win against higher rating

http://en.lichess.org/W2JGWvgmbCUc

whats the opponents mistake?

interesting game , knight sacrifice http://en.lichess.org/zo8VcrpGOkzV

the first game is interesting, He lost because of the h file
basically, I think He was focused on the g file due to the queen
bishop threat and forgot the h one, probably because It is not
a common thing to push so early h5
well the mistake that creates the whole mess for white is moving the knight to g3, it is only a pawn according to the machine, -1
but in practice It is a very difficult position to deffend hence there was a big blunder later,
congratulations for the game Dima666.

the sacrifice is nice too,
a pity you did not finish it with the queen.

thanks for comments . appreciate this. yes I see know that im overlooking of the checkmate with queen

*now