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Clement
Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania
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 Posted: Wed Sep 14, 2016 8:18 am Post subject: Sep 14 VH |
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| Code: |
+------------+--------+------------+
| 47 1 6 | 3 2 48 | 58 9 57 |
| 8 3 27 | 5 9 1 | 6 27 4 |
| 5 9 24 | 7 6 48 | 3 28 1 |
+------------+--------+------------+
| 3 4 5 | 1 7 2 | 9 6 8 |
| 27 6 9 | 8 3 5 | 4 1 27 |
| 1 27 8 | 9 4 6 | 25 37 2357 |
+------------+--------+------------+
| 9 5 1 | 2 8 3 | 7 4 6 |
| 6 28 3 | 4 1 7 | 28 5 9 |
| 247 278 47 | 6 5 9 | 1 38 23 |
+------------+--------+------------+
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XY-Wing 27-5 pivoted in r5c9; r1c7, r6c9 <> 5; stte |
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hughwill
Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK
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| Posted: Wed Sep 14, 2016 10:01 am Post subject: Sep 14 VH |
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| Code: |
+------------+--------+------------+
| 47 1 6 | 3 2 48 | 58 9 57 |
| 8 3 27 | 5 9 1 | 6 27 4 |
| 5 9 24 | 7 6 48 | 3 28 1 |
+------------+--------+------------+
| 3 4 5 | 1 7 2 | 9 6 8 |
| 27 6 9 | 8 3 5 | 4 1 27 |
| 1 27 8 | 9 4 6 | 25 37 2357 |
+------------+--------+------------+
| 9 5 1 | 2 8 3 | 7 4 6 |
| 6 28 3 | 4 1 7 | 28 5 9 |
| 247 278 47 | 6 5 9 | 1 38 23 |
+------------+--------+------------+
|
Play this puzzle online at the Daily Sudoku site
Clement said: | Quote: | | XY-Wing 27-5 pivoted in r5c9; r1c7, r6c9 <> 5; stte |
Or 24-7 XYZ wing pivot r9c1: r2c6=7: stte (Easiest basics for a long time...)
Hugh |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Sep 14, 2016 12:45 pm Post subject: Re: Sep 14 VH |
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| hughwill wrote: | | Code: |
+------------+--------+------------+
| 47 1 6 | 3 2 48 | 58 9 57 |
| 8 3 27 | 5 9 1 | 6 27 4 |
| 5 9 24 | 7 6 48 | 3 28 1 |
+------------+--------+------------+
| 3 4 5 | 1 7 2 | 9 6 8 |
| 27 6 9 | 8 3 5 | 4 1 27 |
| 1 27 8 | 9 4 6 | 25 37 2357 |
+------------+--------+------------+
| 9 5 1 | 2 8 3 | 7 4 6 |
| 6 28 3 | 4 1 7 | 28 5 9 |
| 247 278 47 | 6 5 9 | 1 38 23 |
+------------+--------+------------+
|
Play this puzzle online at the Daily Sudoku site
Clement said: | Quote: | | XY-Wing 27-5 pivoted in r5c9; r1c7, r6c9 <> 5; stte |
Or 24-7 XYZ wing pivot r9c1: r2c6=7: stte (Easiest basics for a long time...)
Hugh |
Sorry, Hugh, I don't see it. I don't see a 7 in r2c6. For there to be an elimination, there needs to be one or more cells that see all three of XYZ, XZ and YZ. Those cells would need to be r78c1. |
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hughwill
Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK
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| Posted: Wed Sep 14, 2016 2:13 pm Post subject: |
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| Marty - As always absolutely right. I was looking at r6c2 but the 247 arrangement doesn't affect that or anything else! |
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Stanley P
Joined: 27 Feb 2008
Posts: 20
Location: Tennessee, USA
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| Posted: Wed Sep 14, 2016 2:47 pm Post subject: |
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| I used the XY-Wing 27-3 pivoted in R5C9. That appeared to get me to the end. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Wed Sep 14, 2016 3:13 pm Post subject: |
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| Stanley P wrote: | | I used the XY-Wing 27-3 pivoted in R5C9. That appeared to get me to the end. |
That's very interesting, one cell being a pivot for two XY-WIngs. |
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