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 K7b7 draw
3 K7b8 draw
4 K8b7 draw
5 K8b8 draw
6 Ka6 draw
7 Kb6 draw
8 Ra3 draw
9 Rb1 draw
10 Rb2 draw
11 Rb7 draw
12 Rc3 draw
13 Rd3 draw
14 Rh3 draw
15 Rb4 loss in 2 half-moves
16 Rb5 loss in 2 half-moves
17 Rb6 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rg3 loss in 2 half-moves