by ab » Mon Jan 28, 2008 2:50 pm
It's not clear exactly what your question is. If you get your sudokus from newspapers, magazines or puzzle books, the likelihood is you won't need forcing chains, most of the time you won't even need x-wings. All that matters really is that you're enjoying solving the puzzles. If you get your puzzles from a particular source and they're not challenging enough for you, then look elsewhere.
As for the question of speed, it's mostly down to practice, but also different people will prefer different solving strategies and will be able to employ them faster. So you'll have to find out for yourself what strategies suit you!