Chess rating system


today mar 22 my opponent resigned after 16 moves. my rating at the time was 1600. my rating fell to 1592 and his is 1372 (i dont know if his changed). how does that happen?


Many players bloking game,when they are in difficulty.I can not move and lose the game.What can i do?

Many players bloking game,when they are in difficulty.I can not move and lose the game.What can i do?
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In my last 2 games, suddenly the positions changed (without touching anything) and it said that I lost - crazy, and my points went down. Then in the next game after 2 moves it appeared that I left, which I did not and I was declared "lost" and the score reduced.
Does anyone experience the same?
Itzik 11
Black starts. Find few first strongest moves. I missed combination in the heat of battle, even though it is an easy one.

How many moves need to be played before it is able to be rated? I had played only two moves (deliberately playing slow) when my opponent timed out (banned!)and the game was not rated. From memory 3 moves need to be played, but I'd like to know for sure.
In the position above I played:
.......... Bb7:f3
Hb3:f3 b5:c4
But there is much stronger combination:
.......... Rc8:c4
Rc1:c4 Nb7-d5
and white is forced to lose Queen