Berolina chess Berolina chess Berolina chess is a chess variant using a popular fairy chess piece called the Berolina pawn (also known as "Berlin pawn" or "Anti-pawn"). The Berolina pawn was invented by Edmund Nebermann in 1926 and has found frequent use in chess problems. Berolina chess follows the same rules as standard chess, including castling, except that all eight pawns are replaced by Berolina pawns. The Berolina pawn moves, without capturing, one square diagonally forward. It captures one square straight forward. (So, it is the converse of a standard chess pawn, which moves straight forward and captures diagonally forward.) Like a
Doubled pawns Doubled pawns In chess, doubled pawns are two pawns of the same color residing on the same file. Pawns can become doubled only when one pawn captures onto a file on which another friendly pawn resides. In the diagram, the pawns on the b-file and e-file are doubled. The pawns on the are doubled and isolated. In most cases, doubled pawns are considered a weakness due to their inability to defend each other. This inability, in turn, makes it more difficult to achieve a breakthrough which could create a passed pawn (often a deciding factor in endgames). In the case