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roaa
Joined: 18 Apr 2009
Posts: 112
Location: Sweden
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 Posted: Tue Oct 20, 2015 9:03 am Post subject: Oct 20 VH |
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| At least two XY-wings 349 solves it. |
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hughwill
Joined: 05 Apr 2010
Posts: 424
Location: Birmingham UK
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| Posted: Tue Oct 20, 2015 9:23 am Post subject: Re: Oct 20 VH |
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| Code: |
+--------+-------------+-----------+
| 4 5 8 | 2 6 39 | 1 39 7 |
| 6 1 3 | 78 78 49 | 5 2 49 |
| 9 7 2 | 1 34 5 | 34 6 8 |
+--------+-------------+-----------+
| 7 2 1 | 389 389 6 | 34 349 5 |
| 5 3 9 | 47 47 2 | 8 1 6 |
| 8 6 4 | 5 39 1 | 2 7 39 |
+--------+-------------+-----------+
| 3 4 7 | 6 1 8 | 9 5 2 |
| 2 89 6 | 349 5 349 | 7 348 1 |
| 1 89 5 | 349 2 7 | 6 348 34 |
+--------+-------------+-----------+
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Play this puzzle online at the Daily Sudoku site
| roaa wrote: | | At least two XY-wings 349 solves it. |
Three, if you count the unusual combo in boxes 3 and 6 as two.
Otherwise, no more interesting solutions...........?
Hugh |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Tue Oct 20, 2015 3:53 pm Post subject: |
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| Quote: | | Otherwise, no more interesting solutions...........? |
Some of us, including yours truly, like to solve these using only the standard VH moves, i.e. X- ,XY- and XYZ-wings.
However, departing from those moves, the DP 48-49-89 might qualify as interesting. To break up the DP, there needs to be a 3 in either r89c4 or r89c8. These two yield a common outcome. |
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