How to attack against the Sicilian Defense : follow the GMs !

White to play and win in the three positions below.

All positions come from the sicilian opening with Black ( specifically Sicilian Kan/Taimanov), and White is playing the attack quite well ( strong GM each time !)


1-Spassky-Capelan



2-Nunn-Gheorgiu



3-Anand-Polgar

Note:
The reader interested in the solutions can replay the entire games (and additional thematic sicilian games, featuring wins from the black side too) through this link:

http://theory.top10chess.com/template.html

This link is using a new reader developed by Paolo Casachi (Pgn4Web).