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Victor
Joined: 29 Sep 2005
Posts: 207
Location: NI
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 Posted: Tue Mar 18, 2008 4:14 pm Post subject: Press the remote |
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M4292743 (81)
| Code: |
+-------+-------+-------+
| . . . | . . . | 1 . 9 |
| 7 . 4 | . 1 . | . . 2 |
| . 9 8 | . . 6 | . . . |
+-------+-------+-------+
| . 7 1 | . . 9 | . . . |
| . . 3 | . 8 4 | . . . |
| . . . | 1 . . | . 5 . |
+-------+-------+-------+
| 8 . 6 | 3 . . | . . 5 |
| . 2 . | . . . | 9 . . |
| . . . | 4 6 . | . . . |
+-------+-------+-------+
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Play this puzzle online
Mostly good fun - bit harder than a VH (skyscraper etc.), but with a sting in the tail. |
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ravel
Joined: 21 Apr 2006
Posts: 536
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| Posted: Tue Mar 18, 2008 6:20 pm Post subject: |
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Nice puzzle.
Normally i would call it a ..wing with transport. But i spotted it this way:
On the one hand i had
Either A=x or B=x
On the other hand i saw
Either A=y or B=x
So B is pinned to x. |
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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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| Posted: Wed Mar 19, 2008 5:17 pm Post subject: hard plus |
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There is a w-wing (25) that apparently does nothing, but one arm can be extended by coloring which then eliminates the 5's in the bottom row of box 7 and opens the puzzle.
Earl |
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Steve R
Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England
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| Posted: Wed Mar 19, 2008 9:07 pm Post subject: |
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In this position:
| Code: | +----------------------------------------------+
| 256 356 25 | 57 34 578 | 1 3468 9 |
| 7 356 4 | 9 1 58 | 368 368 2 |
| 1 9 8 | 2 34 6 | 5 47 347 |
------------------------------------------------
| 245 7 1 | 56 25 9 | 238+4 238+6 38+6 |
| 256 56 3 | 567 8 4 | 27 9 1 |
| 2469 8 29 | 1 27 3 | 46 5 67 |
------------------------------------------------
| 8 4 6 | 3 9 27 | 27 1 5 |
| 3 2 57 | 8 7 1 | 9 46 46 |
| 59 1 579 | 4 6 25 | 238 238+7 38+7 |
+----------------------------------------------+ |
I happened to notice a MUG in r49c789.. It eliminates 2 from r49c7 because, if the bottom line contains 7, r7c7 contains 2 while, if the top line contains 4 or 6, r5c7 contains 2.
The eliminations do not seem to be useful but these patterns are thought to be rare. It is surprising to find another so soon.
Steve |
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ravel
Joined: 21 Apr 2006
Posts: 536
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| Posted: Thu Mar 20, 2008 10:12 am Post subject: |
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Well spotted, Steve R,
you can see the eliminations directly, because out of 238 you can only find the 2 in r57c7 outside the MUG in the 2 boxes. One of them must be true (but of course its a naked pair 27 anyway). |
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