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

EGTB: win in 4 half-moves

# move score
1 Ra1 win in 3 half-moves
2 Ra4 win in 3 half-moves
3 Ka7 win in 5 half-moves
4 Kb5 win in 5 half-moves
5 Kb7 win in 5 half-moves
6 Kc5 win in 5 half-moves
7 Kc6 win in 5 half-moves
8 Kc7 win in 5 half-moves
9 Ra5 win in 5 half-moves
10 Ra7 win in 5 half-moves
11 Ra8 win in 5 half-moves
12 Ka5 loss in 4 half-moves
13 Ra2 loss in 2 half-moves
14 Ra3 loss in 2 half-moves