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

EGTB: win in 4 half-moves

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