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Daily Sudoku for 10/6/2016-Diabolical

 
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Clement



Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
PostPosted: Fri Jun 10, 2016 10:40 pm    Post subject: Daily Sudoku for 10/6/2016-Diabolical Reply with quote
Code:

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

Play this puzzle online at the Daily Sudoku site
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bat999



Joined: 09 Jul 2015
Posts: 55
Location: UK
PostPosted: Sat Jun 11, 2016 12:01 am    Post subject: Reply with quote
Code:
.-------------.------------------.-----------------.
| 5   237   1 |  379   247  b249 | 8    6    c49   |
| 6   237   4 |  379   127   8   | 137  279   5    |
| 78  2378  9 |  5     6    b124 | 137  247  c14   |
:-------------+------------------+-----------------:
| 3   5     2 |  1     9     6   | 4    8     7    |
| 4   1     7 |  2     8     5   | 6    39   c39   |
| 9   6     8 |  4     3     7   | 5    1     2    |
:-------------+------------------+-----------------:
| 2   9     6 | a78    5     3   | 17   47    14-8 |
| 1   78    5 |  6     24   b24  | 9    37   c38   |
| 78  4     3 |  789  a17   a19  | 2    5     6    |
'-------------'------------------'-----------------'
(8=9)r7c4,r9c56 - (9=1)r138c6 - (1=8)r1358c9 => -8 r7c9; stte
Cool
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Sat Jun 11, 2016 1:14 am    Post subject: Reply with quote
Code:

 +-----------+-------------+-------------+
 | 5  237  1 | 379 247 249 | 8   6   49  |
 | 6  237  4 | 379 127 8   | 137 279 5   |
 | 78 2378 9 | 5   6   124 | 137 247 14  |
 +-----------+-------------+-------------+
 | 3  5    2 | 1   9   6   | 4   8   7   |
 | 4  1    7 | 2   8   5   | 6   39  39  |
 | 9  6    8 | 4   3   7   | 5   1   2   |
 +-----------+-------------+-------------+
 | 2  9    6 | 78  5   3   | 17  47  148 |
 | 1  78   5 | 6   24  24  | 9   37  38  |
 | 78 4    3 | 789 17  19  | 2   5   6   |
 +-----------+-------------+-------------+

I found the following chain: (7=1)r9c5-r2c5=r3c6-r3c9=r7c9-(1=7)r7c7 => r7c4<>7 solves it.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jun 11, 2016 5:34 am    Post subject: Reply with quote
Code:

+-----------+-------------+-------------+
| 5  237  1 | 379 247 249 | 8   6   49  |
| 6  237  4 | 379 127 8   | 137 279 5   |
| 78 2378 9 | 5   6   124 | 137 247 14  |
+-----------+-------------+-------------+
| 3  5    2 | 1   9   6   | 4   8   7   |
| 4  1    7 | 2   8   5   | 6   39  39  |
| 9  6    8 | 4   3   7   | 5   1   2   |
+-----------+-------------+-------------+
| 2  9    6 | 78  5   3   | 17  47  148 |
| 1  78   5 | 6   24  24  | 9   37  38  |
| 78 4    3 | 789 17  19  | 2   5   6   |
+-----------+-------------+-------------+

Play this puzzle online at the Daily Sudoku site

Ur (24)r18c56 using internals

7r1c5=9r1c6-(9=4)r1c9-(4=18)r37c9-(8=7)r7c4=> -7r9c5
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Sat Jun 11, 2016 8:36 am    Post subject: Reply with quote
w-wing 17r7c7,r9c5,1r2 => -7r7c4; ste

Last edited by arkietech on Sat Jun 11, 2016 7:11 pm; edited 1 time in total
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jun 11, 2016 2:27 pm    Post subject: Reply with quote
arkietech wrote:
w-wing 17r7c7,r9c5,1r2 => -7r4c4; ste


Hey Dan nice to see you back home. Would you like to elucidate that elimination?
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dongrave



Joined: 06 Mar 2014
Posts: 568
PostPosted: Sat Jun 11, 2016 3:16 pm    Post subject: Reply with quote
He meant '-7r7c4' Marty. He used the same cells and numbers that I used in my chain. His idea is that either r2c5 or r2c7 is a 1 and if r2c5 is a 1, then r9c5 is a 7 and if r2c7 is 1, then r7c7 is a 7 so r7c4 cannot be 7!
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jun 11, 2016 3:55 pm    Post subject: Reply with quote
OK Don, thanks, I was asleep at the xx.
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Sat Jun 11, 2016 7:14 pm    Post subject: Reply with quote
Marty R. wrote:
arkietech wrote:
w-wing 17r7c7,r9c5,1r2 => -7r4c4; ste


Hey Dan nice to see you back home. Would you like to elucidate that elimination?


Back but not my typing Embarassed

Playing with showing patterns in a simple way.
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Sat Jun 11, 2016 10:52 pm    Post subject: Reply with quote
Quote:
Playing with showing patterns in a simple way.


Good idea. I think notation is not needed for XY, XYZ and W-Wings and Skyscrapers. Maybe use it for pincer transports.
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Sun Jun 12, 2016 2:41 pm    Post subject: Reply with quote
arkietech wrote:
w-wing 17r7c7,r9c5,1r2 => -7r7c4; ste


ww r7c7,r9c7,1r2 -7r7c4 ste

is simpler Confused
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Tue Jun 14, 2016 11:44 pm    Post subject: Reply with quote
Marty R. wrote:
Quote:
Playing with showing patterns in a simple way.


Good idea. I think notation is not needed for XY, XYZ and W-Wings and Skyscrapers. Maybe use it for pincer transports.

Well, for XY-wings we have the long-established XY-Z.

For example, XY, (pivot in) R1C5 16-4.

Keith
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Wed Jun 15, 2016 11:54 am    Post subject: Reply with quote
keith wrote:
Marty R. wrote:
Quote:
Playing with showing patterns in a simple way.


Good idea. I think notation is not needed for XY, XYZ and W-Wings and Skyscrapers. Maybe use it for pincer transports.

Well, for XY-wings we have the long-established XY-Z.

For example, XY, (pivot in) R1C5 16-4.

Keith


why not

XY R1C5 16-4 ste
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