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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kc1 draw
5 Kc5 draw
6 Kc7 draw
7 Kd6 draw
8 Kd7 draw
9 Ra4 draw
10 Ra6 draw
11 Ka2 loss in 2 half-moves
12 Kb2 loss in 2 half-moves
13 Kc2 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Ra8 loss in 2 half-moves