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 Kgh8 draw
6 Kh6 draw
7 Khg7 draw
8 Khh8 draw
9 Ra7 draw
10 Rb1 draw
11 Rb6 draw
12 Rb8 draw
13 Rc7 draw
14 Kg6 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rd7 loss in 2 half-moves
20 Re7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves