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

EGTB: loss in 1 half-moves

# move score
1 gxf1=K loss in 4 half-moves
2 gxf1=N loss in 4 half-moves
3 Kxf1 loss in 3 half-moves
4 gxf1=B loss in 2 half-moves
5 gxf1=Q loss in 2 half-moves
6 gxf1=R loss in 2 half-moves