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Free Press Feb 26, 2010

 
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keith



Joined: 19 Sep 2005
Posts: 3344
Location: near Detroit, Michigan, USA

PostPosted: Sat Feb 27, 2010 3:43 pm    Post subject: Free Press Feb 26, 2010 Reply with quote

Not yet started.
Code:
Puzzle: FP022610
+-------+-------+-------+
| 7 . 1 | . . 3 | 8 . 9 |
| . . . | . . . | . . . |
| . 4 . | . . 8 | . 1 . |
+-------+-------+-------+
| 4 . . | . . . | . 2 5 |
| . . . | . . 9 | . . . |
| 1 8 . | . . . | . . 3 |
+-------+-------+-------+
| . 6 . | 5 . . | 3 4 . |
| . . . | . . . | . . . |
| 3 . 8 | 2 . . | 6 . 7 |
+-------+-------+-------+
Keith
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keith



Joined: 19 Sep 2005
Posts: 3344
Location: near Detroit, Michigan, USA

PostPosted: Sat Feb 27, 2010 8:42 pm    Post subject: Reply with quote

Classify as "unreasonable".

Keith
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Marty R.



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

PostPosted: Sat Feb 27, 2010 10:14 pm    Post subject: Reply with quote

keith wrote:
Classify as "unreasonable".

Keith

Concur 100%.
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keith



Joined: 19 Sep 2005
Posts: 3344
Location: near Detroit, Michigan, USA

PostPosted: Sat Feb 27, 2010 10:27 pm    Post subject: Reply with quote

After basics and an X-wing 6, and XY-wing 2 and an XYZ-wing 2:

Code:
+----------------------+----------------------+----------------------+
| 7      25     1      | 46     2456   3      | 8      56     9      |
| 8      259    2569   | 1679   125679 25     | 257    3      4      |
| 569    4      3      | 79     2579   8      | 257    1      26     |
+----------------------+----------------------+----------------------+
| 4      379    679    | 13678  13678  167    | 19     2      5      |
| 256    2357   257    | 1347   123457 9      | 14     78     68     |
| 1      8      25679  | 467    24567  25     | 49     67     3      |
+----------------------+----------------------+----------------------+
| 29     6      279    | 5      1789   17     | 3      4      128    |
| 259    1579   4      | 136789 136789 167    | 25     589    128    |
| 3      159    8      | 2      19     4      | 6      59     7      |
+----------------------+----------------------+----------------------+

To solve it, Sudoku Susser suggests two chains to eliminate 9 and then 1 in R8C2.

Keith
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Sat Feb 27, 2010 10:48 pm    Post subject: Reply with quote

Quote:
from keith's grid
als(29)[(5)r8c1 = (7)r7c3]r78c13 - (7=1)r7c6 - (1=9)r9c5 - (9=5)r9c8; r9c2 <> 5
to finish it
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daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Sat Feb 27, 2010 11:27 pm    Post subject: Reply with quote

[Withdrawn: redundant considering following posts.]

Last edited by daj95376 on Mon Mar 01, 2010 3:54 am; edited 1 time in total
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Sun Feb 28, 2010 3:39 pm    Post subject: Reply with quote

Two steps.

ALS279[(9)r7c13 = (7)r7c3]r7c13 - (7=1)r7c6 - (1=9)r9c5; r7c5|r9c2<>9,
AIC: (7=1)r8c2 - r9c2 = r9c5 - (1=7)r7c6; r7c3|r8c456<>7 completes the puzzle.

Ted
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nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

PostPosted: Sun Feb 28, 2010 9:54 pm    Post subject: Reply with quote

keith wrote:
Classify as "unreasonable".

Keith


Did I make an error in copying?

In Keith's grid:


Code:

+----------------------+----------------------+----------------------+
| 7      25     1      | 46     2456   3      | 8      56     9      |
| 8      259    2569   | 1679   125679 25     | 257    3      4      |
| 569    4      3      | 79     2579   8      | 257    1      26     |
+----------------------+----------------------+----------------------+
| 4      379    679    | 13678  13678  167    | 19     2      5      |
| 256    2357   257    | 1347   123457 9      | 14     78     68     |
| 1      8      25679  | 467    24567  25     | 49     67     3      |
+----------------------+----------------------+----------------------+
| 29     6      279#   | 5      1789   17*    | 3      4      128    |
| 259    1579#  4      | 136789 136789 167    | 25     589    128    |
| 3      159*   8      | 2     -19     4      | 6      59     7      |
+----------------------+----------------------+----------------------+


m-wing (1) r7c6=r9c2 using the SL on (7) in box 7
singles from there
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nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

PostPosted: Sun Feb 28, 2010 10:01 pm    Post subject: Reply with quote

I re-did the puzzle from the start.
Seems like the m-wing was there right after basics

no other steps are needed.
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keith



Joined: 19 Sep 2005
Posts: 3344
Location: near Detroit, Michigan, USA

PostPosted: Sun Feb 28, 2010 10:49 pm    Post subject: Reply with quote

Nataraj,

nataraj wrote:
I re-did the puzzle from the start.
Seems like the m-wing was there right after basics

no other steps are needed.


It's even better than that! From the very start (forget about basics):

Step 1: R8C3 = 4
Step 2: M-wing takes out 1 in R9C56

The puzzle is done!

If we had an Oscar for the best solution of the year, this would be my nomination! Congratulations!

Keith
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills

PostPosted: Mon Mar 01, 2010 3:33 am    Post subject: Reply with quote

nataraj wrote:

m-wing (1) r7c6=r9c2 using the SL on (7) in box 7
singles from there


Nataraj,

I find it interesting that your m-wing generally involved many of the same cells as I used in an ALS. You also used digits 1 & 7, whereas I started with 7 & 9 but used 1 as part of transport action. In any case, it seemed we were both in the area where the action was, but I needed another step.

Great move Exclamation

Ted
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nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

PostPosted: Mon Mar 01, 2010 6:50 am    Post subject: Reply with quote

keith wrote:
Nataraj,

nataraj wrote:
I re-did the puzzle from the start.
Seems like the m-wing was there right after basics

no other steps are needed.


It's even better than that! From the very start (forget about basics):

Step 1: R8C3 = 4
Step 2: M-wing takes out 1 in R9C56

The puzzle is done!

If we had an Oscar for the best solution of the year, this would be my nomination! Congratulations!

Keith


LOL, not even basics ...

Thanks for the nomination, Keith, but don't think that this lucky coincidence would qualify for "best". I never start looking for any type of wings until I'm done with basics - and ... I am not even a member of the "one-shot hunting team" Wink

Of, course, finding a golden nugget even by chance is still a nice find Smile

Nataraj
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