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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka1 draw
3 Ka2 draw
4 Kb5 draw
5 Kb6 draw
6 Kc1 draw
7 Kc6 draw
8 Kd5 draw
9 Kd6 draw
10 Ra8 draw
11 Rc8 draw
12 Rd8 draw
13 Rh3 draw
14 Rh4 draw
15 Rh5 draw
16 Rh6 draw
17 Rh7 draw
18 Kb2 loss in 2 half-moves
19 Kb4 loss in 2 half-moves
20 Kc2 loss in 2 half-moves
21 Kc4 loss in 2 half-moves
22 Kd4 loss in 2 half-moves
23 Re8 loss in 2 half-moves
24 Rf8 loss in 2 half-moves
25 Rg8 loss in 2 half-moves
26 Rh1 loss in 2 half-moves
27 Rh2 loss in 2 half-moves