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 Ka5 draw
5 Ka7 draw
6 Kb2 draw
7 Kb5 draw
8 Kb6 draw
9 Kb7 draw
10 Kc1 draw
11 Kc2 draw
12 Ra8 draw
13 Rc8 draw
14 Rd8 draw
15 Re4 draw
16 Re5 draw
17 Re6 draw
18 Re7 draw
19 Rf8 draw
20 Re1 loss in 2 half-moves
21 Re2 loss in 2 half-moves
22 Re3 loss in 2 half-moves
23 Rg8 loss in 2 half-moves
24 Rh8 loss in 2 half-moves