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

EGTB: win in 6 half-moves

# move score
1 Rh8 win in 5 half-moves
2 Rf8 win in 7 half-moves
3 Rg8 win in 7 half-moves
4 Kb7 draw
5 Kb8 draw
6 Kd7 draw
7 Kd8 draw
8 Kb6 loss in 2 half-moves
9 Kc6 loss in 2 half-moves
10 Kd6 loss in 2 half-moves
11 Nf2 loss in 2 half-moves
12 Nf4 loss in 2 half-moves
13 Ng1 loss in 2 half-moves
14 Ng5 loss in 2 half-moves
15 Ra8 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rd8 loss in 2 half-moves
18 Re8 loss in 2 half-moves