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

EGTB: win in 4 half-moves

# move score
1 Kab7 win in 3 half-moves
2 Ka6 draw
3 Kb8 draw
4 Kba7 draw
5 Kbb7 draw
6 Kc7 draw
7 Kaa7 loss in 2 half-moves
8 Kc6 loss in 2 half-moves
9 Ka5 loss in 1 half-moves
10 Kb5 loss in 1 half-moves
11 Kc5 loss in 1 half-moves