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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kf7 loss in 18 half-moves
3 Rg8 loss in 18 half-moves
4 Kh7 loss in 14 half-moves
5 Kh8 loss in 14 half-moves
6 Rf7 loss in 14 half-moves
7 Kf6 loss in 12 half-moves
8 Kg8 loss in 10 half-moves
9 Rh8 loss in 10 half-moves
10 Kg6 loss in 4 half-moves
11 Kh6 loss in 4 half-moves
12 Rf3 loss in 4 half-moves
13 Ra8 loss in 2 half-moves
14 Rc8 loss in 2 half-moves
15 Rd8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rf5 loss in 2 half-moves
21 Rf6 loss in 2 half-moves