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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Rb5 win in 1 half-moves
3 Rb6 win in 1 half-moves
4 Kb1 loss in 2 half-moves
5 Kb3 loss in 2 half-moves
6 Ka1 loss in 1 half-moves
7 Ka3 loss in 1 half-moves
8 Kf4 loss in 1 half-moves
9 Kf5 loss in 1 half-moves
10 Kf6 loss in 1 half-moves
11 Kg4 loss in 1 half-moves
12 Kg6 loss in 1 half-moves
13 Kh4 loss in 1 half-moves
14 Kh5 loss in 1 half-moves
15 Kh6 loss in 1 half-moves
16 Rb1 loss in 1 half-moves
17 Rb3 loss in 1 half-moves
18 Rb7 loss in 1 half-moves
19 Rb8 loss in 1 half-moves
20 Rc2 loss in 1 half-moves
21 Rd2 loss in 1 half-moves
22 Re2 loss in 1 half-moves
23 Rf2 loss in 1 half-moves
24 Rg2 loss in 1 half-moves
25 Rh2 loss in 1 half-moves