I play this opening as Black myself. It's known as the Taimanov Sicilian.
Were you playing Blitz or Bullet? If so, that explains it. Probably pre-moved.
After the normal move order, 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7, which transposes to the game above, White has the following options:
A) 6.Be2, usually intending 6...a6 7.O-O Nf6 8.Be3 Bb4 9.Na4 and Black has options here. This is considered the "Main Line".
B) 6.Be3 and 7.Bd3 - Considered a tad more aggressive than the main line, but there are different issues with this line compared to the main line.
C) 6.Be3 and 7.Qd2 - Usually shows intent of playing the English Attack
NOTE: 6.Be3 can also transpose to the main line after 6...a3 7.Be2.
D) 6.f4, where Black must be careful about developing that Knight to f6 because of potential e5 issues by White.
E) 6.g3 - the Fianchetto Variation, which is considered passive and nothing to scare Black off in the Taimanov
F) Then there are some real offbeat sidelines, like 5.Be3, 5.Nxc6, 5.Nb5 (the most common of the sidelines, usually leading to either a Sveshnikov Structure after 6.Bf4 or a Maroczy Bind after 6.c4), etc.
6.Bd3?? is a beginner's blunder and hangs the Knight.
Hi all, I've recently been trying to open some games with the sicilian defense, just to see what its all about, and a lot of the moves seem really odd and nonlogical. For example, this happened in one of my games