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Clement
Joined: 24 Apr 2006
Posts: 1111
Location: Dar es Salaam Tanzania
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 Posted: Sun Oct 04, 2009 10:17 pm Post subject: Oct 5 VH |
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| UR-<69>r78c14 eliminates 7 in r1c4 solving the puzzle. |
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George Woods
Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK
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| Posted: Sun Oct 04, 2009 10:28 pm Post subject: Anotherearly solution on the 3rd move! |
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Once again this can be solved at a very early stage
| Quote: | After the 9 in BOX 4 and the 7 in Box 6 the two 47s
in boxes 3 and 9 create a W-Wing operating on the 4s
of col 9, denying a 7 in col 8 of Box 3, so r1c7=7.
To demonstrate this
Go to draw/play. "Sweep" exposes the 9 in box 4,
"sweep" once again exposes the 7 in box 6, and the
W-Wing is now apparent. Enter the 7 in box 3
and then "Grade". the The remainder of the puzzle is graded "Easy")
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Earl
Joined: 30 May 2007
Posts: 677
Location: Victoria, KS
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| Posted: Mon Oct 05, 2009 2:37 am Post subject: Oct 5 VH |
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There may be many routes, but old reliable comes through again.
A Solution: 247 xy-wing.
Earl |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Oct 05, 2009 3:39 am Post subject: |
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I looked around and saw four possibilities.
1) The UR
2) XY-Wing with pincer transport
3) W-Wing followed by a pincer transport
4) A DP on 78-68-67
I don't know if every one of those solves it though. |
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arkietech
Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA
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| Posted: Mon Oct 05, 2009 12:43 pm Post subject: |
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| Code: | *--------------------------------------------------*
| 2 9 1 | 78 478 5 | 47 6 3 |
| 8 5 6 | 3 47 9 | 1 247 24 |
| 3 4 7 | 1 2 6 | 5 8 9 |
|----------------+----------------+----------------|
| 4 1 9 | 68 68 2 | 3 5 7 |
| 5 8 2 | 4 3 7 | 6 9 1 |
| 7 6 3 | 5 9 1 | 24 24 8 |
|----------------+----------------+----------------|
| 69 27 45 | 679 567 3 | 8 1 24 |
| 69 27 8 | 69 1 4 | 27 3 5 |
| 1 3 45 | 2 57 8 | 9 47 6 |
*--------------------------------------------------*
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| Quote: | | 69URr78c14=>r7c4=7 singles follow |
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