Attacking against the Sicilian Scheveningen

Here are tactical themes in a a set-up against the sicilian Scheveningen.
The key position (Tabiya) is as follows with White to move :

The key move is Qe1, signaling the intention Qg3 attacking on the king side. White will try to play Bd3,Bd4, and then e4-e5 or f4-f5 in conjonction with Qg3. The Tabiya above is reached after the following sequence:

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Qc7 7.Be3 Nf6 8.O-O Be7 9.f4 d6 10.Qe1 O-O

Before solving positions issued from this opening in a following post, let's go through three thematic games played from the tabiya (Bacrot-Lautier 2005, David-Plaskett 2000, Anand-Ivanchuk 2008)

Here's the link: http://games.top10chess.com/sicilianQe1var.htm