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| mike turner
| | Joined: 10 Feb 2006 | | Posts: 2 | | : | |
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 Posted: Fri Feb 10, 2006 5:27 pm Post subject: help for a month old addict |
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been addicted for about a month...getting better but must be missing a logic step and dont always finish a "harder" puzzle. This is where i'm stuck:
482x1367x
3162xx84x
795648x1x
863452791
947361528
251x8x436
6781x495x
x29xx6x84
x348xxx67
I have checked my answers and all numbers are correct, so far...just need another logic step to help me in the future. Hate to not finish a puzzle! Is there ever a time where you just have to guess (trial and error)? |
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| Henk
 | | Joined: 13 Nov 2005 | | Posts: 105 | | : | |
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| Posted: Fri Feb 10, 2006 6:54 pm Post subject: |
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You can use an XY-Wing, you get this then:
482.1367.3162..84.795648.1.863452791947361528251.8.4366781.495..29..6.84.348...67
before:
after:
Click here for an explanation XY-Wing...
BTW, for the puzzle you posted you can aslo use the folowing techniques for a next step:
-BUG
-Forcing chain
| Quote: | | Is there ever a time where you just have to guess (trial and error)? |
Never! Never give up! There allways is an logic solution!
_________________
Generate and solve Sudoku puzzles with Into Sudoku! |
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| mike turner
| | Joined: 10 Feb 2006 | | Posts: 2 | | : | |
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| Posted: Sat Feb 11, 2006 6:52 pm Post subject: |
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| Thanks, Henk.....think i understand the concept....just probably need to see some more to help recognize....found a good link is this message board that also helps and gives several examples......thanks again |
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