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 Rc1 draw
9 Rc5 draw
10 Rc6 draw
11 Rc8 draw
12 Rd7 draw
13 Re7 draw
14 Rf7 draw
15 Ra7 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc3 loss in 2 half-moves
19 Rc4 loss in 2 half-moves