A safe square for the queen
Put the queen somewhere safe without losing more time
Once your queen has taken on d5, attacks it and gains time. You put it on a5: there White's knights and bishops can't easily reach it. As soon as the d2 pawn moves, with or , the queen pins the c3 knight to the king. It's the most common square at this moment, although d6 and d8 are fine too.
5 in 10 players rated 2200+ choose it online.See dataHide
Online, 2200+: 47% of 3,903. It is hardly played over the board at 2300+.