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

EGTB: win in 6 half-moves

# move score
1 Ra8 win in 5 half-moves
2 Rb8 win in 5 half-moves
3 Rc8 win in 5 half-moves
4 Rf8 win in 5 half-moves
5 f8=B loss in 2 half-moves
6 f8=K loss in 2 half-moves
7 f8=N loss in 2 half-moves
8 f8=Q loss in 2 half-moves
9 f8=R loss in 2 half-moves
10 Nb3 loss in 2 half-moves
11 Nc2 loss in 2 half-moves
12 Rd8 loss in 2 half-moves
13 Re1 loss in 2 half-moves
14 Re2 loss in 2 half-moves
15 Re3 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves
21 Re4 loss in 1 half-moves