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Clement
Joined: 24 Apr 2006 Posts: 1110 Location: Dar es Salaam Tanzania
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Posted: Fri May 03, 2013 10:27 pm Post subject: May 4 VH |
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Code: |
+--------+----------+----------+
| 4 6 1 | 9 58 38 | 2 35 7 |
| 9 8 3 | 56 7 2 | 56 1 4 |
| 7 5 2 | 13 #16 4 | *69 39 8 |
+--------+----------+----------+
| 3 7 9 | 2 4 5 | 8 6 1 |
| 8 2 46 | 13 *19 36 | 7-9 479 5 |
| 5 1 46 | 7 89 68 | 3 49 2 |
+--------+----------+----------+
| 6 4 5 | 8 3 7 | 1 2 9 |
| 1 3 8 | 4 2 9 | 57 57 6 |
| 2 9 7 | 56 56 1 | 4 8 3 |
+--------+----------+----------+
| XY-Wing 19-16-69 pivoted in r3c5; r5c7<>9, stte.
Also BUG+1; r5c8=9. |
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Marty R.
Joined: 12 Feb 2006 Posts: 5770 Location: Rochester, NY, USA
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Posted: Sat May 04, 2013 3:38 am Post subject: |
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This is the 2nd consecutive VH where the basics reduced the grid to a BUG+1. |
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jay
Joined: 19 Feb 2013 Posts: 10 Location: Grove, Oklahoma
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Posted: Sat May 04, 2013 7:32 pm Post subject: |
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I am too blinded to see how you got so many eliminations. I actually solved this puzzle once, and decided to see what others had to say. My solution was not the same as here. I probably made a mistake that was a lucky one!
What basics am I overlooking here?
Oops. Soon as I post this, my eyes can see.
The sixes in c6 eliminate the rest of the 6s in box 5, and then some more basics leading to the 1-6-9 xy wing
Code: |
+--------+---------------+----------+
| 4 6 1 | 9 358 38 | 2 35 7 |
| 9 8 3 | 567 567 2 | 56 1 4 |
| 7 5 2 | 13 136 4 | 69 39 8 |
+--------+---------------+----------+
| 3 7 9 | 2 4 5 | 8 6 1 |
| 8 2 46 | 13 13679 367 | 79 479 5 |
| 5 1 46 | 67 6789 678 | 3 479 2 |
+--------+---------------+----------+
| 6 4 5 | 8 37 37 | 1 2 9 |
| 1 3 8 | 4 2 9 | 57 57 6 |
| 2 9 7 | 56 56 1 | 4 8 3 |
+--------+---------------+----------+
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Play this puzzle online at the Daily Sudoku site |
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