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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kb7 win in 3 half-moves
4 Rb7 win in 3 half-moves
5 Rd7 win in 3 half-moves
6 Ke8 win in 7 half-moves
7 Kf6 win in 7 half-moves
8 Kf8 win in 7 half-moves
9 Kg6 win in 7 half-moves
10 Rc7 win in 7 half-moves
11 Kg7 win in 9 half-moves
12 Kg8 win in 9 half-moves
13 Kd5 win in 11 half-moves
14 Kd6 win in 11 half-moves
15 Ke6 win in 11 half-moves
16 Kc5 win in 13 half-moves
17 Ke7 win in 13 half-moves
18 Ra8 win in 13 half-moves
19 Kc7 draw
20 Kd7 draw
21 Ra1 draw
22 Ra5 draw
23 Ra6 draw
24 Re7 draw
25 Ra2 loss in 2 half-moves
26 Ra3 loss in 2 half-moves
27 Ra4 loss in 2 half-moves