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 Kd7 draw
3 Kd8 draw
4 Ke1 draw
5 Ke2 draw
6 Kf2 draw
7 Kg1 draw
8 Kg2 draw
9 Rg8 draw
10 Rh8 draw
11 Ke7 loss in 2 half-moves
12 Kf7 loss in 2 half-moves
13 Rf2 loss in 2 half-moves
14 Rf3 loss in 2 half-moves
15 Rf5 loss in 2 half-moves
16 Rf6 loss in 2 half-moves
17 Rf7 loss in 2 half-moves