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Need Help with June 12, Hard

 
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kdbingham



Joined: 23 Feb 2009
Posts: 5
PostPosted: Wed Jun 29, 2011 8:31 pm    Post subject: Need Help with June 12, Hard Reply with quote
I've been using the Dev version to help me learn more solving techniques. I asked for a hint at this point in the puzzle and received 8 in in r4c1 but the app couldn't explain why. Can anyone explain?




Code:

+---------------------+-------------+----------+
| 28     248    15    | 6   148 7   | 9  15  3 |
| 1689   7      1569  | 389 138 139 | 2  15  4 |
| 3      149    19    | 2   5   149 | 8  7   6 |
+---------------------+-------------+----------+
| 168    5      4     | 7   9   136 | 16 38  2 |
| 126789 123689 13679 | 4   138 136 | 16 38  5 |
| 168    1368   136   | 38  2   5   | 4  9   7 |
+---------------------+-------------+----------+
| 5      39     8     | 39  6   2   | 7  4   1 |
| 179    19     2     | 5   47  49  | 3  6   8 |
| 4      36     367   | 1   37  8   | 5  2   9 |
+---------------------+-------------+----------+

Play this puzzle online at the Daily Sudoku site



Thanks,
Karin
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Jun 29, 2011 9:37 pm    Post subject: Reply with quote
Karin,

Look for a quad in box 4.
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Jun 29, 2011 10:16 pm    Post subject: Reply with quote
The "app" left a cryptic hint.

If you examine the values <1> and <6> in [row 6], you'll see that they are locked in [box 4] and can be eliminated elsewhere in [box 4]. That only leaves <8> in r4c1.

Regards, Danny
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Thu Jun 30, 2011 5:11 am    Post subject: Reply with quote
Karin,

Sudoku Susser is a great learning tool. Search on Google, it is a free download.

To load a Daily Sudoku puzzle, just right click and copy the image. Paste (Ctrl+v) it in the Susser window.

Keith
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kdbingham



Joined: 23 Feb 2009
Posts: 5
PostPosted: Thu Jun 30, 2011 4:01 pm    Post subject: Reply with quote
Keith, Danny, Marty -

Thanks for the help. I'm just starting the harder puzzles. I will definity check out Sudoku Susser. This site is great and people are really helpful.
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