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

EGTB: win in 4 half-moves

# move score
1 g4 win in 3 half-moves
2 Rf5 draw
3 Rf8 draw
4 Rg7 draw
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 Rf1 loss in 2 half-moves
11 Rf2 loss in 2 half-moves
12 Rf3 loss in 2 half-moves
13 Rf6 loss in 2 half-moves
14 Rh7 loss in 2 half-moves
15 Rf4 loss in 1 half-moves