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

EGTB: win in 4 half-moves

# move score
1 Kc3 win in 3 half-moves
2 Kc5 win in 3 half-moves
3 Kd5 win in 3 half-moves
4 Ke5 win in 3 half-moves
5 Ra5 win in 3 half-moves
6 Rc4 win in 3 half-moves
7 Kc4 win in 5 half-moves
8 Ra6 draw
9 Ra7 draw
10 Ra8 draw
11 Rb4 draw
12 Kd3 loss in 2 half-moves
13 Ke3 loss in 2 half-moves
14 Ke4 loss in 2 half-moves
15 Ra1 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Ra3 loss in 2 half-moves