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Set H Puzzle 83 -- VH+AE

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Tue Jan 13, 2009 11:50 pm    Post subject: Set H Puzzle 83 -- VH+AE Reply with quote

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

Play this puzzle online at the Daily Sudoku site

===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== ===== =====

Can be solved using steps from ...

Basics: Naked/Hidden Single, Naked Pair/Triple, Locked Candidate 1/2

Basics+: Naked Quad, Hidden Pair/Triple/Quad

VH: BUG+1, Remote Pair, UR Type 1, X-Wing, XY-Wing

Advanced: 2-String Kite, Empty Rectangle, Skyscraper, UR Type 2, XYZ-Wing

Extreme: finned X-Wing, Multiple Colors, M-Wing, W-Wing, XY-Chain

VH+AE: multi-step VH plus one Advanced and/or one Extreme step.

Extreme+: Swordfish, Jellyfish, (but mostly) Chain
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Wed Jan 14, 2009 5:15 am    Post subject: Reply with quote

Quote:
VH+AE: multi-step VH plus one Advanced and/or one Extreme step.

I certainly didn't use any Extreme steps.

Quote:
XY-Wing (234), ERs (3, 2, 3), Multi-coloring (4), Type 1 UR (67) and XY-Wing (142)
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daj95376



Joined: 23 Aug 2008
Posts: 3854

PostPosted: Wed Jan 14, 2009 6:27 am    Post subject: Reply with quote

Marty R. wrote:
I certainly didn't use any Extreme steps.

You might want to double-check Multiple Colors category.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Wed Jan 14, 2009 6:36 am    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 5      8      24    | 2349   34     2349  | 1      6      7     |
| 17     6      17    | 24     5      8     | 3      9      24    |
| 234    234    9     | 7      16     16    | 5      8      24    |
:---------------------+---------------------+---------------------:
| 1236   123    8     | 5      7      136   | 9      4      13    |
| 13467  13479  1347  | 8      2      13469 | 67     5      13    |
| 13467  13479  5     | 349    16     13469 | 67     2      8     |
:---------------------+---------------------+---------------------:
| 23     5      6     | 1      34     234   | 8      7      9     |
| 8      14     14    | 6      9      7     | 2      3      5     |
| 9      237    237   | 23     8      5     | 4      1      6     |
'---------------------'---------------------'---------------------'

step 1...multi-coloring {2}... r7c6 = r1c6 - r1c3 = r9c3; r9c4|r7c1 <> 2
some singles.
step 2... (4=1)r8c2 - (1=2)r4c2 - (2)r9c2 = (2)r9c3 - (2=4)r1c3; r8c3 <> 4.
singles.
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