This is one of my favourite openings, it tends to result in a very highly tactical and sharp position.
Possible continuations:
3. d4 (Best move)
3. c3 (another top engine move)
3. c4 (one of the top engine moves, but very rare):
Note that in all of the above continuations, Black does not fianchetto the bishop immediately.
There are also some other cases where 2. ...c5 is played; For example:
Note: There is a very classic opening trap, which may arise like this:
Here is an example gamehttps://www.chessgames.com/perl/chessgame?gid=1104317
This is one of my favourite openings, it tends to result in a very highly tactical and sharp position.
Possible continuations:
3. d4 (Best move)
3. c3 (another top engine move)
3. c4 (one of the top engine moves, but very rare):
Note that in all of the above continuations, Black does not fianchetto the bishop immediately.
There are also some other cases where 2. ...c5 is played; For example: