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

EGTB: win in 4 half-moves

# move score
1 Rh4 win in 3 half-moves
2 K5g6 draw
3 K5h6 draw
4 K7g6 draw
5 K7h6 draw
6 Kg5 draw
7 Kg7 draw
8 Kg8 draw
9 Kh4 draw
10 Kh8 draw
11 Ra3 draw
12 Kg4 loss in 2 half-moves
13 Rb3 loss in 2 half-moves
14 Rc3 loss in 2 half-moves
15 Rd3 loss in 2 half-moves
16 Re3 loss in 2 half-moves
17 Rf3 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rh1 loss in 2 half-moves
20 Rh2 loss in 2 half-moves