Andernach chess is a chess variant in which a piece making a capture (except kings) changes colour.[1] For instance, if a white bishop on a2 were to capture a black knight on g8, the result would be a black bishop on g8. Non-capturing moves are played as in orthodox chess. If a pawn captures on eighth rank, it is promoted first and then changes colour.
The game was named after the German town of Andernach, which is the site of annual meetings of fairy chess enthusiasts. It was during the 1993 meeting there that Andernach chess was introduced with a chess problem composing tournament for Andernach problems.[citation needed] It has since become a popular variant in problem composition, though it has not yet become popular as a game-playing variant.