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

EGTB: win in 4 half-moves

# move score
1 Rh6 win in 3 half-moves
2 Khg4 win in 7 half-moves
3 Khg6 win in 7 half-moves
4 Kf6 draw
5 Kgg4 draw
6 Kgg6 draw
7 Kgh4 draw
8 Kgh6 draw
9 Khh4 draw
10 Khh6 draw
11 Ra8 draw
12 Rf8 draw
13 Rg8 draw
14 Rh7 draw
15 Kf4 loss in 2 half-moves
16 Kf5 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