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

EGTB: win in 4 half-moves

# move score
1 Rh8 win in 3 half-moves
2 Ra1 draw
3 Rc1 draw
4 Rg1 draw
5 Rh3 draw
6 Rh6 draw
7 Kc7 loss in 2 half-moves
8 Kc8 loss in 2 half-moves
9 Kd7 loss in 2 half-moves
10 Ke7 loss in 2 half-moves
11 Ke8 loss in 2 half-moves
12 Rb1 loss in 2 half-moves
13 Rd1 loss in 2 half-moves
14 Re1 loss in 2 half-moves
15 Rf1 loss in 2 half-moves
16 Rh2 loss in 2 half-moves
17 Rh4 loss in 2 half-moves
18 Rh5 loss in 2 half-moves
19 Rh7 loss in 2 half-moves