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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Kc7 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Ra7 win in 3 half-moves
5 Ra8 win in 9 half-moves
6 Kb7 draw
7 Kcb6 draw
8 Kd7 draw
9 Kd6 loss in 4 half-moves
10 Ka4 loss in 2 half-moves
11 Kab5 loss in 2 half-moves
12 Kab6 loss in 2 half-moves
13 Kb4 loss in 2 half-moves
14 Kcb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves