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 Ra3 draw
3 Ra5 draw
4 Ra6 draw
5 Ra7 draw
6 Rd8 draw
7 Re8 draw
8 Rf8 draw
9 Rg8 draw
10 Kf1 loss in 2 half-moves
11 Kf2 loss in 2 half-moves
12 Kf5 loss in 2 half-moves
13 Kf6 loss in 2 half-moves
14 Kf7 loss in 2 half-moves
15 Kg2 loss in 2 half-moves
16 Kg5 loss in 2 half-moves
17 Kg7 loss in 2 half-moves
18 Kh1 loss in 2 half-moves
19 Kh2 loss in 2 half-moves
20 Kh5 loss in 2 half-moves
21 Kh6 loss in 2 half-moves
22 Kh7 loss in 2 half-moves
23 Ra1 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Ra4 loss in 2 half-moves
26 Rb8 loss in 2 half-moves
27 Rc8 loss in 2 half-moves