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 Rc8 loss in 8 half-moves
3 Rh7 loss in 8 half-moves
4 Kb6 loss in 6 half-moves
5 Kb7 loss in 6 half-moves
6 Kc7 loss in 6 half-moves
7 Kd6 loss in 6 half-moves
8 Kd7 loss in 6 half-moves
9 Rg8 loss in 6 half-moves
10 Rh5 loss in 4 half-moves
11 Rh6 loss in 4 half-moves
12 Kb5 loss in 2 half-moves
13 Kc5 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Ra8 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rh1 loss in 2 half-moves
21 Rh2 loss in 2 half-moves
22 Rh3 loss in 2 half-moves