About 2 months ago the first sudoku was published in an Austrian newspaper. My friend and i liked it from beginning. I wrote a small program to solve and create puzzles and found this site as starting point to learn more about it.
It was fascinating then to see how Nick70's turbot fish gave a new impulse for creators and solvers.
But now i'm sure (maybe after xy-wing) that the end of new techniques has come that could help me to solve a puzzle better (when im stuck, i try to find some if-thens to eliminate a number, if this doesnt help, i look for a good cell as starting point to try a number or two simultaneously - thats as good as any expensive technique).
The last interesting question with sudoku for me is the 16-clue problem (but i dont have the time to take part actively).
So i will hop back to learn go again. For those who are interested: Its easy to find a place where you can play online,
here you can learn more after a beginners book (or search for the Go Weekly magazine).
Many thanks to all who helped me to learn so much (most of them politeley) and please forgive me some hasty postings.