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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Ka7 draw
3 Kb5 draw
4 Kb7 draw
5 Kb8 draw
6 Kc6 draw
7 Kd6 draw
8 Ra6 draw
9 Ra7 draw
10 Kb4 loss in 2 half-moves
11 Kc4 loss in 2 half-moves
12 Kd4 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves