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

EGTB: win in 2 half-moves

# move score
1 Rf1 win in 1 half-moves
2 Rf2 win in 1 half-moves
3 Rf3 win in 1 half-moves
4 Kf6 loss in 8 half-moves
5 Kd6 loss in 2 half-moves
6 Kd7 loss in 2 half-moves
7 Kd8 loss in 2 half-moves
8 Ke6 loss in 2 half-moves
9 Ke8 loss in 2 half-moves
10 Kf8 loss in 2 half-moves
11 Rf4 loss in 2 half-moves
12 Rf5 loss in 2 half-moves
13 Rf6 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg7 loss in 2 half-moves
16 Rh7 loss in 2 half-moves