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

EGTB: win in 4 half-moves

# move score
1 Ra7 win in 3 half-moves
2 Ka7 win in 5 half-moves
3 Kd7 win in 5 half-moves
4 Kd8 win in 5 half-moves
5 Ke7 win in 7 half-moves
6 Ka5 win in 11 half-moves
7 Kf8 win in 11 half-moves
8 Kb5 draw
9 Kb6 draw
10 Kb7 draw
11 Kf7 draw
12 Rb8 loss in 2 half-moves
13 Rc8 loss in 2 half-moves
14 Rd8 loss in 2 half-moves