Shifted Chess (H+V)
Chess variant whose board has been cut into quarters and connected not properly, but slipped by one square both horizontally and vertically. In the center of the board there is a hole, which acts as a wall, so pieces cannot move through it.
Otherwise the rules of chess apply, with the following differences:
The initial position is central symmetric (as opposed to mirror symmetric), so that both players have their king on the right side. The queen-side bishop and knight are swapped so that the two bishops move on different colours.
Robert J. Bell[ChVar.com]