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 Ka6 draw
3 Ka8 draw
4 Kab6 draw
5 Kab7 draw
6 Kb5 draw
7 Kb8 draw
8 Kc5 draw
9 Kc7 draw
10 Kcb6 draw
11 Kcb7 draw
12 Ra3 draw
13 Rb1 draw
14 Rb2 draw
15 Rb6 draw
16 Rb7 draw
17 Rc3 draw
18 Rd3 draw
19 Rh3 draw
20 Kd5 loss in 2 half-moves
21 Kd6 loss in 2 half-moves
22 Kd7 loss in 2 half-moves
23 Rb4 loss in 2 half-moves
24 Rb5 loss in 2 half-moves
25 Re3 loss in 2 half-moves
26 Rf3 loss in 2 half-moves
27 Rg3 loss in 2 half-moves