Good Lord that was a click fest, certainly not an expert

done

Done click-click

Solved using AIC technique found on drwho's website. No guesses.
AIC makes it unnecessary to learn x-wing, y-wing, etc., but I found it a bit difficult to understand at first.
Does anyone else here use it?

Tallmike: Almost all experts which require more than one guess can be logically solved using alternate inference chains. It's almost impossible to do without a computer program's help. If Dr. Who's explanation didn't clarify the concept, check out sudokuwiki.org/sudoku and check AIC under 'extreme strategies'. Also similar to X-cycles in same section. Click on AIC or X-cycles and get detailed examples

Thanks gman, I'll do that.

done