Yugoslav attack crashes home again

Another example of a successful pursuit of a castled king in a Sicilian defence with the Yugoslav-style attacking set up. For previous instalments, see here for a failure, and here for a success. The black Queen goes on an early excursion, but, incredibly, stays rooted to a5 for the entirety of the rest of the game. The queenside counterplay which black should have pursued simply never arrives, and I take advantage of a couple of bad blunders by black around his castled king. As usual, mistakes on both sides, and it was a good job I wasn't playing someone able to exploit mine. But I had my plan, and I followed through with it.