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 Rd2 draw
4 Rd3 draw
5 Rd4 draw
6 Rd5 draw
7 Re7 draw
8 Rf7 draw
9 K7g7 loss in 2 half-moves
10 K7g8 loss in 2 half-moves
11 K8g7 loss in 2 half-moves
12 K8g8 loss in 2 half-moves
13 Kg6 loss in 2 half-moves
14 Kh6 loss in 2 half-moves
15 Rb7 loss in 2 half-moves
16 Rc7 loss in 2 half-moves
17 Rd1 loss in 2 half-moves
18 Rd6 loss in 2 half-moves
19 Rd8 loss in 2 half-moves