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 Kb7 draw
3 Kb8 draw
4 Kcc8 draw
5 Kcd8 draw
6 Kdc8 draw
7 Kdd8 draw
8 Ke7 draw
9 Ke8 draw
10 Ra8 draw
11 Rc8 draw
12 Rd8 draw
13 Rf8 draw
14 Rg8 draw
15 Rh1 draw
16 Rh6 draw
17 Rh7 draw
18 Kb6 loss in 2 half-moves
19 Kcc6 loss in 2 half-moves
20 Kcd6 loss in 2 half-moves
21 Kdc6 loss in 2 half-moves
22 Kdd6 loss in 2 half-moves
23 Ke6 loss in 2 half-moves
24 Re8 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