There's a lesson in all of this

I think (refering to Kramnik overlooking a mate in one). And the lesson is that you shouldn't rely too much on your patern recognition skillz, because apparently patern recognition skillz is what caused Kramnik to overlook the mate in one. If we have to believe chess player, trainer, editor of the Russian chess magazine "64" Alexander Roshal that is... But who am i to argue with an expert?

Alexander told us that the mating pattern that occurred during the game, with the white queen protected by a knight on f8, is extremely rare in chess. It is not one of the patterns that chess grandmasters automatically have in their repertoire. This was confirmed by a GM commentator in Bonn, who after Kramnik's move did not notice that it was a blunder and started discussing White's options – but not the mate in one. Alexander Roshal assured us that, had the white knight somehow moved to g5 or f6, Kramnik would have seen the mate in micro-seconds. The square h7 would have had a big red light blinking on it, Roshal said, because this kind of mate (or mating threat) occurs quite often in chess, and the mating pattern would be firmly anchored in his mind. With the knight in an unusual position the square remained dark and Kramnik simply did not see the danger. (excerpt taken from this article)