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

EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kf7 draw
3 Kf8 draw
4 Kgg7 draw
5 Kgh7 draw
6 Khg7 draw
7 Khh7 draw
8 Rc1 draw
9 Rd1 draw
10 Re1 draw
11 Rf1 draw
12 Rg5 draw
13 Rg6 draw
14 Rh1 draw
15 Ra1 loss in 2 half-moves
16 Rb1 loss in 2 half-moves
17 Rg2 loss in 2 half-moves
18 Rg3 loss in 2 half-moves
19 Rg4 loss in 2 half-moves