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

EGTB: win in 4 half-moves

# move score
1 Kb7 win in 3 half-moves
2 Kb8 win in 3 half-moves
3 Kc7 win in 5 half-moves
4 Kcd7 draw
5 Kcd8 draw
6 Ke7 draw
7 Ked7 draw
8 Ked8 draw
9 Kf7 draw
10 Kf8 draw
11 Ra5 draw
12 Ra7 draw
13 Ra1 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Ra4 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Rb8 loss in 2 half-moves