Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rb4 draw
3 Rb5 draw
4 Rb7 draw
5 Rb8 draw
6 Rc3 draw
7 Rd3 draw
8 Re3 draw
9 Rf3 draw
10 Kb7 loss in 2 half-moves
11 Kb8 loss in 2 half-moves
12 Kc6 loss in 2 half-moves
13 Kcc7 loss in 2 half-moves
14 Kcd8 loss in 2 half-moves
15 Kd6 loss in 2 half-moves
16 Kdc7 loss in 2 half-moves
17 Kdd8 loss in 2 half-moves
18 Ke6 loss in 2 half-moves
19 Ke7 loss in 2 half-moves
20 Ke8 loss in 2 half-moves
21 Ra3 loss in 2 half-moves
22 Rb1 loss in 2 half-moves
23 Rb2 loss in 2 half-moves
24 Rg3 loss in 2 half-moves
25 Rh3 loss in 2 half-moves