Frustrating opening
2.Bc4 is a mistake because you can play 3.e6 rendering it useless.
3.a4? gives himself a weak pawn, wastes a tempo, achieves nothing that i can see.
5...g6 drives the queen back, but i would say Nf6 is better, developing a piece with tempo and avoiding the weak dark squares. You can still play g6 later if you decide to put the bishop on g7.
6...d6 moving another pawn (and you will move it again later) when really you should be developing pieces. Having played 5...g6, you should probably play 6...Bg7 to continue development and sort out those dark squares, then you will want to play Nf6 soon after.
11...Qa5+ gives white a tempo with 12.Bd2 Qd8 to save the knight on f6.
12...Bh6 loses the knight on f6
10...Ne5?
10...Nd4 is much better (attacking Q and threatning K-R fork)
11...Qa5+ looks bad to me. The Q was protecting the Knight on f6.
12...Bh6 is a major blunder. it allows Qxf6, forking the Knight on e5, the Rook on h8 and putting more pressure on the f7 square.
Yeah, sorry it was mostly relevant to a reply by Nalikill who suggested Nf6. If you play c5, then just develop your pieces and dont think you need to do anything terribly drastic against the queen right away. I'm afraid i dont know the sicilian very well. I guess in your game something along the lines of
but there may be blunders and better moves in there since i was just trying to quickly give a general idea
[edit missed chances for black, with opportunities to play Nh5. For example 11...Nh5 12.Bxd7 Nxg3 13.Bxd8 Nxh1 14.Bb6 Rxh2 is totally winning for black]
when i first started playing chess on yahoo i was beaten by an e4 opening which would jump the queen and bishop out and immediately go for a mate on like move 4 or 5. since i found this site and took a more academic approach to chess, i have rarely run into the opening. and when i did, it was obvious they didnt really know how to use it past the fools mate they were hoping for. this guy last night, however, would be able to use it past the first few moves and it was such an aggressive and confrontational way of using it that i was swiftly beaten 3 times in a row, this is the last of those 3 games, none of which went past 15 moves. i have just recently started practicing the sicilian against e4 openings and was trying to use it against this but i was horribly massacred each time.