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