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

EGTB: draw

# move score
1 Kb5 draw
2 Kb6 draw
3 Kb8 draw
4 Kc7 draw
5 Kcb7 draw
6 Kd8 draw
7 Ka5 loss in 2 half-moves
8 Ka7 loss in 2 half-moves
9 Kab7 loss in 2 half-moves
10 Kd7 loss in 1 half-moves