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

EGTB: win in 4 half-moves

# move score
1 Ka5 win in 3 half-moves
2 Ka6 win in 3 half-moves
3 Kbc6 win in 3 half-moves
4 Kc5 win in 5 half-moves
5 Kb5 win in 9 half-moves
6 Kd7 win in 17 half-moves
7 Ka7 draw
8 Ra7 draw
9 Kb8 loss in 2 half-moves
10 Kc8 loss in 2 half-moves
11 Kcc6 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Kd8 loss in 2 half-moves
14 Rb8 loss in 2 half-moves