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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ka5 draw
3 Kb6 draw
4 Kb7 draw
5 Ke8 draw
6 Kf7 draw
7 Kg7 draw
8 Kg8 draw
9 Ka7 loss in 6 half-moves
10 Ke7 loss in 2 half-moves