There are two types of sacrifices: correct ones and mine

First, how to sac my queen, then rook, then bishop, then knight, then pawns.

Naturally, the psychological susceptibility of a match participant is significantly higher than a participant in a tournament, since each game substantially changes the over-all position.

Many Chess players were surprised when after the game, Fischer quietly explained: 'I had already analyzed this possibility' in a position which I thought was not possible to foresee from the opening

I think that the FIDE leaders have to reconsider the current drawing rules - their advantages aren't very clear, but their shortcomings are obvious. Artificial drawing of the lots is detrimental for everyone.

You can't avoid mistakes and bad luck.

Of course, errors are not good for a chess game, but errors are unavoidable and in any case, a game without ant errors, or as they say 'flawless game' is colorless.