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

EGTB: win in 4 half-moves

# move score
1 Rh7 win in 3 half-moves
2 Rd1 draw
3 Re1 draw
4 Rh5 draw
5 Rh6 draw
6 Rh8 draw
7 Kf7 loss in 2 half-moves
8 Kf8 loss in 2 half-moves
9 Kg7 loss in 2 half-moves
10 Kh7 loss in 2 half-moves
11 Kh8 loss in 2 half-moves
12 Ra1 loss in 2 half-moves
13 Rb1 loss in 2 half-moves
14 Rc1 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rg1 loss in 2 half-moves
17 Rh2 loss in 2 half-moves
18 Rh3 loss in 2 half-moves
19 Rh4 loss in 1 half-moves