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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Ra5 win in 3 half-moves
3 Ra7 win in 3 half-moves
4 Rb3 win in 3 half-moves
5 Ra4 win in 5 half-moves
6 Ra6 win in 7 half-moves
7 Kb3 draw
8 Kb6 draw
9 Kb7 draw
10 Kc5 draw
11 Kc7 draw
12 Kd3 draw
13 Kd5 draw
14 Kd6 draw
15 Kd7 draw
16 Ra8 draw
17 Kb2 loss in 2 half-moves
18 Kb4 loss in 2 half-moves
19 Kc2 loss in 2 half-moves
20 Kc4 loss in 2 half-moves
21 Kd2 loss in 2 half-moves
22 Kd4 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Ra2 loss in 2 half-moves