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Puzzle NR_062

 
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daj95376



Joined: 23 Aug 2008
Posts: 3854
PostPosted: Sun Jul 19, 2009 2:35 pm    Post subject: Puzzle NR_062 Reply with quote
Code:
 +-----------------------+
 | . . . | 2 . . | . . . |
 | . . 5 | . . 4 | 7 2 . |
 | . 2 9 | 5 . 7 | . . 1 |
 |-------+-------+-------|
 | 1 . 4 | 9 . 6 | 2 7 . |
 | . . . | . . . | 1 . . |
 | . 9 3 | 7 . 1 | 4 . . |
 |-------+-------+-------|
 | . 4 . | 6 7 3 | 5 . 2 |
 | . 3 . | 4 . . | . 1 . |
 | . . 6 | . . . | 3 . 4 |
 +-----------------------+

Play this puzzle online at the Daily Sudoku site
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sun Jul 19, 2009 11:09 pm    Post subject: Reply with quote
Code:
.---------------------.---------------------.---------------------.
|*346    16     7     | 2     *136    8     | 9     *3456   356   |
| 368    168    5     | 13     9      4     | 7      2      36    |
|*346    2      9     | 5     *36     7     | 8     *346    1     |
:---------------------+---------------------+---------------------:
| 1      58     4     | 9      358    6     | 2      7      358   |
| 25678  5678   28    | 38     4      25    | 1      356    9     |
| 2568   9      3     | 7      258    1     | 4      56     568   |
:---------------------+---------------------+---------------------:
| 89     4      1     | 6      7      3     | 5      89     2     |
| 2589   3      28    | 4      258    259   | 6      1      7     |
| 25789  578    6     | 18     1258   259   | 3      89     4     |
'---------------------'---------------------'---------------------'

the MUG like pattern marked, or otherwise known as the deadly pattern that Marty and others like to point out, says that the 1 in r1c5 or the (56) pair in r136c8 cannot both be false.

MUG346[(1)r1c5 = (56)r136c8] - (grp{56}=3)r5c8 - (3)r5c4 = (3)r2c4; r2c4 <> 1

Last edited by storm_norm on Mon Jul 20, 2009 7:35 am; edited 1 time in total
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arkietech



Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
PostPosted: Mon Jul 20, 2009 7:23 am    Post subject: Reply with quote
Code:
.---------------------.---------------------.---------------------.
|*346    16     7     | 2     *136    8     | 9     *3456   356   |
| 368    168    5     | 13     9      4     | 7      2      36    |
|*346    2      9     | 5     *36     7     | 8     *346    1     |
:---------------------+---------------------+---------------------:
| 1      58     4     | 9      358    6     | 2      7      358   |
| 25678  5678   28    | 38     4      25    | 1      356    9     |
| 2568   9      3     | 7      258    1     | 4      56     568   |
:---------------------+---------------------+---------------------:
| 89     4      1     | 6      7      3     | 5      89     2     |
| 2589   3      28    | 4      258    259   | 6      1      7     |
| 25789  578    6     | 18     1258   259   | 3      89     4     |
'---------------------'---------------------'---------------------'

Norm, Nice!
I see the mug where (1)r1c5 and (5)r1c8 are not both false
r1c5=1 r2c4<>1
r1c8=5 makes a 36 pair in row9 r4c9<>3 r5c8=3 r5c4<>3 r2c4=3 => r2c4<>1

I tried to code this in Eureka but had trouble. Help!
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
PostPosted: Wed Jul 22, 2009 1:27 am    Post subject: Reply with quote
So how come Marty didn't see that MUG? He used a couple of XYs, two ERs, Hidden UR, Skyscraper and Type 1 UR.
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