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 Ra1 draw
4 Rc1 draw
5 Rd1 draw
6 Re1 draw
7 Rg4 draw
8 Rg5 draw
9 Kf7 loss in 2 half-moves
10 Kf8 loss in 2 half-moves
11 Kg6 loss in 2 half-moves
12 Kgg7 loss in 2 half-moves
13 Kgh8 loss in 2 half-moves
14 Kh6 loss in 2 half-moves
15 Khg7 loss in 2 half-moves
16 Khh8 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rh1 loss in 2 half-moves