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 Ka5 draw
3 Kb5 draw
4 Rb3 draw
5 Rb4 draw
6 Rb5 draw
7 Rb6 draw
8 Rb7 draw
9 Rd2 draw
10 Rg2 draw
11 Rh2 draw
12 Ka7 loss in 2 half-moves
13 Kb6 loss in 2 half-moves
14 Kb7 loss in 2 half-moves
15 Kf6 loss in 2 half-moves
16 Kf7 loss in 2 half-moves
17 Kf8 loss in 2 half-moves
18 Kg6 loss in 2 half-moves
19 Kg8 loss in 2 half-moves
20 Kh6 loss in 2 half-moves
21 Kh7 loss in 2 half-moves
22 Kh8 loss in 2 half-moves
23 Ra2 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rc2 loss in 2 half-moves
26 Re2 loss in 2 half-moves
27 Rf2 loss in 2 half-moves