sudoku of the day step by step solution

Advanced methods and approaches for solving Sudoku puzzles

sudoku of the day step by step solution

Postby michgirl » Fri Feb 03, 2006 4:02 pm

can't get step by step solution for diabolical puzzles for 2/1 and 2/2. Is there someone I can email about this? Thanks
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Postby TKiel » Fri Feb 03, 2006 11:01 pm

It might help to indicate who/what publishes the puzzles in question, for those of us not in the know.

Tracy
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solutions

Postby michgirl » Sun Feb 05, 2006 8:26 pm

Hi Tracy--the puzzles are from Sudoku of the day on the web. I noticed that you are from Kalamazoo--so am I--actually Richland. Sharon By the way--I did notify the support system and they are working on a fix. I like the step by step solution because it sometimes helps me see forcing chains and x wings. Thanks
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Postby Crazy Girl » Sun Feb 05, 2006 11:12 pm

For those of us not in the States here's the website. Sudoku Of The Day

1st Feb 2006 - Diabolical
Code: Select all
 4 7 6 | . . 2 | . . 9
 8 3 . | . 1 . | . . .
 2 . . | 4 . . | . . 5
-------+-------+------
 . . . | 2 . . | . 9 .
 6 . . | . 5 . | . . 8
 . 5 . | . . 7 | . . .
-------+-------+------
 1 . . | . . 6 | . . 2
 . . . | . 4 . | . 3 1
 5 . . | 7 . . | 9 4 6


states it needs: Single Position (Hidden Single), Single Candidate (Naked Single), Candidate Lines (Locked Candidates), Double Pairs (~X-Wing / locked candidates), Multiple Lines (~X-Wing / locked candidates), Hidden Pairs, Forcing Chains.

2 Feb 2006 - diabolical
Code: Select all
 . . 2 | . 3 6 | . . 1
 . 7 9 | . . 8 | . 2 .
 . . . | . . . | 6 . .
-------+-------+------
 . . 6 | 1 . . | 7 . 5
 . 8 1 | . 5 . | 2 9 .
 5 . 7 | . . 4 | 1 . .
-------+-------+------
 . . 3 | . . . | . . .
 . 9 . | 8 . . | 3 5 .
 2 . . | 3 4 . | 9 . .


says it needs: Single Position, Single Candidate, Candidate Lines, Hidden Pairs, X-Wings, Forcing Chains.
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Postby Havard » Mon Feb 06, 2006 12:21 pm

hi.

the 1st of February puzzle only needs one skyscraper to solve!:)

Taking out all the single candidates leaves you here:

Image

and then finding this cutie:

Image

solves the whole thing!:) in other words no need for:
Candidate Lines (Locked Candidates), Double Pairs (~X-Wing / locked candidates), Multiple Lines (~X-Wing / locked candidates), Hidden Pairs, Forcing Chains.



havard
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