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 Kc7 win in 3 half-moves
5 Kcd7 win in 3 half-moves
6 Ke7 win in 3 half-moves
7 Re7 win in 3 half-moves
8 Kc5 win in 7 half-moves
9 Kcd5 win in 7 half-moves
10 Kcd6 win in 7 half-moves
11 Ke5 win in 7 half-moves
12 Rc8 win in 7 half-moves
13 Rf8 win in 9 half-moves
14 Ra8 draw
15 Rg8 draw
16 Rh8 draw
17 Ked5 loss in 2 half-moves
18 Ked6 loss in 2 half-moves
19 Ked7 loss in 2 half-moves
20 Kf5 loss in 2 half-moves
21 Kf6 loss in 2 half-moves
22 Kf7 loss in 2 half-moves
23 Rb8 loss in 2 half-moves
24 Rd8 loss in 2 half-moves