I´ll never be able to solve ANY Sudokus!!! :-(

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I´ll never be able to solve ANY Sudokus!!! :-(

Postby NoClue » Sun Apr 10, 2011 4:26 pm

Hi, all,

I tried to solve an EXTREMELY EASY (!!!) sudoku - in the newspaper "Osnabrücker Sonntagszeitung" it is given with the difficulty "hard":

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


I only found out 2 hidden singles (r1c3 = 9 and r9c3 = 3) and a naked single r6c4 = 6... nothing more...so 54 (!!!!!) cells had to be pencilmarked ...:-( :-( :-(

this is the result (but I couldn´t solve it...) - EVERY 6 months old CHILD could do...:-( :-( :-(

Code: Select all
+---------------+--------------------+----------------+
|1256. 1256. 9..|7.... 23456... 8....|34.. 1234. 134..|
|12578 12578 4..|235.. 235..... 25...|6... 12389 13789|
|24678 3.... 67.|9.... 246..... 1....|47.. 5.... 478..|
+---------------+--------------------+----------------+
|9.... 4567. 8..|356.. 3457.... 45...|1... 346.. 2....|
|14567 14567 567|23568 12345789 24569|3479 3469. 34679|
|3.... 147.. 2..|6.... 1479.... 49...|8... 49... 5....|
+---------------+--------------------+----------------+
|24568 9.... 56.|1.... 2568.... 3....|45.. 7.... 468..|
|45678 45678 1..|58... 5689.... 569..|2... 34689 34689|
|2568. 2568. 3..|4.... 25689... 7....|59.. 1689. 1689.|
+---------------+--------------------+----------------+


24 given numbers - 2 hidden singles found - 1 naked single found - it is LESS than NOTHING!!! :-( :-( :-(

I hope that dealing with Sudokus causes for me:
- neverending headache
- neverending stress
- neverending frustration
- being extremely anxious trying to solve ANY sudokus


Again I need a bunch of tipps and hints - thanks in advance.
NoClue
 
Posts: 48
Joined: 01 April 2011

Re: I´ll never be able to solve ANY Sudokus!!! :-(

Postby JasonLion » Sun Apr 10, 2011 4:48 pm

Do you know about Locked Candidates?

If you look at block six, there are only two places a 7 could go and they are both in row 5. One of the cells in block 6 must contains a 7, so no other cell in row five can contain a 7.

After that you should be able to finish solving.
User avatar
JasonLion
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Location: Silver Spring, MD, USA

Re: I´ll never be able to solve ANY Sudokus!!! :-(

Postby NoClue » Sun Apr 10, 2011 4:53 pm

hi, JasonLion,

NO, I don´t know about locked candidates - even I am dealing more than 4 years with Sudokus. Normally after that long time I should join EVERY Sudoku-competition and WIN them ALL!!!

Many thanks for the tip with the locked candidates.
NoClue
 
Posts: 48
Joined: 01 April 2011

Re: I´ll never be able to solve ANY Sudokus!!! :-(

Postby NoClue » Sun Apr 10, 2011 5:32 pm

Hi, JasonLion,

your tip with the "locked candidates" in box 6 / row 5 was very useful for me. Now I´ve just solved that "monster":

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


Without your help I couldn´t solve it...thanks again!
NoClue
 
Posts: 48
Joined: 01 April 2011


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