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

EGTB: win in 2 half-moves

# move score
1 Rg4 win in 1 half-moves
2 Kc5 draw
3 Kd3 draw
4 Kd5 draw
5 Ke3 draw
6 Ke4 draw
7 Ke5 draw
8 Re4 draw
9 Rf5 draw
10 Rf7 draw
11 Rf8 draw
12 Kc3 loss in 2 half-moves
13 Kc4 loss in 2 half-moves
14 Rf1 loss in 2 half-moves
15 Rf2 loss in 2 half-moves
16 Rf3 loss in 2 half-moves
17 Rf6 loss in 2 half-moves
18 Rh4 loss in 2 half-moves