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

EGTB: win in 4 half-moves

# move score
1 Kd8 win in 3 half-moves
2 Kg7 win in 3 half-moves
3 Kh7 win in 3 half-moves
4 Kh8 win in 3 half-moves
5 Kgf7 draw
6 Rf2 draw
7 Kd7 loss in 2 half-moves
8 Ke7 loss in 2 half-moves
9 Kef7 loss in 2 half-moves
10 Rf1 loss in 2 half-moves
11 Rf3 loss in 2 half-moves
12 Rf4 loss in 2 half-moves
13 Rf5 loss in 2 half-moves
14 Rf6 loss in 2 half-moves
15 Rf7 loss in 2 half-moves