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 K7g7 draw
3 K7g8 draw
4 K8g7 draw
5 K8g8 draw
6 Kg6 draw
7 Kh6 draw
8 Rd7 draw
9 Re3 draw
10 Re8 draw
11 Rf7 draw
12 Ra7 loss in 2 half-moves
13 Rb7 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Re1 loss in 2 half-moves
16 Re2 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Re5 loss in 2 half-moves
19 Re6 loss in 2 half-moves