Quote:
Originally Posted by masraum
Wow, cool. That's a lot of numbers!
I need to get a book. Maybe next week when I'm in town, I'll stop by a B&N.
I saw a page about the Phistomefel ring the other day. I thought it was interesting. I was curious, so looked to see what sort of techniques are out there for helping to solve them. THere are a bunch, and some seem really complex, more so than needed.
https://masteringsudoku.com/phistomefel-ring/ |
I have found that even with expert sudoku puzzles, penciling in numbers that have only two options in a 3x3 will get you 90% there. And if there are two numbers that are penciled into the same two cells of the 3x3 cube, I consider those two cells 'locked' as no other number can go into either of those two cells.
There are more advanced techniques folks use, but these work well for me.