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 Kd1 draw
3 Kd3 draw
4 Ke1 draw
5 Ke3 draw
6 Kf1 draw
7 Kf3 draw
8 Rf1 draw
9 Rf3 draw
10 Kd2 loss in 4 half-moves
11 Rf5 loss in 2 half-moves
12 Rf6 loss in 2 half-moves
13 Rf7 loss in 2 half-moves
14 Rf8 loss in 2 half-moves
15 Rg2 loss in 2 half-moves
16 Rh2 loss in 2 half-moves