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Insane Decabit

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Fri Jun 05, 2009 5:27 pm    Post subject: Insane Decabit Reply with quote

Sample of Decabit, level "Insane," on a par with DailySudoku VH.
I find the Decabit "nightmare" a step above VH.

Earl (not insane)


Code:

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

Play this puzzle online at the Daily Sudoku site
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

PostPosted: Sat Jun 06, 2009 3:22 pm    Post subject: Reply with quote

I needed two steps:
Quote:
w-wing 92
w-wing 19
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sun Jun 07, 2009 7:15 am    Post subject: Reply with quote

Code:
.------------------.------------------.------------------.
| 8     3     6    | 4     2     7    | 9     1     5    |
| 4     5     9    | 6     1     8    | 3     7     2    |
| 7     2     1    | 3     9     5    |*48    68   *46   |
:------------------+------------------+------------------:
| 12    9     3    | 128   5    *24   | 7     268  *46   |
| 5     6     8    | 129   7     249  | 14    29    3    |
| 12    7     4    | 1289  3     6    | 5     289   18   |
:------------------+------------------+------------------:
| 6     8     7    | 29    4     3    | 12    5     19   |
| 9     4     2    | 5     8     1    | 6     3     7    |
| 3     1     5    | 7     6    -29   |*28    4     89   |
'------------------'------------------'------------------'

(2=4)r4c6 - (4)r4c9 = (4)r3c9 - (4=8)r3c7 - (8=2)r9c7; r9c6 <> 2
these same cells form this xy-chain
28-84-46-64-42
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