dailysudoku.com Forum Index dailysudoku.com
Discussion of Daily Sudoku puzzles
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Set G Puzzle 35

 
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj
View previous topic :: View next topic  
Author Message
daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Wed Dec 17, 2008 6:53 am    Post subject: Set G Puzzle 35 Reply with quote

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

Play this puzzle online at the Daily Sudoku site
Back to top
View user's profile Send private message
tlanglet



Joined: 17 Oct 2007
Posts: 2461
Location: Northern California Foothills

PostPosted: Wed Dec 17, 2008 3:16 pm    Post subject: Reply with quote

Yet another "still going" type of puzzle! Never had to resort to more involved techniques but repeatedly had to review the entire puzzle to locate a deletion. My kind of puzzle.

My solution:
Quote:
multi-coloring <4>, xy-wing<245>, coloring <4>, xy-wing<278> plus a transport, kite <7> and finally a BUG+1
Ted
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Wed Dec 17, 2008 6:30 pm    Post subject: Reply with quote

tlanglet wrote:
Yet another "still going" type of puzzle! Never had to resort to more involved techniques but repeatedly had to review the entire puzzle to locate a deletion. My kind of puzzle.

This is how I'd hoped most people would find solutions to my puzzles. However, since I'm unable to check for every possible alternate solution, many find URs and Wings that I didn't know was present. This is okay though because I then use their solutions as a learning aid for myself.

I'm relieved at all of the positive responses.
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Wed Dec 17, 2008 8:55 pm    Post subject: Reply with quote

I've used a plethora of x-wings, xy-wings and a UR. I'm almost there with just one triple left <127> in R5C6. I always thought that when there was one triple left, there was always a Bug+1 - that is the xyz had to see the xy and yz. This triple doesn't. (and I'm stuck)
Back to top
View user's profile Send private message
nataraj



Joined: 03 Aug 2007
Posts: 1029
Location: Vienna, Austria

PostPosted: Wed Dec 17, 2008 9:48 pm    Post subject: Reply with quote

Hail Craig and all other sudoku addicts!

I'm back from a very long (luckily, we avoided Bangkok and went to S'pore instead Smile ) and very unexpected (it was like here tonight gone for three weeks tomorrow) trip, and what do I find: a comrade in distress ...

Could it be that this is your position?

Code:

+--------------------------+--------------------------+--------------------------+
| 5       3       6        | 8       12      12       | 7       4       9        |
| 8       9       47       | 3       5       47       | 1       2       6        |
| 27      24      1        | 47      9       6        | 8       5       3        |
+--------------------------+--------------------------+--------------------------+
| 6       1       8        | 5       24      9        | 3       7       24       |
| 9       5       47       | 12      3       127      | 6       8       24       |
| 27      24      3        | 67      46      8        | 9       1       5        |
+--------------------------+--------------------------+--------------------------+
| 3       8       2        | 9       7       5        | 4       6       1        |
| 1       6       9        | 24      8       24       | 5       3       7        |
| 4       7       5        | 16      16      3        | 2       9       8        |
+--------------------------+--------------------------+--------------------------+


At least that's what I came up with after don't know how many coloring and wing steps.

The BUG+1 says that 2 in r5c6 is the odd one out so r5c6=2.

(there is a w-wing that will remove 2 from r4c5 and solve the puzzle, too, I think, but I like the clean BUG+1 solution a lot.
Back to top
View user's profile Send private message Send e-mail Visit poster's website
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Wed Dec 17, 2008 10:14 pm    Post subject: Reply with quote

Nataraj: Glad to see you back home. Austria's a nice place. ("Put another shrimp on the Barbie Mate").
However - my point was that I thought for all Bug+1s the triple 127 had to see both 12 and a 27 or a 17 and a 21 or a 17 and a 27. This one doesn't so how do you know what the odd one out is.

Cheers
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5153
Location: Rochester, NY, USA

PostPosted: Wed Dec 17, 2008 10:23 pm    Post subject: Reply with quote

cgordon wrote:
Nataraj: Glad to see you back home. Austria's a nice place. ("Put another shrimp on the Barbie Mate").
However - my point was that I thought for all Bug+1s the triple 127 had to see both 12 and a 27 or a 17 and a 21 or a 17 and a 27. This one doesn't so how do you know what the odd one out is.

Cheers

I'm not from Austria, but...

The 2 is present three times in the box, column and row. If you removed it you'd have the DP of all bivalue cells, so the 2 has to be the one to kill the DP.
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Wed Dec 17, 2008 11:01 pm    Post subject: Reply with quote

Gotcha! It's nothing to do with xyz - just x seeing two other x's. As you can see I am a man of rote not logic.
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5153
Location: Rochester, NY, USA

PostPosted: Wed Dec 17, 2008 11:15 pm    Post subject: Reply with quote

Just for laughs, it also solves with a W-Wing on the 12 cells in r1c6 and r5c4.
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Wed Dec 17, 2008 11:24 pm    Post subject: Reply with quote

cgordon wrote:
Nataraj: Glad to see you back home. Austria's a nice place. ("Put another shrimp on the Barbie Mate").

Craig: I have a feeling that you have Austria and Australia confused.
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Wed Dec 17, 2008 11:28 pm    Post subject: Reply with quote

Marty R. wrote:
Just for laughs, it also solves with a W-Wing on the 12 cells in r1c6 and r5c4.

You folks are deadly with W-Wings, M-Wings, URs, and DPs. I post a puzzle that I think will make you work a bit, and you slip in one of these techniques and blow a hole in the difficulty level of my puzzle. Very Happy
Back to top
View user's profile Send private message
storm_norm



Joined: 18 Oct 2007
Posts: 1741

PostPosted: Wed Dec 17, 2008 11:39 pm    Post subject: Reply with quote

daj95376 wrote:
Marty R. wrote:
Just for laughs, it also solves with a W-Wing on the 12 cells in r1c6 and r5c4.

You folks are deadly with W-Wings, M-Wings, URs, and DPs. I post a puzzle that I think will make you work a bit, and you slip in one of these techniques and blow a hole in the difficulty level of my puzzle. Very Happy


wasn't Marty making a reference to the grid that Nataraj posted and not the grid after basics??
Back to top
View user's profile Send private message
Marty R.



Joined: 12 Feb 2006
Posts: 5153
Location: Rochester, NY, USA

PostPosted: Thu Dec 18, 2008 1:11 am    Post subject: Reply with quote

storm_norm wrote:
daj95376 wrote:
Marty R. wrote:
Just for laughs, it also solves with a W-Wing on the 12 cells in r1c6 and r5c4.

You folks are deadly with W-Wings, M-Wings, URs, and DPs. I post a puzzle that I think will make you work a bit, and you slip in one of these techniques and blow a hole in the difficulty level of my puzzle. Very Happy


wasn't Marty making a reference to the grid that Nataraj posted and not the grid after basics??

Yes, I was. I should have written that the W-Wing was just an alternative to the BUG+1.
Back to top
View user's profile Send private message
daj95376



Joined: 23 Aug 2008
Posts: 3855

PostPosted: Thu Dec 18, 2008 2:48 am    Post subject: Reply with quote

And I should have made it clearer that I was making a general statement. Embarassed
Back to top
View user's profile Send private message
cgordon



Joined: 04 May 2007
Posts: 769
Location: ontario, canada

PostPosted: Thu Dec 18, 2008 2:33 pm    Post subject: Reply with quote

Quote:
Craig: I have a feeling that you have Austria and Australia confused.

Sorry: It was a flippant reference to a line from a brilliant movie with Jim Carey when he is trying to pick up a lady at a bus stop.

Jim Carey: That's a lovely accent you have. New Jersey?
Lady at bus stop: Austria.
Jim Carey: Austria! Well, then. G'day mate! Let's put another shrimp on the barbie.

http://www.youtube.com/watch?v=9TAkbtaqN0o
Back to top
View user's profile Send private message
keith



Joined: 19 Sep 2005
Posts: 3162
Location: near Detroit, Michigan, USA

PostPosted: Fri Dec 19, 2008 2:02 am    Post subject: Reply with quote

The ending is a BUG+1:
Code:
+-------------+-------------+-------------+
| 5   3   6   | 8   12@ 12@ | 7   4   9   |
| 8   9   47C | 3   5   47B | 1   2   6   |
| 27 2-4  1   | 47  9   6   | 8   5   3   |
+-------------+-------------+-------------+
| 6   1   8   | 5   24a 9   | 3   7   24  |
| 9   5   47  | 12# 3   127 | 6   8   24  |
| 27  24c 3   | 67  46b 8   | 9   1   5   |
+-------------+-------------+-------------+
| 3   8   2   | 9   7   5   | 4   6   1   |
| 1   6   9   | 24# 8   24A | 5   3   7   |
| 4   7   5   | 16  16  3   | 2   9   8   |
+-------------+-------------+-------------+
But, A and a are a W-wing due to either of the links @ or #. Transporting (coloring) both the pincers abc, ABC, takes out <4> in R3C2.

(If you do not use a BUG+1, the solution is often not just a simple XY-wing or the like. Except, I have a contention that Medusa coloring will always solve a BUG+1.)

Keith
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    dailysudoku.com Forum Index -> Puzzles by daj All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group