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 Ke7 draw
3 Ke8 draw
4 Kff7 draw
5 Kfg7 draw
6 Kgf7 draw
7 Kgg7 draw
8 Kh7 draw
9 Kh8 draw
10 Ra1 draw
11 Re1 draw
12 Rf1 draw
13 Rg5 draw
14 Rg6 draw
15 Rh1 draw
16 Rb1 loss in 2 half-moves
17 Rc1 loss in 2 half-moves
18 Rd1 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves