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

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Kd5 win in 3 half-moves
3 Kd6 win in 7 half-moves
4 Rh7 win in 9 half-moves
5 Rh8 win in 13 half-moves
6 Kb5 draw
7 Kb6 draw
8 Kb7 draw
9 Kc7 draw
10 Kd7 draw
11 Kh4 draw
12 Kg4 loss in 2 half-moves
13 Kg5 loss in 2 half-moves
14 Kg6 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Re6 loss in 2 half-moves
17 Rf6 loss in 2 half-moves
18 Rg6 loss in 2 half-moves