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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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 Posted: Sat Nov 19, 2011 1:48 pm Post subject: Interesting Vanhagen Extreme |
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Here is a Vanhagen Extreme puzzle that I found interesting. Specifically, I found two one step solutions involving totally different techniques but both resulted in essentially identical deletion.
| Code: |
+-------+-------+-------+
| 7 . . | . . . | . . 2 |
| . . 5 | . 7 . | 9 . . |
| . 4 8 | . 2 . | 1 7 . |
+-------+-------+-------+
| . 8 2 | 4 1 7 | 5 3 . |
| 4 3 . | . . . | . 1 8 |
| . 7 1 | 9 8 3 | 2 4 . |
+-------+-------+-------+
| . 2 4 | . 9 . | 6 5 . |
| . . 7 | . 4 . | 3 . . |
| 1 . . | . . . | . . 4 |
+-------+-------+-------+
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Play online
Ted |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sat Nov 19, 2011 8:30 pm Post subject: |
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Potential DP 16-18-68 in r1. Either r1c4=35 (pseudo cell) or r1c2=9. There were several common outcomes which solved the puzzle.
Same type of solution with the DP 56 in boxes 58, but that's not the different technique you refer to. |
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Marty R.
Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA
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| Posted: Sun Nov 20, 2011 12:58 am Post subject: |
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Ted, I'd be interested in your solutions since I couldn't find a thing other than what I posted.
| Code: |
+-----------+---------------+--------+
| 7 169 36 | 1358 35 1589 | 4 68 2 |
| 2 16 5 | 18 7 4 | 9 68 3 |
| 39 4 8 | 36 2 69 | 1 7 5 |
+-----------+---------------+--------+
| 6 8 2 | 4 1 7 | 5 3 9 |
| 4 3 9 | 256 56 256 | 7 1 8 |
| 5 7 1 | 9 8 3 | 2 4 6 |
+-----------+---------------+--------+
| 38 2 4 | 138 9 18 | 6 5 7 |
| 89 569 7 | 2568 4 2568 | 3 29 1 |
| 1 569 36 | 7 356 256 | 8 29 4 |
+-----------+---------------+--------+
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Play this puzzle online at the Daily Sudoku site |
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tlanglet
Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
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| Posted: Sun Nov 20, 2011 1:07 am Post subject: |
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Marty,
I first found the BUG-Lite+2(168)r12c248 which made r3c6=9
Then I found an Almost Sue de Coq.(13568)c4b2 with ab=(18)r7c4 & cd=(35)r1c5 & e=(6)r3c4 plus fin (3)r7c4
SdQ(13568)c4b2=(3)r7c4-r7c1=(3-9)r3c1=r3c9; r3c6<>6=9
I remember that you do not like "almost" patterns but I find then fun and very useful.
Ted |
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