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 Kf4 win in 3 half-moves
4 Kf5 win in 3 half-moves
5 Kf6 win in 3 half-moves
6 Rf5 win in 3 half-moves
7 Ke4 win in 7 half-moves
8 Kc6 draw
9 Kcd5 draw
10 Kcd6 draw
11 Ke6 draw
12 Ked5 draw
13 Ked6 draw
14 Rg3 draw
15 Rh5 draw
16 Kb4 loss in 2 half-moves
17 Kc4 loss in 2 half-moves
18 Kcd4 loss in 2 half-moves
19 Ked4 loss in 2 half-moves
20 Rg1 loss in 2 half-moves
21 Rg2 loss in 2 half-moves
22 Rg4 loss in 2 half-moves
23 Rg6 loss in 2 half-moves
24 Rg7 loss in 2 half-moves
25 Rg8 loss in 2 half-moves