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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Ka7 draw
3 Ka8 draw
4 Kbb8 draw
5 Kbc8 draw
6 Kcb8 draw
7 Kcc8 draw
8 Kd7 draw
9 Kd8 draw
10 Rb8 draw
11 Rc8 draw
12 Re8 draw
13 Rf8 draw
14 Rg8 draw
15 Rh1 draw
16 Rh6 draw
17 Rh7 draw
18 Ka6 loss in 2 half-moves
19 Kbb6 loss in 2 half-moves
20 Kbc6 loss in 2 half-moves
21 Kcb6 loss in 2 half-moves
22 Kcc6 loss in 2 half-moves
23 Kd6 loss in 2 half-moves
24 Rd8 loss in 2 half-moves
25 Rh2 loss in 2 half-moves
26 Rh3 loss in 2 half-moves
27 Rh4 loss in 2 half-moves
28 Rh5 loss in 2 half-moves