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

EGTB: win in 4 half-moves

# move score
1 K6b7 win in 3 half-moves
2 Kb6 win in 3 half-moves
3 Kb8 win in 3 half-moves
4 Rb8 win in 3 half-moves
5 Kb5 win in 9 half-moves
6 Kc5 win in 9 half-moves
7 Ra6 win in 11 half-moves
8 Ra1 draw
9 K6c7 loss in 2 half-moves
10 K6d7 loss in 2 half-moves
11 K8b7 loss in 2 half-moves
12 K8c7 loss in 2 half-moves
13 K8d7 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Kd6 loss in 2 half-moves
16 Kd8 loss in 2 half-moves
17 Ra2 loss in 2 half-moves
18 Ra3 loss in 2 half-moves
19 Ra4 loss in 2 half-moves
20 Ra5 loss in 2 half-moves
21 Ra7 loss in 2 half-moves