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

EGTB: win in 10 half-moves

# move score
1 Kb4 win in 9 half-moves
2 Kd7 draw
3 Kd8 draw
4 Ra1 draw
5 Ra2 draw
6 Ra6 draw
7 Ra7 draw
8 Ra8 draw
9 Kb3 loss in 2 half-moves
10 Kb5 loss in 2 half-moves
11 Kb7 loss in 2 half-moves
12 Kb8 loss in 2 half-moves
13 Kc3 loss in 2 half-moves
14 Kc5 loss in 2 half-moves
15 Kc7 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Kd3 loss in 1 half-moves
20 Kd4 loss in 1 half-moves
21 Kd5 loss in 1 half-moves