The game below is an example of this. For the first part of the opening my opponent follows theory, but around move 10 plays a couple of moves that seem a little slow. On the other hand my impulsive 15. h4 forced me to think, as Ne5 caused problems for the bishop on h6. It was only after I spotted the chance to sacrifice my queen on e7 (beginning with 18.Nc4) that I was happy with my position, although in my initial analysis I did not spot the rook hanging on b8 and just planned to pick up lots of wood for the queen. In the end I played the same idea a couple of moves later, and my opponent walked into a mate.
Press,Shaun - Badrinarayan,Sankeertan [B26]
Swiss Festive Fun, 11.11.2014