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