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roaa
Joined: 18 Apr 2009
Posts: 112
Location: Sweden
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 Posted: Mon Feb 23, 2015 2:16 pm Post subject: Feb 23 VH |
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| An X-wing on 5 leads to r1c6=5, which solves it. |
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Lee
Joined: 10 Jun 2014
Posts: 24
Location: San Francisco
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| Posted: Mon Feb 23, 2015 3:43 pm Post subject: |
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I think you made a typo.
r1c6 = 3
after x-wing on 5 in columns 3 and 9.
which solves it.
| Code: |
+-------------+-----------+-------------+
| 2 4589 59 | 346 1 35 | 7 68 45 |
| 6 457 57 | 2 9 8 | 34 1 345 |
| 1 458 3 | 467 67 57 | 9 68 2 |
+-------------+-----------+-------------+
| 4 1 79 | 379 5 37 | 8 2 6 |
| 359 579 2 | 1 8 6 | 34 457 3479 |
| 359 6 8 | 379 4 2 | 1 57 379 |
+-------------+-----------+-------------+
| 59 59 4 | 67 67 1 | 2 3 8 |
| 8 3 1 | 5 2 9 | 6 47 47 |
| 7 2 6 | 8 3 4 | 5 9 1 |
+-------------+-----------+-------------+
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Rocky Mozell
Joined: 28 Jul 2010
Posts: 34
Location: Boston, MA
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| Posted: Mon Feb 23, 2015 3:46 pm Post subject: |
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I did this 3 times using basics only. Can someone point out the error of my ways?
Lee, you can eliminate all the 5's in box 1 column 2 which sets r3c6 to 5 solving the puzzle. |
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danw
Joined: 31 Jul 2012
Posts: 16
Location: Phoenixville, PA USA
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| Posted: Mon Feb 23, 2015 3:50 pm Post subject: |
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I did this twice and found it to be solved by basics. I came to this point:
| Code: |
+------------+-----------+-------------+
| 2 489 59 | 346 1 35 | 7 68 45 |
| 6 47 57 | 2 9 8 | 34 1 345 |
| 1 48 3 | 467 67 57 | 9 68 2 |
+------------+-----------+-------------+
| 4 1 79 | 379 5 37 | 8 2 6 |
| 359 579 2 | 1 8 6 | 34 457 3479 |
| 359 6 8 | 79 4 2 | 1 57 379 |
+------------+-----------+-------------+
| 59 59 4 | 67 67 1 | 2 3 8 |
| 8 3 1 | 5 2 9 | 6 47 47 |
| 7 2 6 | 8 3 4 | 5 9 1 |
+------------+-----------+-------------+
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I saw that row 3 only had a 5 in column 6 and the puzzle solved out from there. I may have made the same lucky guess mistake twice but that's what I found.
Dan W |
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rmireland
Joined: 21 Sep 2013
Posts: 33
Location: New Orleans
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| Posted: Mon Feb 23, 2015 4:14 pm Post subject: |
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Seems to be basics only.
To check, I used Hint and Grade. After setting about 12 singles, the grade changes from Very Hard to just Hard.
Maybe there is a tedium factor in the grading. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Mon Feb 23, 2015 6:45 pm Post subject: |
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| I did this a few times and got some different results, but twice it solved with basics, once with pencil and paper and once using Draw/Play. |
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kuskey
Joined: 10 Dec 2008
Posts: 141
Location: Pembroke, NH
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| Posted: Tue Feb 24, 2015 2:36 am Post subject: |
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I agree with danw, basics all the way with the key being r3c6=5, which reveals a 467 trip in c4. This ultimately sets r6c4=9, revealing the solution.
I got it right the first try but really screwed up in trying to confirm. The deep weeds swallowed me up and I punted with the T1 UR 67 which yielded a solution, but I can't remember how.
Puzzles with huge numbers of pencil marks give me troubles. At this point I usually break out the trusty old box-line reduction tool and apply it systematically to all rows, columns, and boxes, repeated until I get all the basics. |
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