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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Ka5 win in 9 half-moves
3 Kc8 win in 13 half-moves
4 Kd7 win in 15 half-moves
5 Ra7 win in 15 half-moves
6 Ke7 win in 17 half-moves
7 Kb4 win in 21 half-moves
8 Rb8 win in 21 half-moves
9 Kb5 win in 25 half-moves
10 Ka3 draw
11 Kb3 draw
12 Ke8 draw
13 Ra5 draw
14 Ra6 draw
15 Rc8 draw