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

EGTB: win in 2 half-moves

# move score
1 Rb5 win in 1 half-moves
2 Kb6 loss in 2 half-moves
3 Kb7 loss in 2 half-moves
4 Kb8 loss in 2 half-moves
5 Kc6 loss in 2 half-moves
6 Kc8 loss in 2 half-moves
7 Kd6 loss in 2 half-moves
8 Kd7 loss in 2 half-moves
9 Kd8 loss in 2 half-moves
10 Ra3 loss in 2 half-moves
11 Rb1 loss in 2 half-moves
12 Rb2 loss in 2 half-moves
13 Rb4 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rb7 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rd3 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Re3 loss in 1 half-moves
21 Rg3 loss in 1 half-moves
22 Rh3 loss in 1 half-moves