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

EGTB: win in 18 half-moves

# move score
1 Kb5 win in 17 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kc1 draw
5 Kc2 draw
6 Kc7 draw
7 Kd2 draw
8 Ke1 draw
9 Ke2 draw
10 Ra2 draw
11 Ra3 draw
12 Ra4 draw
13 Ra6 draw
14 Ra8 draw
15 Rb1 draw
16 Rc1 draw
17 Kc5 loss in 2 half-moves
18 Kd5 loss in 2 half-moves
19 Kd6 loss in 2 half-moves
20 Kd7 loss in 2 half-moves
21 Ra5 loss in 2 half-moves
22 Ra7 loss in 2 half-moves