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One from Vanhegan

 
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keith



Joined: 19 Sep 2005
Posts: 3340
Location: near Detroit, Michigan, USA

PostPosted: Fri Nov 27, 2009 9:31 pm    Post subject: One from Vanhegan Reply with quote

Since the Freep puzzle was such a walk in the park, try this one from Vanhegan.

(It is not very difficult, but you'll need a full tank of gas!)
Code:
Puzzle: VanH3-101998
+-------+-------+-------+
| 1 . 5 | . . . | 2 . 9 |
| . 8 . | 2 5 9 | . 3 . |
| . 2 . | . . . | . 4 . |
+-------+-------+-------+
| . . . | 5 7 1 | . . . |
| . . 1 | . . . | 7 . . |
| . . . | 6 3 2 | . . . |
+-------+-------+-------+
| . 1 . | . . . | . 5 . |
| . 3 . | 4 2 8 | . 1 . |
| 2 . 4 | . . . | 8 . 3 |
+-------+-------+-------+
Keith
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Fri Nov 27, 2009 11:16 pm    Post subject: Reply with quote

I used:

Quote:
Two XYZ-Wings and multi-coloring on 7
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keith



Joined: 19 Sep 2005
Posts: 3340
Location: near Detroit, Michigan, USA

PostPosted: Fri Nov 27, 2009 11:54 pm    Post subject: Reply with quote

Marty,

I found the "basics" on this one quite tough!. Then it came down to a UR and a swordfish.

Keith
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arkietech



Joined: 31 Jul 2008
Posts: 1832
Location: Northwest Arkansas USA

PostPosted: Fri Nov 27, 2009 11:55 pm    Post subject: Reply with quote

two steps for me:
Quote:
Swordfish 6
xy-wing 498
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Marty R.



Joined: 12 Feb 2006
Posts: 5770
Location: Rochester, NY, USA

PostPosted: Sat Nov 28, 2009 12:12 am    Post subject: Reply with quote

Quote:
Then it came down to a UR and a swordfish.

I generally don't look for swordfish, probably because I don't know how to search efficiently. Thus, it boils down to too much effort for too little return.
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Earl



Joined: 30 May 2007
Posts: 605
Location: Victoria, KS

PostPosted: Sat Nov 28, 2009 12:53 am    Post subject: Vanhyegan Reply with quote

After basics, just a (689) xyz-wing.

Earl
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enxio27



Joined: 18 Jun 2012
Posts: 21

PostPosted: Mon Aug 22, 2016 4:05 pm    Post subject: Reply with quote

Keith, any idea of a date on this puzzle? Was it 27 November 2009, or an earlier date?
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dongrave



Joined: 06 Mar 2014
Posts: 326

PostPosted: Fri Aug 26, 2016 12:44 pm    Post subject: Reply with quote

I had the following grid after basics:
Code:

 +-----------+-------------+-------------+
 | 1  67  5  | 378 4   367 | 2   78  9   |
 | 4  8   67 | 2   5   9   | 16  3   17  |
 | 9  2   3  | 178 18  67  | 56  4   578 |
 +-----------+-------------+-------------+
 | 68 469 2  | 5   7   1   | 3   689 468 |
 | 3  56  1  | 89  89  4   | 7   2   56  |
 | 7  45  89 | 6   3   2   | 15  89  145 |
 +-----------+-------------+-------------+
 | 68 1   89 | 37  69  37  | 4   5   2   |
 | 5  3   67 | 4   2   8   | 9   1   67  |
 | 2  679 4  | 19  169 5   | 8   67  3   |
 +-----------+-------------+-------------+

And then I used the same XYZ Wing as Earl which solves it. 689 XYZ Wing with pivot at r4c8 so r4c9<>8.
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Clement



Joined: 24 Apr 2006
Posts: 962
Location: Dar es Salaam Tanzania

PostPosted: Fri Aug 26, 2016 11:27 pm    Post subject: One from Vanhegan Reply with quote

Code:

+-----------+-------------+------------+
| 1  f67  5  | 378 4   367 | 2  78  9   |
| 4  8   e67 | 2   5   9   | d16 3   17  |
| 9  2   3  | 178 18  67  | c56 4   b578 |
+-----------+-------------+------------+
| h6-8 g469 2  | 5   7   1   | 3  689 a468 |
| 3  g56  1  | 89  89  4   | 7  2   56  |
| 7  45  89 | 6   3   2   | 15 89  145 |
+-----------+-------------+------------+
| 68 1   89 | 37  69  37  | 4  5   2   |
| 5  3   67 | 4   2   8   | 9  1   67  |
| 2  679 4  | 19  169 5   | 8  67  3   |
+-----------+-------------+------------+

(8)r4c9 = (8-5)r3c9 = (5-6)r3c7 = r2c7 - r2c3 = r1c2 - r45c2 = (6)r4c1 => -8 r4c1; stte
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