Object: Checkmate the opponent's King.
 
All standard chess rules apply.
 
In Fortress Chess the starting positions, of which there are 20 variants, have no pieces on the a-file and h-file. The rooks are on b1, g1, b8, g8.
In castling the kings and rooks end up on the same places as in standard chess.
 
The idea behind Fortress Chess is to give the kings no safe corner to hide and by that make the game more aggressive.
 
 
More freeware as well as real puzzles and games under http://karl.kiwi.gen.nz.