chess teachers of the late 19th century and early 20th century....

. Similar to chess blindness is the Kotov syndrome, in which a player, after a long period of calculation, suddenly makes a move they have not analyzed at all.