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 Kcd7 win in 3 half-moves
3 Ra8 win in 3 half-moves
4 Kb6 draw
5 Kc7 draw
6 Kcd6 draw
7 Kd8 draw
8 Ke6 draw
9 Ke8 draw
10 Ked6 draw
11 Ked7 draw
12 Kf6 draw
13 Kf7 draw
14 Kf8 draw
15 Ra1 draw
16 Ra7 draw
17 Kb5 loss in 2 half-moves
18 Kc5 loss in 2 half-moves
19 Kd5 loss in 2 half-moves
20 Ra2 loss in 2 half-moves
21 Ra3 loss in 2 half-moves
22 Ra4 loss in 2 half-moves
23 Ra5 loss in 2 half-moves
24 Rb6 loss in 2 half-moves