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

EGTB: win in 5 half-moves

# move score
1 Rg5 win in 4 half-moves
2 Rg8 win in 8 half-moves
3 Rg6 win in 12 half-moves
4 Rh7 win in 16 half-moves
5 Ra7 loss in 2 half-moves
6 Rb7 loss in 2 half-moves
7 Rc7 loss in 2 half-moves
8 Rd7 loss in 2 half-moves
9 Re7 loss in 2 half-moves
10 Rf7 loss in 2 half-moves
11 Rg1 loss in 2 half-moves
12 Rg2 loss in 2 half-moves
13 Rg3 loss in 2 half-moves
14 Rg4 loss in 2 half-moves