>P.S. I don't believe the comment above yours. The dude went from 2200 to 1300??

Like I could provide links to my games. I'm not a liar. I estimate I am a 1800-2000 player.

The thing I don't seem to know, it would seem to me when I play against a 1300 who never makes a blunder or mistake. It then happens 20 games straight. They certainly play various inaccuracies, and I hold myself as well as I do compared to stockfish 5.

In 1 game I was up 2 pieces and the computer didnt think they made a mistake nor blunder. >90% accuracy as a 1300...

I guess, I'm missing some fundamental thing.