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