For the statistically minded, all of the following moves have been selected
by GMs according to Megabase...
Move Games White Score
6. ...c6 3344 51% 6. ...Bg4 2311 55% 6. ...Nc6 882 53% 6. ...Nbd7 723 57% 6. ...c5 491 53% 6. ...a6 353 49% 6. ...e5 157 61% 6. ...b6 133 61% 6. ...Na6 80 59% 6. ...e6 65 38% 6. ...Nfd7 23 59% 6. ...a5 16 50% |
So c6 is most popular and scores above average for Black.
Bg4 is very popular too, and scores avergagly, but the less popular
Nc6 is scoring a little better, so well worth a look.
Black has a lot of choice to suit taste, and though some lines don't seem
to score that well, moves like e6 and a6
could be catching White players out.
The following have also been tried, but apart from Bd7 played by
an IM once, they aren't selected by titled players.
6. ...Bd7
6. ...Re8
6. ...h6
6. ...d5
6. ...Nh5
6. ...Ng4
6. ...Qe8