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