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

EGTB: win in 10 half-moves

# move score
1 Rb8 win in 9 half-moves
2 Kb2 win in 23 half-moves
3 Kc2 win in 23 half-moves
4 Kb1 draw
5 Kb8 draw
6 Kd1 draw
7 Kd2 draw
8 Kd8 draw
9 Ra1 draw
10 Kb7 loss in 2 half-moves
11 Kc7 loss in 2 half-moves
12 Kd7 loss in 2 half-moves
13 Ra2 loss in 2 half-moves
14 Ra3 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Ra7 loss in 2 half-moves