I got answers from 15 people, what is very good me, because I had to examine the answers manually :-)
10 of them solved all 8 puzzles (in ABC order):
Emma, Euklid, mucha, Nikola, Para, Puzzlemad, PuzzleScot, Sknight, wicktroll, yureklis
5 of them finished the competition with less than 8 puzzles, the number between the brackets show the number of puzzles :
andozso (7), Anti (7), Zorant (7), sf2l (6), debmohanty (4)
I'm really happy that there were some female competitor on the contest, and 3 player from Hungary.
Thank you to everybody for playing and for the useful comments.
Finally I would like to render thanks to Pál Madarassy, who checked these puzzles.
The puzzles still remain available.