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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 Ka1 draw
3 Kc1 draw
4 Kd8 draw
5 Ke7 draw
6 Rf1 draw
7 Rf6 draw
8 Rf7 draw
9 Rh8 draw
10 Ka2 loss in 2 half-moves
11 Kb2 loss in 2 half-moves
12 Kc2 loss in 2 half-moves
13 Kd7 loss in 2 half-moves
14 Kf7 loss in 2 half-moves
15 Rf2 loss in 2 half-moves
16 Rf3 loss in 2 half-moves
17 Rf4 loss in 2 half-moves
18 Rf5 loss in 2 half-moves