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

EGTB: win in 4 half-moves

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