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

EGTB: win in 4 half-moves

# move score
1 Kb6 win in 3 half-moves
2 Kb7 win in 5 half-moves
3 Kc3 win in 5 half-moves
4 Kc4 win in 5 half-moves
5 Rb8 win in 5 half-moves
6 Kc5 win in 7 half-moves
7 Kd5 win in 9 half-moves
8 Kd7 win in 9 half-moves
9 Ra6 win in 9 half-moves
10 Rc8 win in 9 half-moves
11 Rd8 win in 9 half-moves
12 Kb8 draw
13 Kc6 draw
14 Kc8 draw
15 Kd3 draw
16 Kd6 draw
17 Kd8 draw
18 Ra1 draw
19 Ra4 draw
20 Ra7 draw
21 Ke3 loss in 2 half-moves
22 Ke4 loss in 2 half-moves
23 Ke5 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Ra3 loss in 2 half-moves
26 Ra5 loss in 2 half-moves
27 Re8 loss in 2 half-moves
28 Rf8 loss in 2 half-moves
29 Rg8 loss in 2 half-moves
30 Rh8 loss in 2 half-moves