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 Kd8 win in 5 half-moves
3 Kd7 win in 11 half-moves
4 Ka8 draw
5 Kc7 draw
6 Kc8 draw
7 Ke7 draw
8 Kf7 draw
9 Kf8 draw
10 Ra1 draw
11 Ra2 draw
12 Ra8 draw
13 Ka6 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Ra5 loss in 2 half-moves
19 Ra6 loss in 2 half-moves