After good game against Rybka I disapointed myself and had a bad loss at the same oppening against my friend and chess com player iogyiogy...

at 20. could you have taken on d5 with the pawn instead? (20. exd5)

I agree with Anati there you should have captured the Knight on d5 and was waay aggressive and lost the queen.

You shoud have taken his pawn on d5 rather than letting him as he would move his pawn on c7 or e7 which would leave the game quite open.

You lost because you only focused on one side of the board you did not attack his right side. The bishop on g5 should have been pulled back and you should have moved the Knight on g5 early and "transitional mate" the king by the Bishoop on h7 which would make him move his Knight on g6 Then you would have some chance to beat him because that Knight was really the one who was defending the e4 and g4 square. The queen on g4 would increase the pressure and you still had black bishop which would mean mate in 3.

he was white, maybe he will answer this  :-)

here i'am!....well...thank you my friend to have published this game...

my opinion is at the 17th move the black could played Kh8 before move the pawn in the f5 square (attack my pawn chain is a very good idea!)

or played c5 and stopped the d5 pawn with the knight placed in d6

what do you think about?

I agree if i played Kh8 before f5 i think that i wouldnt lose, but I totaly overlooked  that Bishop was aiming my king

In last couple months when i made one mistake i usualy lose the gam  heheh

 i haven't chess programm in my pc...have you analyze the game with Rybka?

what does it say about?

yes, i did. The game were more and less even till 17...f5  when evaluation was  around +1,5 for you.  and my 13...wasnt pretty good. it says i should have played 13...Nc5 and than Bg4. or at least 17...B:f3

yes...

13...Nc5

14 Dd2, Bg4

15 Be2..ecc ecc

with parity...

great game :)