I have a database with about 9 million games from 2100 up
1.e4
2.d4
3.nf3
4.c4
5.g3
the second move and the opening can not be predicted
white can only play one of these moves black choices the next move.
but white may get to choice the variation
+1 QID -2 French
Queen's Indian Defense - 18
Sicilian Defense - 12
French Defense - 9
Nimzo Indian Defense -14
English Opening - 12
Queen's Indian Defense - 18
Sicilian Defense - 12
French Defense - 10
Nimzo Indian Defense -14
English Opening - 10
+1 French -2 English
Queen's Indian Defense - 18
Sicilian Defense - 10
French Defense - 10
Nimzo Indian Defense -14
English Opening - 11
+1 English -2 Sicilian
Queen's Indian Defense - 16
Sicilian Defense - 10
French Defense - 10
Nimzo Indian Defense -14
English Opening - 12
Upvote English, Downvote QID
Queen's Indian Defense - 14
Sicilian Defense - 11
French Defense - 10
Nimzo Indian Defense -14
English Opening - 12
Upvote Sicilian, Downvote QID
Queen's Indian Defense - 12
Sicilian Defense - 12
French Defense - 10
Nimzo Indian Defense -14
English Opening - 12
up Sicilian, down QID
Queen's Indian Defense - 12
Sicilian Defense - 13
French Defense - 8
Nimzo Indian Defense -14
English Opening - 12
upvote Sicilian, downvote French
upvote QID, downvote sicilian
Queen's Indian Defense - 13
Sicilian Defense - 11
French Defense - 8
Nimzo Indian Defense -14
English Opening - 12
Up Nimzo, down QID
Queen's Indian Defense - 11
Sicilian Defense - 11
French Defense - 8
Nimzo Indian Defense -15
English Opening - 12
