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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Kf5 loss in 8 half-moves
3 Kh5 loss in 8 half-moves
4 Ra6 loss in 8 half-moves
5 Rc6 loss in 8 half-moves
6 Rb7 loss in 6 half-moves
7 Rb8 loss in 6 half-moves
8 Rg6 loss in 6 half-moves
9 Kf6 loss in 4 half-moves
10 Kg6 loss in 4 half-moves
11 Kh6 loss in 4 half-moves
12 Rb4 loss in 4 half-moves
13 Rb5 loss in 4 half-moves
14 Kf4 loss in 2 half-moves
15 Kg4 loss in 2 half-moves
16 Kh4 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rd6 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Rf6 loss in 2 half-moves
22 Rh6 loss in 2 half-moves