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

EGTB: win in 2 half-moves

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