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MM 1307 2/6/09 diabolical

 
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Fri Feb 06, 2009 6:55 pm    Post subject: MM 1307 2/6/09 diabolical Reply with quote
Code:

+-------+-------+-------+
| . 1 5 | . 8 . | . . . |
| . . . | . 6 . | . . 7 |
| . . . | . . 7 | 9 . . |
+-------+-------+-------+
| . 3 . | 8 7 . | . 1 . |
| 2 . . | . . . | . . 9 |
| . 4 . | . . 3 | . 8 . |
+-------+-------+-------+
| . . 2 | 3 . . | . 4 . |
| 1 . . | . 9 . | . . . |
| . . . | . 1 8 | 6 . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site
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wapati



Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.
PostPosted: Sat Feb 07, 2009 3:54 am    Post subject: Reply with quote
Pretty nice puzzle. Either of an ER or a skyscraper on 7s then an xy finish.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sat Feb 07, 2009 3:57 am    Post subject: Reply with quote
wapati,
yes, every now and then these puzzles get a little tricky. lately that hasn't been the case.

I did find a one stepper.

Code:
.---------------------.---------------------.---------------------.
| 7      1      5     | 29     8      29    | 34     36     346   |
| 3489   289    3489  |*145    6     *145   |*18     25     7     |
| 468    268    468   |*145    3      7     | 9      25    *18    |
:---------------------+---------------------+---------------------:
| 569    3      69    | 8      7      59    | 24     1      24    |
| 2      78     178   | 156    4      15    | 357    367    9     |
|*59     4      17    |-1569   2      3     | 57     8      56    |
:---------------------+---------------------+---------------------:
|*89     789    2     | 3      5      6     | 178    4     *18    |
| 1      5678   34678 | 247    9      24    | 23578  37     235   |
| 34     57     347   | 247    1      8     | 6      9      235   |
'---------------------'---------------------'---------------------'

(1)r3c4 = (1)r2c46 - (1=8)r2c7 - (8)r3c9 = (8)r7c9 - (8=9)r7c9 - (9)r6c1 = (9)r6c4; r6c4 <> 1
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