The Berlin Defence suited my strategy for the match. I had a defensive strategy - Actually, I had in my pocket some other sharper stuff to fall back on - but first I wanted to try the defensive strategy with Black and it worked so well.

At some point he seemed to lose all confidence trying to break down the Berlin Wall. He was still fighting as only Kasparov can, but I could see it in his eyes that he knew he wasn't going to win one of these games.

In games against humans, you often win because the opponent blunders a piece, and you can often survive when you do it yourself. Against the computer, you make only one mistake - the last one.

Playing rapid chess, one can lose the habit of concentrating for several hours in serious chess. That is why, if a player has big aims, he should limit his rapidplay in favour of serious chess.

In this respect, I suppose I'm the total opposite of Garry [Kasparov]. With his very emotive body language at the [chess]board he shows and displays all his emotions. I don't.

Chess is so deep, I simply feel lost.

No - I'm quite calm inside during the game for most of the time - not 100%, but generally very calm.