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 Rb7 win in 3 half-moves
3 Kc4 win in 9 half-moves
4 Kc5 draw
5 Kd7 draw
6 Kdc6 draw
7 Kdd6 draw
8 Ke5 draw
9 Ke6 draw
10 Ra3 draw
11 Ra5 draw
12 Kb6 loss in 2 half-moves
13 Kb8 loss in 2 half-moves
14 Kc8 loss in 2 half-moves
15 Kcc6 loss in 2 half-moves
16 Kcd6 loss in 2 half-moves
17 Kd4 loss in 2 half-moves
18 Kd8 loss in 2 half-moves
19 Ke4 loss in 2 half-moves
20 Ra1 loss in 2 half-moves
21 Ra2 loss in 2 half-moves
22 Ra4 loss in 2 half-moves
23 Ra6 loss in 2 half-moves
24 Ra8 loss in 2 half-moves