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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 Kf6 win in 7 half-moves
4 Kg4 win in 9 half-moves
5 Ka3 draw
6 Ke4 draw
7 Kf4 draw
8 Kg5 draw
9 Kg6 draw
10 Ka5 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Ke5 loss in 2 half-moves
13 Ke6 loss in 2 half-moves