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 Kb5 draw
3 Kb6 draw
4 Kc7 draw
5 Kcc6 draw
6 Kcd5 draw
7 Kd7 draw
8 Kdc6 draw
9 Kdd5 draw
10 Ke5 draw
11 Ke6 draw
12 Ke7 draw
13 Ra8 draw
14 Rc8 draw
15 Rd8 draw
16 Rh3 draw
17 Rh4 draw
18 Rh5 draw
19 Rh6 draw
20 Rh7 draw
21 Kb4 loss in 2 half-moves
22 Kc4 loss in 2 half-moves
23 Kd4 loss in 2 half-moves
24 Re8 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh1 loss in 2 half-moves
28 Rh2 loss in 2 half-moves