Difficulty: ⭐⭐

Rules

All pieces are placed on the bottom two ranks. Giving check is forbidden. The first player whose king reaches the 8th rank wins. If White's king reaches the 8th, Black gets one move to equalize.

Start position

8/8/8/8/8/8/krbnNBRK/qrbnNBRQ w - - 0 1

PlayAll variants