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Sudoku for Dummies

 
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robertferre
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PostPosted: Fri Apr 21, 2006 8:39 pm    Post subject: Sudoku for Dummies Reply with quote

I was doing some puzzles from the book Sudoku for Dummies. The categories are: easy, tricky, very hard, and diabolical. (Or something close.) I can do the hard and very hard ones on Daily Sudoku, given a bit of time (about an hour). But the "tricky" category in the Sudoku for Dummies completely stumped me. I gave up on three different puzzles after two hours each. I mention this as part of the discussion of ratings. I'm a newbie, and thought I was doing well until I found that I have not yet reached the level of "dummy." Has anyone else done puzzles from that book?
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Marty R.



Joined: 12 Feb 2006
Posts: 5063
Location: Rochester, NY, USA

PostPosted: Fri Apr 21, 2006 8:57 pm    Post subject: Reply with quote

I had borrowed that book from the library. If I remember correctly, the hardest rating of the 9x9 puzzles was "diabolical", which is quite an overstatement, in my humble opinion. I don't recall "tricky", but he had some puzzles in there bigger than 9x9, which I did not attempt.
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Oregonian



Joined: 08 Jun 2006
Posts: 1
Location: Oregon

PostPosted: Thu Jun 08, 2006 5:06 pm    Post subject: Reply with quote

I'm doing puzzle 220 (rated "tough") in what I think is the first Dummies book. I've got 16 blank cells. I know what I need in every row, every column, and every 3x3 section. Trouble is, for every cell, there's 2 (in one case 3) possibilities. I've been able to solve a couple of the "diabolical" puzzles, but I'm stuck on this one.

I did check the answer, and I haven't made any mistakes to date.

Now I could just take a guess on one of the cells that has 2 possibilities, and pencil everything that follows in on the other cells, and see if it works. I've got a 50% chance of being right. If not, I can reverse the guess.

My question is, do you sometimes have to use this process, or am I missing something? Thanks
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Carl S



Joined: 15 Aug 2006
Posts: 1

PostPosted: Tue Aug 15, 2006 4:19 pm    Post subject: Reply with quote

I'm stuck in exactly the same spot. Did you ever find a way to solve the puzzle without guessing?
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David Bryant



Joined: 29 Jul 2005
Posts: 559
Location: Denver, Colorado

PostPosted: Tue Aug 15, 2006 4:38 pm    Post subject: It must be a "BUG + 1" pattern Reply with quote

Oregonian wrote:
... for every cell, there's 2 (in one case 3) possibilities.

From the description, this is a "BUG + 1" pattern. You can read more about it on the brainbashers website. dcb
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