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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Kb1 win in 5 half-moves
3 Kb4 win in 5 half-moves
4 Kb5 win in 5 half-moves
5 Kc4 win in 5 half-moves
6 Ra5 win in 5 half-moves
7 Kd4 win in 9 half-moves
8 Kd1 win in 11 half-moves
9 Kd5 win in 11 half-moves
10 Kb6 draw
11 Kc6 draw
12 Kd6 draw
13 Ra7 draw
14 Kb2 loss in 2 half-moves
15 Kc2 loss in 2 half-moves
16 Kd2 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Ra4 loss in 2 half-moves
20 Ra6 loss in 2 half-moves
21 Ra8 loss in 2 half-moves