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

EGTB: win in 2 half-moves

# move score
1 Rg8 win in 1 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kc6 draw
5 Kd7 draw
6 Rd6 draw
7 Rd7 draw
8 Kb8 loss in 8 half-moves
9 Kc8 loss in 8 half-moves
10 Rc8 loss in 6 half-moves
11 Kd6 loss in 4 half-moves
12 Rd1 loss in 4 half-moves
13 Rd5 loss in 4 half-moves
14 Ra8 loss in 2 half-moves
15 Rb8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf8 loss in 2 half-moves
18 Rh8 loss in 2 half-moves
19 Rd2 loss in 1 half-moves
20 Rd3 loss in 1 half-moves
21 Rd4 loss in 1 half-moves