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

EGTB: win in 4 half-moves

# move score
1 Kg2 win in 3 half-moves
2 Rg5 draw
3 Rg6 draw
4 Rg7 draw
5 Kd2 loss in 2 half-moves
6 Kd3 loss in 2 half-moves
7 Kd4 loss in 2 half-moves
8 Ke1 loss in 2 half-moves
9 Ke4 loss in 2 half-moves
10 Kee2 loss in 2 half-moves
11 Kef2 loss in 2 half-moves
12 Kf3 loss in 2 half-moves
13 Kf4 loss in 2 half-moves
14 Kfe2 loss in 2 half-moves
15 Kff2 loss in 2 half-moves
16 Rg2 loss in 2 half-moves
17 Rg3 loss in 2 half-moves
18 Rg4 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh1 loss in 2 half-moves