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 Ke7 draw
4 Kf7 draw
5 Rf5 draw
6 Rf6 draw
7 Rf7 draw
8 Kd8 loss in 4 half-moves
9 Rg8 loss in 4 half-moves
10 Rh8 loss in 4 half-moves
11 Rf1 loss in 2 half-moves
12 Rf2 loss in 2 half-moves
13 Rf3 loss in 2 half-moves