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

EGTB: win in 6 half-moves

# move score
1 Rh7 win in 5 half-moves
2 Rh8 loss in 22 half-moves
3 g4 loss in 8 half-moves
4 Rh6 loss in 6 half-moves
5 Nf4 loss in 4 half-moves
6 g3 loss in 2 half-moves
7 Nf2 loss in 2 half-moves
8 Ng1 loss in 2 half-moves
9 Ng5 loss in 2 half-moves
10 Ra4 loss in 2 half-moves
11 Rc4 loss in 2 half-moves
12 Rd4 loss in 2 half-moves
13 Re4 loss in 2 half-moves
14 Rf4 loss in 2 half-moves
15 Rg4 loss in 2 half-moves
16 Rh5 loss in 2 half-moves
17 Rb4 loss in 1 half-moves