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

EGTB: win in 4 half-moves

# move score
1 Ka2 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 Rb6 win in 3 half-moves
4 Kb2 win in 7 half-moves
5 Kb6 win in 9 half-moves
6 Ka4 win in 11 half-moves
7 Kd6 win in 13 half-moves
8 Kb3 draw
9 Kb5 loss in 2 half-moves
10 Kb7 loss in 2 half-moves
11 Kc5 loss in 2 half-moves
12 Kc7 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Kd7 loss in 2 half-moves
15 Ra4 loss in 2 half-moves
16 Ra5 loss in 2 half-moves
17 Ra7 loss in 2 half-moves
18 Ra8 loss in 2 half-moves