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

EGTB: win in 46 half-moves

# move score
1 K8b8 win in 45 half-moves
2 Ra7 loss in 4 half-moves
3 Rb1 loss in 4 half-moves
4 Rb2 loss in 4 half-moves
5 Rb3 loss in 4 half-moves
6 Rb4 loss in 4 half-moves
7 Rb5 loss in 4 half-moves
8 Rb8 loss in 4 half-moves
9 K7b8 loss in 2 half-moves
10 K7d7 loss in 2 half-moves
11 K7d8 loss in 2 half-moves
12 K8d7 loss in 2 half-moves
13 K8d8 loss in 2 half-moves
14 Kb6 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kd6 loss in 2 half-moves
17 Rb6 loss in 2 half-moves