Thanks, Narz. I am not particulary satisfied with my play, nowithstanding that I retired from competitive chess last summer and due to some serious health issues haven't had much time for this.
As far as I can see, I didn't play any really good games. A cute mate in one of them after a pseudosacrifice of the queen, otherwise I just profited on other people's mistake.
Regarding the two games we played, the first might have been interesting. 6...Ne4, which I believe was first played in Portisch - Kramnik, Biel 1994, is a good attempt to avoid the typical positional squeeze which Black often is subjected to in this variation (A good example on this is Bobotsov - Pomar, Skopje 1972). 9.c4 was an attempt to complicate the game since more normal continuations are drawish. I knew about 9...e5 - I even analyzed it some ten years ago, but I had forgotten all about it - and I think it is quite good. Interestingly enough it is not even mentioned by Kramnik in his notes in Informator to the above-mentioned game...
However, 12...Bb4+ was a mistake, since the bishop is left hanging after the king moves so that you don't have time to capture on c4. Instead 12..Qa5+ would have led to a double-edged position here Black should be fine. At this moment I will not dare to conclude who is better. Then you made some more inaccuracies. I should have liked to annotate this game more thoroughly, but that will have to wait until things are improving.
In the second game you played a rather passive variation, and 10.Nd1 was rather artificial. I had expected 10.0-0-0 with the prospects of a real fight. After 13...d4 I think I am a little better, and 16.g4 is surely a mistake. You should play 16.f5 before you advance your g-pawn, with sufficient counterplay. You are then right that 17.g5 is bad; after 17...Nd5 I should be winning. Also in the position where a draw was agreed I have a clear advantage, and I wouldn't have offered a draw if it wasn't for the tournament position. I have space, the e5-square and best structure.
I don't really know what advice I should give you regarding your chess, except that you shouldn't worry to much about tactical oversights, that happens to everybody. Judging from what I know, I think you should cultivate your tactical abilities which are formidable. Leave it to old people like myself to emulate Botvinnik and Petrosian.