List such gamesTry the rulesChess variants on different lattice boards

Chess variant played on a big square-like board with diagonal square grid. The roles of the orthogonal and the diagonal directions are exchanged.

Otherwise the rules of chess apply, with the following differences:

• Pawns move forwards, in diagonal direction, and capture obliquely forwards on adjacent fields. They can make a double-move from their initial fields. If a pawn captures to the initial field of an other pawn of the same colour, it can still make a double-move from there.
• Castling works with the bishops instead of the rooks. Otherwise it works similarly as in chess, on the back diagonal, with the bishops in the corner.
• Pawns promote on the opposite side of the board, on the two back diagonals, i.e. on those fields where the opposing non-pawn pieces start.

Pawn's movement and promotion fields

Before and after castling

Notes

The bishop's and the rook's role has been reversed: the bishops can move in parallel to the sides of the board (which are diagonals of the grid), and the rooks can move obliquely (which are orthogonal directions in the grid). Therefore the rook and the bishop swap position in the beginning, and the bishop is involved in castling, not the rook. It is however still true that the bishops remain on the same field colour, while rooks do not have this restriction.

Inventor

Original version: unknown (see the link below); modified version: Uray M. János, 2017.

Similar variant

• Diagonal Oblong Chess

External link

• abstractstrategygames.blogspot.hu: Diagonal Chess