In the game of Hourglas, the most rules of the usual chess game apply, but there is another board, a howerglas board, the Pawns are Berolina Pawns (and without the Berolina Pawn initial double step), i.e., they go diagonally and capture orthogonally.
In Hourglass Chess Pawns can only promote to a piece that was previously captured. The Centurion moves up to two squares in any direction (horizontal, vertical,diagonal) can't jump over pieces.
 
This game was invented by Uri Bruck as contribution to a 38 square contest which was held in 1997/1998.