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Clement
Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania
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 Posted: Sun Jan 23, 2011 10:11 pm Post subject: Jan 24 VH |
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| XY-Wing 67 27 26 pivoted in r3c2 eliminating 6 in r1c8 solves it. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Jan 24, 2011 4:41 am Post subject: |
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Couple of alternatives.
XY-Wing (278), pivoted in r3c2
XYZ-Wing (678), pivoted in r3c3 |
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cgordon
Joined: 04 May 2007
Posts: 769
Location: ontario, canada
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| Posted: Mon Jan 24, 2011 2:06 pm Post subject: |
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There was also an x wing on 9.
The hard bit for me was spotting the sextuplet in C3 (I guess you could also say it was a hidden pair 35). |
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Ema Nymton
Joined: 17 Apr 2009
Posts: 89
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| Posted: Tue Jan 25, 2011 2:58 am Post subject: |
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1/24/2011
Why a '4'?
| Code: |
+-------------+-----------------+----------+
| 5 3 B67 | 126 127 4 | 9 C26 8 |
| 248 9 468? | 268 5 26 | 7 1 3 |
| 1 A27 678 | 3 2789 2679 | 5 26* 4 |
+-------------+-----------------+----------+
| 249 1 3459 | 2469 2349 269 | 8 7 25 |
| 6 27 79 | 5 279 8 | 4 3 1 |
| 24 8 3457 | 124 12347 27 | 6 9 25 |
+-------------+-----------------+----------+
| 7 6 2 | 48 48 1 | 3 5 9 |
| 89 5 189 | 289 6 3 | 12 4 7 |
| 3 4 19 | 7 29 5 | 12 8 6 |
+-------------+-----------------+----------+
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The critical point for me was the r2c3= '4'. The ABC alignment not withstanding, the hidden '3/5' in column 3 was key.
Ema Nymton
~@:o?
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