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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Rb6 draw
3 Kc5 loss in 22 half-moves
4 Kb3 loss in 10 half-moves
5 Kc3 loss in 10 half-moves
6 Kd4 loss in 10 half-moves
7 Kd5 loss in 10 half-moves
8 Rb4 loss in 10 half-moves
9 Rd7 loss in 10 half-moves
10 Kb5 loss in 8 half-moves
11 Kb4 loss in 6 half-moves
12 Ra7 loss in 6 half-moves
13 Rc7 loss in 6 half-moves
14 Kd3 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rb2 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Re7 loss in 2 half-moves
20 Rf7 loss in 2 half-moves
21 Rg7 loss in 2 half-moves
22 Rh7 loss in 1 half-moves