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

EGTB: win in 4 half-moves

# move score
1 Kfg6 win in 3 half-moves
2 Kg7 win in 3 half-moves
3 Rg8 win in 3 half-moves
4 Kfg5 win in 5 half-moves
5 Kf5 draw
6 Kf7 draw
7 Kg4 draw
8 Kh4 draw
9 Kh6 draw
10 Khg5 draw
11 Khg6 draw
12 Ra8 draw
13 Rh8 draw
14 Ke5 loss in 2 half-moves
15 Ke6 loss in 2 half-moves
16 Ke7 loss in 2 half-moves
17 Rb8 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rd8 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf7 loss in 2 half-moves