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 Rb1 draw
3 Rb4 draw
4 Rb5 draw
5 Rb6 draw
6 Rc7 draw
7 Rd7 draw
8 Re7 draw
9 Rf7 draw
10 Rh7 draw
11 K6g7 loss in 2 half-moves
12 K6h7 loss in 2 half-moves
13 K8g7 loss in 2 half-moves
14 K8h7 loss in 2 half-moves
15 Kg5 loss in 2 half-moves
16 Kg6 loss in 2 half-moves
17 Kg8 loss in 2 half-moves
18 Kh5 loss in 2 half-moves
19 Ra7 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rb3 loss in 2 half-moves
22 Rb8 loss in 2 half-moves