Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 K4g4 draw
3 K4g5 draw
4 K5g4 draw
5 K5g5 draw
6 Kg3 draw
7 Kg6 draw
8 Kh3 draw
9 Kh6 draw
10 Ra8 draw
11 Re8 draw
12 Rf8 draw
13 Rh6 draw
14 Rh7 draw
15 Rb8 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves