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

EGTB: win in 4 half-moves

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