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

EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Rg7 win in 3 half-moves
3 Kf8 win in 7 half-moves
4 Kf7 draw
5 Kg6 draw
6 Kgg7 draw
7 Kgh8 draw
8 Kh6 draw
9 Khg7 draw
10 Khh8 draw
11 Ra2 draw
12 Rf2 draw
13 Rg1 draw
14 Rh2 draw
15 Rb2 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rd2 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rg5 loss in 2 half-moves