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

EGTB: win in 10 half-moves

# move score
1 g4 win in 9 half-moves
2 Ra1 win in 13 half-moves
3 Rb1 win in 13 half-moves
4 Rc1 win in 13 half-moves
5 Rd1 win in 13 half-moves
6 g3 loss in 2 half-moves
7 Re1 loss in 2 half-moves
8 Rf1 loss in 2 half-moves
9 Rh1 loss in 2 half-moves