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 K6g7 draw
3 K6h7 draw
4 K8g7 draw
5 K8h7 draw
6 Kg5 draw
7 Kg6 draw
8 Kg8 draw
9 Kh5 draw
10 Rd2 draw
11 Rd6 draw
12 Rd7 draw
13 Re8 draw
14 Rf8 draw
15 Ra8 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd1 loss in 2 half-moves
19 Rd3 loss in 2 half-moves
20 Rd4 loss in 2 half-moves
21 Rd5 loss in 2 half-moves