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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Kb3 win in 5 half-moves
3 Kc3 win in 7 half-moves
4 Kb4 win in 11 half-moves
5 Kb5 win in 15 half-moves
6 Kd8 win in 17 half-moves
7 Kb8 draw
8 Kc5 draw
9 Kd3 draw
10 Kd4 draw
11 Kd5 draw
12 Ra4 draw
13 Ra6 draw
14 Kb7 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Kd7 loss in 2 half-moves
17 Ra1 loss in 2 half-moves
18 Ra2 loss in 2 half-moves
19 Ra3 loss in 2 half-moves
20 Ra5 loss in 2 half-moves
21 Ra7 loss in 2 half-moves