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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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 Posted: Thu Jun 28, 2007 1:32 pm Post subject: Stumped |
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Can any one see a possible next move on this puzzle?
The "Hint" under "play/show" says "too difficult."
Earl
| Code: |
+-------+-------+-------+
| . 2 4 | 3 . 9 | 1 . . |
| 3 8 . | 4 1 . | . 9 2 |
| . 1 9 | . . 5 | . . 4 |
+-------+-------+-------+
| 9 7 . | . . 1 | . 4 . |
| 1 5 . | 8 . 4 | . 7 6 |
| . 4 . | 7 . 2 | . 1 3 |
+-------+-------+-------+
| 4 3 . | 9 . . | . 2 . |
| 2 6 . | . 4 . | . . 9 |
| . 9 7 | . . 3 | 4 6 . |
+-------+-------+-------+
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Play this puzzle online at the Daily Sudoku site |
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Myth Jellies
Joined: 27 Jun 2006
Posts: 64
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| Posted: Thu Jun 28, 2007 3:05 pm Post subject: |
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| An X-wing on 7's, then in one of the affected columns lurks a hidden triple. |
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TKiel
Joined: 22 Feb 2006
Posts: 292
Location: Kalamazoo, MI
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| Posted: Thu Jun 28, 2007 10:26 pm Post subject: |
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| Or, with a nod to the thread about complementary sets and different ways of seeing things, a naked quad. |
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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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| Posted: Fri Jun 29, 2007 2:19 am Post subject: Stumped |
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Thanks for the hep.
I got his far.
Any further help?
Earl
| Code: |
+-----------+-------------+---------------+
| 567 2 4 | 3 678 9 | 1 58 578 |
| 3 8 56 | 4 1 67 | 567 9 2 |
| 67 1 9 | 26 2678 5 | 368 38 4 |
+-----------+-------------+---------------+
| 9 7 23 | 56 356 1 | 258 4 58 |
| 1 5 23 | 8 39 4 | 29 7 6 |
| 68 4 68 | 7 59 2 | 59 1 3 |
+-----------+-------------+---------------+
| 4 3 158 | 9 67 68 | 58 2 1578 |
| 2 6 158 | 15 4 78 | 3578 358 9 |
| 58 9 7 | 125 25 3 | 4 6 158 |
+-----------+-------------+---------------+
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Play this puzzle online at the Daily Sudoku site |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Fri Jun 29, 2007 4:28 am Post subject: Re: Stumped |
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| Earl wrote: | Thanks for the hep.
I got his far.
Any further help?
Earl
| Code: |
+-----------+-------------+---------------+
| 567 2 4 | 3 678 9 | 1 58 578 |
| 3 8 56 | 4 1 67 | 567 9 2 |
| 67 1 9 | 26 2678 5 | 368 38 4 |
+-----------+-------------+---------------+
| 9 7 23 | 56 356 1 | 258 4 58 |
| 1 5 23 | 8 39 4 | 29 7 6 |
| 68 4 68 | 7 59 2 | 59 1 3 |
+-----------+-------------+---------------+
| 4 3 158 | 9 67 68 | 58 2 1578 |
| 2 6 158 | 15 4 78 | 3578 358 9 |
| 58 9 7 | 125 25 3 | 4 6 158 |
+-----------+-------------+---------------+
|
Play this puzzle online at the Daily Sudoku site |
There's a skyscraper on 5 in columns 1 and 8 which will take out a 5 in boxes 7 and 9. That exposes a 185 XY-Wing based in r8c3 and a W-Wing on the 18s in boxes 7 and 9. |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Fri Jun 29, 2007 6:27 am Post subject: Complement |
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Earl just in case you missed it first time, you need to look at Myth's Hidden Triple or the easier to see naked quad (column 7) which is, as Tracy points out, the complement of the hidden triple.
The quad contains {2,5,8,9} which makes other eliminations in column 7 which will leave a single 5 in row 2 and after that it is easy. |
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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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| Posted: Fri Jun 29, 2007 3:56 pm Post subject: stumpted |
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Thanks for all the help.
I also found a w-wing of 67's in boxes 1 and 2.
And "Hint" said it was too difficult.
Not for you guys.
Earl |
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