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 Kb2 draw
5 Kb6 draw
6 Kb7 draw
7 Kc1 draw
8 Kc2 draw
9 Kc5 draw
10 Kc7 draw
11 Kd5 draw
12 Kd6 draw
13 Kd7 draw
14 Ra8 draw
15 Rc8 draw
16 Rd8 draw
17 Re4 draw
18 Re5 draw
19 Re6 draw
20 Re7 draw
21 Kb5 loss in 2 half-moves
22 Re1 loss in 2 half-moves
23 Re2 loss in 2 half-moves
24 Re3 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves