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

EGTB: win in 4 half-moves

# move score
1 Khg3 win in 3 half-moves
2 Khg5 win in 3 half-moves
3 Rf5 win in 3 half-moves
4 Kf3 win in 5 half-moves
5 Kf4 win in 7 half-moves
6 Khh3 win in 15 half-moves
7 Kf5 draw
8 Kgg3 draw
9 Kgg5 draw
10 Kgh3 draw
11 Ra5 draw
12 Re5 draw
13 Rg5 draw
14 Rh6 draw
15 Rh7 draw
16 Rh8 draw
17 Rb5 loss in 2 half-moves
18 Rc5 loss in 2 half-moves
19 Rd5 loss in 2 half-moves