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

EGTB: win in 2 half-moves

# move score
1 Kb5 win in 1 half-moves
2 Kb7 win in 1 half-moves
3 Kc7 win in 1 half-moves
4 Kd7 win in 1 half-moves
5 Ra2 win in 1 half-moves
6 Ra3 win in 1 half-moves
7 Ra4 win in 1 half-moves
8 Rb6 draw
9 Kc5 loss in 2 half-moves
10 Kd5 loss in 2 half-moves
11 Kd6 loss in 2 half-moves
12 Ra1 loss in 2 half-moves
13 Ra5 loss in 2 half-moves
14 Ra7 loss in 2 half-moves
15 Ra8 loss in 2 half-moves
16 Kb6 loss in 1 half-moves