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Oct 9 VH

 
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hughwill



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK

PostPosted: Fri Oct 09, 2015 10:09 am    Post subject: Oct 9 VH Reply with quote

After basics:
Code:

+--------------+----------+------------+
| 8   4   12   | 7  6 9   | 35 1235 13 |
| 26  369 1269 | 4  5 23  | 7  123  8  |
| 7   38  5    | 28 1 238 | 4  6    9  |
+--------------+----------+------------+
| 9   2   3    | 1  8 7   | 6  4    5  |
| 56  7   4    | 9  2 56  | 8  13   13 |
| 1   568 68   | 56 3 4   | 2  9    7  |
+--------------+----------+------------+
| 3   1   68   | 56 4 568 | 9  7    2  |
| 4   89  289  | 28 7 1   | 35 35   6  |
| 256 56  7    | 3  9 26  | 1  8    4  |
+--------------+----------+------------+

Play this puzzle online at the Daily Sudoku site

Another two-stepper!(?)
Quote:
28-3 XY-wing pivot r2c6 followed by 69-8 XY-wing pivot r8c2


Hugh (presumably Clement's on holiday...)
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JC Van Hay



Joined: 13 Jun 2010
Posts: 494
Location: Charleroi, Belgium

PostPosted: Fri Oct 09, 2015 10:45 am    Post subject: Reply with quote

Code:
+-----------------+-------------+--------------+
| 8     4    12   | 7   6  9    | 35  1235  13 |
| (26)  69   1269 | 4   5  3    | 7   12    8  |
| 7     3    5    | 28  1  28   | 4   6     9  |
+-----------------+-------------+--------------+
| 9     2    3    | 1   8  7    | 6   4     5  |
| 5(6)  7    4    | 9   2  5(6) | 8   13    13 |
| 1     568  68   | 56  3  4    | 2   9     7  |
+-----------------+-------------+--------------+
| 3     1    68   | 56  4  568  | 9   7     2  |
| 4     89   289  | 28  7  1    | 35  35    6  |
| 56-2  56   7    | 3   9  (26) | 1   8     4  |
+-----------------+-------------+--------------+
WWing(26)r2c1.r9c6,6R5 - 2r9c1; stte
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Clement



Joined: 24 Apr 2006
Posts: 1110
Location: Dar es Salaam Tanzania

PostPosted: Fri Oct 09, 2015 11:47 am    Post subject: Re: Oct 9 VH Reply with quote

hughwill wrote:
After basics:
Code:

+--------------+----------+------------+
| 8   4   12   | 7  6 9   | 35 1235 13 |
| 26  369 1269 | 4  5 23  | 7  123  8  |
| 7   38  5    | 28 1 238 | 4  6    9  |
+--------------+----------+------------+
| 9   2   3    | 1  8 7   | 6  4    5  |
| 56  7   4    | 9  2 56  | 8  13   13 |
| 1   568 68   | 56 3 4   | 2  9    7  |
+--------------+----------+------------+
| 3   1   68   | 56 4 568 | 9  7    2  |
| 4   89  289  | 28 7 1   | 35 35   6  |
| 256 56  7    | 3  9 26  | 1  8    4  |
+--------------+----------+------------+

Play this puzzle online at the Daily Sudoku site

Another two-stepper!(?)
Quote:
28-3 XY-wing pivot r2c6 followed by 69-8 XY-wing pivot r8c2


Hugh (presumably Clement's on holiday...)
Clement is having a rest
It is a one stepper
Code:

+-------------+----------+------------+
| 8   4   12  | 7  6 9   | 35 1235 13 |
| 26  69*  129 | 4  5 3   | 7  12   8  |
| 7   3   5   | 28 1 28  | 4  6    9  |
+-------------+----------+------------+
| 9   2   3   | 1  8 7   | 6  4    5  |
| 56  7   4   | 9  2 56  | 8  13   13 |
| 1   568 68  | 56 3 4   | 2  9    7  |
+-------------+----------+------------+
| 3   1   68*  | 56 4 568 | 9  7    2  |
| 4   89#  29  | 28 7 1   | 35 35   6  |
| 256 5-6  7   | 3  9 26  | 1  8    4  |
+-------------+----------+------------+
XY-Wing 89-6 pivoted in r8c2; r9c2<>6; stte
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Marty R.



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

PostPosted: Fri Oct 09, 2015 4:43 pm    Post subject: Reply with quote

Agree with Clement.
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hughwill



Joined: 05 Apr 2010
Posts: 422
Location: Birmingham UK

PostPosted: Fri Oct 09, 2015 5:34 pm    Post subject: Reply with quote

Marty R. wrote:
Agree with Clement.


So do I. Those damn sole candidates- so hard to see sometimes
when you're looking for complexity....

Hugh
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George Woods



Joined: 28 Mar 2006
Posts: 304
Location: Dorset UK

PostPosted: Sat Oct 10, 2015 1:24 pm    Post subject: Another W Wing Reply with quote

Having made use of the 68 lone pair there is another W Wing 56 in boxes 4 and 7 operating on 6's in col 3
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dongrave



Joined: 06 Mar 2014
Posts: 563

PostPosted: Sat Oct 10, 2015 2:53 pm    Post subject: Reply with quote

I can't believe I missed such an obvious XY Wing. (Ugh.) I ended up using the X Wing of 6's in columns 3 and 4 which opened up a couple of 568 XY Wings. I always seem to find the URs easily (this one has a 13 UR and a 35) but I never use them.
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marinemammal



Joined: 06 Apr 2014
Posts: 3
Location: Oregon

PostPosted: Wed Oct 14, 2015 2:05 pm    Post subject: Fri 9-Oct-2015 Reply with quote

I got to this point and still can't solve it...

+--------------------------------------+
| 8 4 1 | 7 6 9 | 5 2 3 |
| 26 69 29 | 4 5 3 | 7 1 8 |
| 7 3 5 | 28 1 28 | 4 6 9 |
+---------------------------------------|
| 9 2 3 | 1 8 7 | 6 4 5 |
| 56 7 4 | 9 2 56 | 8 3 1 |
| 1 58 68 | 56 3 4 | 2 9 7 |
+---------------------------------------+
| 3 1 68 | 56 4 58 | 9 7 2 |
| 4 89 29 | 28 7 1 | 3 5 6 |
|256 56 7 | 3 9 26 | 1 8 4 |
+---------------------------------------+
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rmireland



Joined: 21 Sep 2013
Posts: 33
Location: New Orleans

PostPosted: Wed Oct 14, 2015 3:21 pm    Post subject: Re: Fri 9-Oct-2015 Reply with quote

marinemammal wrote:
I got to this point and still can't solve it...

+--------------------------------------+
| 8 4 1 | 7 6 9 | 5 2 3 |
| 26 69 29 | 4 5 3 | 7 1 8 |
| 7 3 5 | 28 1 28 | 4 6 9 |
+---------------------------------------|
| 9 2 3 | 1 8 7 | 6 4 5 |
| 56 7 4 | 9 2 56 | 8 3 1 |
| 1 58 68 | 56 3 4 | 2 9 7 |
+---------------------------------------+
| 3 1 68 | 56 4 58 | 9 7 2 |
| 4 89 29 | 28 7 1 | 3 5 6 |
|256 56 7 | 3 9 26 | 1 8 4 |
+---------------------------------------+


You just need Clement's XY-Wing 89-6 pivoted in r8c2; r9c2<>6; stte
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA

PostPosted: Wed Oct 14, 2015 8:43 pm    Post subject: Re: Fri 9-Oct-2015 Reply with quote

rmireland wrote:
You just need Clement's XY-Wing 89-6 pivoted in r8c2; r9c2<>6; stte

There are two XY-wings 5-68 and -689. Look for both of them in C2. And therea BUG+1.

Keith
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