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

EGTB: win in 4 half-moves

# move score
1 Rd8 win in 3 half-moves
2 Kb6 draw
3 Kb7 draw
4 Kc6 draw
5 Kc8 draw
6 Kd7 draw
7 Kd8 draw
8 Rc8 draw
9 Rh8 draw
10 Ra7 loss in 10 half-moves
11 Kb8 loss in 6 half-moves
12 Kd6 loss in 2 half-moves
13 Nb3 loss in 2 half-moves
14 Nb7 loss in 2 half-moves
15 Nc4 loss in 2 half-moves
16 Nc6 loss in 2 half-moves
17 Ra6 loss in 2 half-moves
18 Rb8 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves