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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kb6 win in 3 half-moves
4 Rb4 win in 3 half-moves
5 Kc6 win in 5 half-moves
6 Kcd5 win in 5 half-moves
7 Kd6 win in 5 half-moves
8 Rc4 win in 5 half-moves
9 Ked4 win in 7 half-moves
10 Ra3 win in 9 half-moves
11 Kc4 draw
12 Kcd4 draw
13 Ra1 draw
14 Ra2 draw
15 Ra5 draw
16 Ra8 draw
17 Rd4 draw
18 Kd3 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Ke5 loss in 2 half-moves
21 Ked5 loss in 2 half-moves
22 Kf3 loss in 2 half-moves
23 Kf4 loss in 2 half-moves
24 Kf5 loss in 2 half-moves
25 Ra6 loss in 2 half-moves
26 Ra7 loss in 2 half-moves