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Competition Diabolical #1232 Nov 23

 
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nataraj



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

PostPosted: Sun Nov 23, 2008 7:30 pm    Post subject: Competition Diabolical #1232 Nov 23 Reply with quote

Code:

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

play online

Hint: There is a generalized m-wing
(1)r9c1=r6c3 (using SL (4) in row 2); r5c1<>1
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Mon Nov 24, 2008 8:07 pm    Post subject: Reply with quote

Code:
.---------------------.---------------------.---------------------.
| 6      2      78    | 578    58     3     | 1      9      4     |
| 147    1378   1478  | 9      18     6     | 37     5      2     |
| 5      137    9     | 1247   124    1247  | 367    67     8     |
:---------------------+---------------------+---------------------:
| 2      5      6     | 48     7      9     | 48     1      3     |
| 17     4      3     | 56     56     18    | 78     2      9     |
| 8      9      17    | 124    3      124   | 5      47     6     |
:---------------------+---------------------+---------------------:
| 3      18     5     | 1246   12469  124   | 2469   468    7     |
| 9      78     478   | 3      246    5     | 246    468    1     |
| 14     6      2     | 1478   1489   1478  | 49     3      5     |
'---------------------'---------------------'---------------------'

Quote:
(1=4)r9c1 - (4)r8c3 = (4-1)r2c3 = (1)r2c1; r5c1 <> 1
nice one nataraj. a one stepper!
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re'born



Joined: 28 Oct 2007
Posts: 80

PostPosted: Tue Nov 25, 2008 4:15 am    Post subject: Reply with quote

storm_norm wrote:

Quote:
(1=4)r9c1 - (4)r8c3 = (4-1)r2c3 = (1)r2c1; r5c1 <> 1


Would you explain your last link:
Quote:
(1)r2c3=r2c1
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storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Tue Nov 25, 2008 6:35 am    Post subject: Reply with quote

re'born wrote:
storm_norm wrote:

Quote:
(1=4)r9c1 - (4)r8c3 = (4-1)r2c3 = (1)r2c1; r5c1 <> 1


Would you explain your last link:
Quote:
(1)r2c3=r2c1


oh my, that is not looking good. I think I had that backwards.

should be (1=4)r9c1- (4)r2c1 = (4-1)r2c3 = (1)r6c3; r5c1 <> 1

or it could be (1=4)r9c1 - (4)r8c3 = (4-1)r2c3 = (1)r6c3; r5c1 <>1

thanx, Re'born
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re'born



Joined: 28 Oct 2007
Posts: 80

PostPosted: Tue Nov 25, 2008 2:22 pm    Post subject: Reply with quote

storm_norm wrote:


oh my, that is not looking good. I think I had that backwards.

should be (1=4)r9c1- (4)r2c1 = (4-1)r2c3 = (1)r6c3; r5c1 <> 1

or it could be (1=4)r9c1 - (4)r8c3 = (4-1)r2c3 = (1)r6c3; r5c1 <>1

thanx, Re'born


Ah, thank you. I should have seen it after your first 'chain'. Very elegant solution.
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