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Set XY_01 Puzzle 27

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Apr 01, 2009 3:46 am    Post subject: Set XY_01 Puzzle 27 Reply with quote
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Code:
 +-----------------------+
 | . . . | 4 . 1 | . . . |
 | . 9 . | 6 2 . | . . . |
 | . . . | . 3 5 | . . 1 |
 |-------+-------+-------|
 | 5 6 . | . . . | 3 . 7 |
 | . 3 7 | . . 4 | . 1 6 |
 | 1 . 9 | . 6 . | 4 2 . |
 |-------+-------+-------|
 | . . . | 5 . 9 | . 7 . |
 | . . . | . 7 6 | 1 . . |
 | . . 6 | 3 1 . | . . 9 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Wed Apr 01, 2009 2:37 pm    Post subject: Reply with quote
Danny, you seem to be on a real BBDB roll, and this is another example. For me it was another eight step puzzle with a mixture of techniques. No one move was spectacular, but all were fun.

Ted Very Happy
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Wed Apr 01, 2009 3:34 pm    Post subject: Reply with quote
tlanglet wrote:
Danny, you seem to be on a real BBDB roll, and this is another example. For me it was another eight step puzzle with a mixture of techniques. No one move was spectacular, but all were fun.

Ted, I try to pick puzzles that need several steps while keeping those steps realistic for the difficulty level shown. Sometimes people find that not all of my steps are necessary, and other times they don't catch an important step and are forced to find a way around.

Bottom Line: I hope everyone is happy working my puzzles! For sure, if there is a question, or problem, or someone wants to see my solution, I'd be happy to reply through the forum or through a private message (pm).

Regards, Danny
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Wed Apr 01, 2009 10:42 pm    Post subject: Reply with quote
up to my same old tricks,
just starting from a strong pair as Danny pointed out before...
and working the chain from the middle out.
Code:
.------------------.------------------.------------------.
| 3678  257   2358 | 4     89    1    | 2789  3689  238  |
| 348   9     1    | 6     2     7    |E58    3458  348  |
| 4678  247  A28   |H89    3     5    | 2789  4689  1    |
:------------------+------------------+------------------:
| 5     6     4    | 1     89    2    | 3     89    7    |
| 2     3     7    |G89    5     4    |F89    1     6    |
| 1     8     9    | 7     6     3    | 4     2     5    |
:------------------+------------------+------------------:
| 38    1    B238  | 5     4     9    | 6     7     238  |
| 9     45    358  | 2     7     6    | 1     3458  348  |
| 47   C2457  6    | 3     1     8    |D25    45    9    |
'------------------'------------------'------------------'

using the strong link in 2's in box 7, seeing the {2,8} cell at A and the {2,5} cell at D and working out from there.
(8=2)A - (2)B = (2)C - (2=5)D - (5=8}E - (8}F = (8}G; H is not 8

Code:
.------------------.------------------.------------------.
| 6     257   235  | 4     8     1    | 27    9    A23   |
|E38    9     1    | 6     2     7    | 58   F345  G348  |
| 47    247  D28   | 9     3     5    | 278   6     1    |
:------------------+------------------+------------------:
| 5     6     4    | 1     9     2    | 3     8     7    |
| 2     3     7    | 8     5     4    | 9     1     6    |
| 1     8     9    | 7     6     3    | 4     2     5    |
:------------------+------------------+------------------:
| 38    1    C238  | 5     4     9    | 6     7    B238  |
| 9     45    358  | 2     7     6    | 1     345   348  |
| 47    2457  6    | 3     1     8    | 25    45    9    |
'------------------'------------------'------------------'

using the strong links on 2 in row 7... which see the {2,3} cell at A and the {2,8} cell at D. extends to E.
(3=2)A - (2)B = (2)C - (2=8}D - (8=3)E; both F and G is not 3.
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Thu Apr 02, 2009 1:10 pm    Post subject: Reply with quote
Both moves are great Norm!

Ted
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Apr 04, 2009 6:22 pm    Post subject: Reply with quote
Remote pairs twice with 89s, an ER on 2, XY-Wing on 457, XYZ-Wing on 238 and an M-Wing on 27.
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sat Apr 04, 2009 11:23 pm    Post subject: Reply with quote
tlanglet wrote:
Both moves are great Norm!

Ted


thank you, Ted
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