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 Kb4 draw
6 Kb5 draw
7 Kc1 draw
8 Kc2 draw
9 Kc4 draw
10 Kc6 draw
11 Kd6 draw
12 Ra8 draw
13 Rc8 draw
14 Rd8 draw
15 Re1 draw
16 Re2 draw
17 Re6 draw
18 Re7 draw
19 Kb6 loss in 2 half-moves
20 Kd4 loss in 2 half-moves
21 Kd5 loss in 2 half-moves
22 Re3 loss in 2 half-moves
23 Re4 loss in 2 half-moves
24 Re5 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