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

EGTB: win in 4 half-moves

# move score
1 g7 win in 3 half-moves
2 Rb8 win in 3 half-moves
3 Rf3 win in 3 half-moves
4 Re8 win in 5 half-moves
5 Rf6 win in 5 half-moves
6 Rf7 win in 5 half-moves
7 Rg8 win in 5 half-moves
8 Rh8 win in 5 half-moves
9 Ra8 loss in 2 half-moves
10 Rc8 loss in 2 half-moves
11 Rd8 loss in 2 half-moves
12 Rf1 loss in 2 half-moves
13 Rf2 loss in 2 half-moves
14 Rf4 loss in 2 half-moves
15 Rf5 loss in 2 half-moves