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

EGTB: win in 4 half-moves

# move score
1 Rg6 win in 3 half-moves
2 Rg7 win in 3 half-moves
3 Rf8 loss in 4 half-moves
4 Na7 loss in 2 half-moves
5 Nb6 loss in 2 half-moves
6 Nd6 loss in 2 half-moves
7 Ne7 loss in 2 half-moves
8 Rd8 loss in 2 half-moves
9 Re8 loss in 2 half-moves
10 Rg1 loss in 2 half-moves
11 Rg2 loss in 2 half-moves
12 Rg3 loss in 2 half-moves
13 Rg4 loss in 2 half-moves
14 Rg5 loss in 1 half-moves
15 Rh8 loss in 1 half-moves