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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Rb8 draw
3 Nh8 loss in 8 half-moves
4 Rd7 loss in 8 half-moves
5 Rd5 loss in 4 half-moves
6 Rd6 loss in 4 half-moves
7 Rf8 loss in 4 half-moves
8 Nb3 loss in 2 half-moves
9 Nb5 loss in 2 half-moves
10 Nc2 loss in 2 half-moves
11 Nc6 loss in 2 half-moves
12 Nd6 loss in 2 half-moves
13 Ne2 loss in 2 half-moves
14 Ne5 loss in 2 half-moves
15 Ne6 loss in 2 half-moves
16 Nf3 loss in 2 half-moves
17 Nf5 loss in 2 half-moves
18 Ng5 loss in 2 half-moves
19 Nh6 loss in 2 half-moves
20 Rc8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves
23 Rh8 loss in 2 half-moves