Click on the third or sixth rank to set the en passant target square.

EGTB: win in 2 half-moves

# move score
1 K6b7 win in 1 half-moves
2 K8b7 win in 1 half-moves
3 Kb6 win in 1 half-moves
4 Kb8 win in 1 half-moves
5 K6a7 loss in 2 half-moves
6 K8a7 loss in 2 half-moves
7 Ka5 loss in 2 half-moves
8 Kb5 loss in 2 half-moves