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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 g7 draw
3 Nf2 draw
4 Rf1 draw
5 Rg1 draw
6 Rh2 draw
7 Rh3 draw
8 Rh6 draw
9 Nb2 loss in 2 half-moves
10 Nc3 loss in 2 half-moves
11 Ne3 loss in 2 half-moves
12 Rh4 loss in 2 half-moves
13 Rh5 loss in 2 half-moves
14 Rh7 loss in 2 half-moves
15 Rh8 loss in 2 half-moves