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 Kb3 draw
3 Kb4 draw
4 Kb5 draw
5 Kc3 draw
6 Kc5 draw
7 Kcd3 draw
8 Kcd4 draw
9 Kcd5 draw
10 Ke3 draw
11 Ke5 draw
12 Ked3 draw
13 Ked4 draw
14 Ked5 draw
15 Ra8 draw
16 Rc8 draw
17 Rd8 draw
18 Re6 draw
19 Re7 draw
20 Kf3 loss in 2 half-moves
21 Kf4 loss in 2 half-moves
22 Kf5 loss in 2 half-moves
23 Re5 loss in 2 half-moves
24 Rf8 loss in 2 half-moves
25 Rg8 loss in 2 half-moves
26 Rh8 loss in 2 half-moves