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 Kb6 draw
4 Rb4 draw
5 Rb5 draw
6 Rb6 draw
7 Rb7 draw
8 Rc1 draw
9 Re1 draw
10 Rf1 draw
11 Rg1 draw
12 Ka8 loss in 2 half-moves
13 Kb7 loss in 2 half-moves
14 Kb8 loss in 2 half-moves
15 Ke7 loss in 2 half-moves
16 Ke8 loss in 2 half-moves
17 Kf7 loss in 2 half-moves
18 Kg7 loss in 2 half-moves
19 Kg8 loss in 2 half-moves
20 Ra1 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rd1 loss in 2 half-moves
24 Rh1 loss in 2 half-moves