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Aug 16 VH

 
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hughwill



Joined: 05 Apr 2010
Posts: 413
Location: Birmingham UK

PostPosted: Tue Aug 16, 2016 9:18 am    Post subject: Aug 16 VH Reply with quote

After basics (Though some may have been missed):
Code:

+----------------+---------------+---------------+
| 9   1367 136   | 2   17   5    | 8   13   4    |
| 2   8    14    | 39  1479 1349 | 6   5    179  |
| 347 5    134   | 6   1479 8    | 379 2    1379 |
+----------------+---------------+---------------+
| 36  136  7     | 89  1289 129  | 4   1369 5    |
| 5   2    19    | 4   3    6    | 79  8    179  |
| 8   1346 13469 | 7   5    19   | 2   1369 139  |
+----------------+---------------+---------------+
| 367 3679 8     | 1   269  239  | 5   4    2    |
| 34  349  5     | 389 2489 2349 | 1   7    6    |
| 1   46   2     | 5   46   7    | 39  39   8    |
+----------------+---------------+---------------+

Play this puzzle online at the Daily Sudoku site

Couldn't find anything better than 34-6 XY-Wing pivot r8c1 followed (after
a bunch of basics some of which may not be needed) by successive X-Wings
on 3 and 1 both on r14, the second of which could also be done through a type
1 UR. Complicated without being very satisfying....
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the_lock_man



Joined: 18 Dec 2012
Posts: 36
Location: Portsmarfff, UK

PostPosted: Tue Aug 16, 2016 12:30 pm    Post subject: Re: Aug 16 VH Reply with quote

hughwill wrote:
After basics (Though some may have been missed):
Code:

+----------------+---------------+---------------+
| 9   1367 136   | 2   17   5    | 8   13   4    |
| 2   8    14    | 39  1479 1349 | 6   5    179  |
| 347 5    134   | 6   1479 8    | 379 2    1379 |
+----------------+---------------+---------------+
| 36  136  7     | 89  1289 129  | 4   1369 5    |
| 5   2    19    | 4   3    6    | 79  8    179  |
| 8   1346 13469 | 7   5    19   | 2   1369 139  |
+----------------+---------------+---------------+
| 367 3679 8     | 1   269  239  | 5   4    2    |
| 34  349  5     | 389 2489 2349 | 1   7    6    |
| 1   46   2     | 5   46   7    | 39  39   8    |
+----------------+---------------+---------------+

Play this puzzle online at the Daily Sudoku site

Couldn't find anything better than 34-6 XY-Wing pivot r8c1 followed (after
a bunch of basics some of which may not be needed) by successive X-Wings
on 3 and 1 both on r14, the second of which could also be done through a type
1 UR. Complicated without being very satisfying....


Definitely some basics missing, Hugh. There's a 2 in R7C56, which can't be there, due to the 2 in R7C9. This then gives you a hidden pair 28 in C5, but I'm not actually certain if this contributed to me solving the puzzle or not.

I found the XY wing you refer to (possibly plus some other basics) opened up a W-Wing 19 in boxes 4 & 5, with a strong link on 1 in C9, meaning R6C3 <>9. From there, it's STTE.
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Marty R.



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

PostPosted: Tue Aug 16, 2016 1:16 pm    Post subject: Reply with quote

The XY-Wing and the X-Wing on 3 did it for me.
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

PostPosted: Tue Aug 16, 2016 1:43 pm    Post subject: Reply with quote

13 Singles
1-Fish{3B2, 3B9, 9B9, 9C3} -> -{3rr2c39, 3r9c2, 9r9c25, 9r46c2}
Code:
+---------------------+-----------------+--------------------+
| 9    367(1)  36-1   | 2    7-1   5    | 8    3(1)    4     |
| 2    8       14     | 39   1479  1349 | 6    5       179   |
| 347  5       134    | 6    1479  8    | 379  2       1379  |
+---------------------+-----------------+--------------------+
| 36   36(1)   7      | 89   1289  129  | 4    369(1)  5     |
| 5    2       9(1)   | 4    3     6    | 79   8       79(1) |
| 8    346(1)  3469-1 | 7    5     19   | 2    369(1)  39-1  |
+---------------------+-----------------+--------------------+
| 367  3679    8      | 1    69    39   | 5    4       2     |
| 34   349     5      | 389  2489  2349 | 1    7       6     |
| 1    46      2      | 5    46    7    | 39   39      8     |
+---------------------+-----------------+--------------------+
3-Fish{1C2, 1R5, 1C8} -> -{1r1c35, 1r6c39}; stte

or
Code:
+--------------------+--------------------+-----------------+
| 9      1367  136   | 2    17     5      | 8    13    4    |
| 2      8     1-4   | 39   1479   139(4) | 6    5     179  |
| 37(4)  5     134   | 6    179-4  8      | 379  2     1379 |
+--------------------+--------------------+-----------------+
| 36     136   7     | 89   1289   129    | 4    1369  5    |
| 5      2     19    | 4    3      6      | 79   8     179  |
| 8      1346  13469 | 7    5      19     | 2    1369  139  |
+--------------------+--------------------+-----------------+
| 367    3679  8     | 1    69     39     | 5    4     2    |
| 3(4)   349   5     | 389  2489   239(4) | 1    7     6    |
| 1      46    2     | 5    46     7      | 39   39    8    |
+--------------------+--------------------+-----------------+
2-Fish{4C16} -> -{4r2c3, 4r3c5}; stte
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yeoks



Joined: 16 May 2010
Posts: 33

PostPosted: Tue Aug 16, 2016 2:05 pm    Post subject: Reply with quote

Code:

+----------------+---------------+---------------+
| 9   1367 136   | 2   17   5    | 8   13   4    |
| 2   8    14    | 39  1479 1349 | 6   5    179  |
| 347 5    134   | 6   1479 8    | 379 2    1379 |
+----------------+---------------+---------------+
| 36  136  7     | 89  1289 129  | 4   1369 5    |
| 5   2    19    | 4   3    6    | 79  8    179  |
| 8   1346 13469 | 7   5    19   | 2   1369 139  |
+----------------+---------------+---------------+
| 367 3679 8     | 1   69   39   | 5   4    2    |
| 34  349  5     | 389 2489 2349 | 1   7    6    |
| 1   46   2     | 5   46   7    | 39  39   8    |
+----------------+---------------+---------------+

Play this puzzle online at the Daily Sudoku site

Skyscraper 4 on C16; r2c3<>4; stte.
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Ema Nymton



Joined: 17 Apr 2009
Posts: 89

PostPosted: Sun Aug 21, 2016 2:19 pm    Post subject: Stumped Reply with quote

Code:

+---------------+---------------+--------------+
| 9   137  6    | 2   17   5    | 8   13  4    |
| 2   8    14   | 39  1479 349  | 6   5   179  |
| 347 5    134  | 6   1479 8    | 379 2   1379 |
+---------------+---------------+--------------+
| 6   13   7    | 89  28   129  | 4   139 5    |
| 5   2    19   | 4   3    6    | 79  8   179  |
| 8   134  1349 | 7   5    19   | 2   6   139  |
+---------------+---------------+--------------+
| 37  3679 8    | 1   69   39   | 5   4   2    |
| 34  349  5    | 389 28   2349 | 1   7   6    |
| 1   46   2    | 5   46   7    | 39  39  8    |
+---------------+---------------+--------------+

Play this puzzle online at the Daily Sudoku site

Stumped. I must be overlooking something. But what?

Please help.

Thanx in advance.

Ema Nymton
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Marty R.



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

PostPosted: Sun Aug 21, 2016 4:43 pm    Post subject: Re: Stumped Reply with quote

Ema Nymton wrote:
Code:

+---------------+---------------+--------------+
| 9   137  6    | 2   17   5    | 8   13  4    |
| 2   8    14   | 39  1479 349  | 6   5   179  |
| 347 5    134  | 6   1479 8    | 379 2   1379 |
+---------------+---------------+--------------+
| 6   13   7    | 89  28   129  | 4   139 5    |
| 5   2    19   | 4   3    6    | 79  8   179  |
| 8   134  1349 | 7   5    19   | 2   6   139  |
+---------------+---------------+--------------+
| 37  3679 8    | 1   69   39   | 5   4   2    |
| 34  349  5    | 389 28   2349 | 1   7   6    |
| 1   46   2    | 5   46   7    | 39  39  8    |
+---------------+---------------+--------------+

Play this puzzle online at the Daily Sudoku site

Stumped. I must be overlooking something. But what?

Please help.

Thanx in advance.

Ema Nymton


Hello Ema,

Your grid shows that r4c1 is solved for 6, but that cell should be 36. The 36 enables the 36-4 XY-Wing which is a good first step.
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