I just finished this 10+5 game and I feel I could won, but I can't find where... Can you help me? Or is it just a feeling and I should be glad for a draw? I admit I played terrible :o) It also shows that no game is lost until it is mated. :o)

I'm sorry I will never play chess when I'm ill again :D In move 26. black can't take pawn because of Nf6+

move 28.......Rg3 + 29.Kh6 Rg5    then what does he do. if  he plays Kh7 then Rg5 again and he can only bring Qf6 but tbh i think it should almost definitely lead to a win for white.

What do you mean by win ? Mate or just winnig position ? There are too many missed chances for both. Towards the end 29.Qh5 is simple win in all variations. There is nothing black can do. Check details yourself.

thank you for your comments :o)

28. Rg3 28... Qxf6

Or it can't?

edit. Hey! Where is that comment that have Rg3 idea? It just disappeared!

i agree with people who say 29. Qxh5 is winning.  Black can stall for a few moves, but mate is forced.

A response by black not mentioned yet is d4.  Not too interesting, but just different options but the same general strategy.