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Mar 4 VH

 
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kuskey



Joined: 10 Dec 2008
Posts: 127
Location: Pembroke, NH

PostPosted: Fri Mar 04, 2011 6:43 am    Post subject: Mar 4 VH Reply with quote

About all I could find was an X-Wing on 3 in c48 leading to r1c7 and r7c2<>3 and the solution. A type 4 UR on 67 took out the 6s in r6c14 but didn't lead anywhere although I have a feeling I'm missing something there.
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Marty R.



Joined: 12 Feb 2006
Posts: 5179
Location: Rochester, NY, USA

PostPosted: Fri Mar 04, 2011 4:55 pm    Post subject: Reply with quote

This was a puzzle like years ago before the XY- and XYZ-Wings were introduced. Then an X-Wing was all that was needed to solve them.
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Ema Nymton



Joined: 17 Apr 2009
Posts: 87

PostPosted: Sat Mar 05, 2011 11:02 am    Post subject: Re: Mar 4 VH Reply with quote

.

kuskey wrote:
About all I could find was an X-Wing on 3 in c48 leading to r1c7 and r7c2<>3 and the solution. A type 4 UR on 67 took out the 6s in r6c14 but didn't lead anywhere although I have a feeling I'm missing something there.


Can you put this into English for the rest of us?

Code:

+----------------+----------+--------------+
| 1    7    69   | 4   2 5  | 36  3689 368 |
| 3    4    8    | 9   7 6  | 5   12   12  |
| 2569 2569 569  | 8   1 3  | 4   69   7   |
+----------------+----------+--------------+
| 569  3569 2    | 56  8 19 | 136 7    4   |
| 67   8    4    | 67  3 12 | 9   5    12  |
| 5679 1    3569 | 567 4 29 | 8   236  36  |
+----------------+----------+--------------+
| 8    356  1356 | 2   9 4  | 7   136  356 |
| 26   236  7    | 1   5 8  | 236 4    9   |
| 4    259  159  | 3   6 7  | 12  18   58  |
+----------------+----------+--------------+


FYI - Hint is r1c7 = '6'.

Ema Nymton
.
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keith



Joined: 19 Sep 2005
Posts: 3184
Location: near Detroit, Michigan, USA

PostPosted: Sat Mar 05, 2011 12:52 pm    Post subject: Reply with quote

Squares R4C2 and R4C7 in row 4 and R8C2 and R8C7 in row 8 form a Simple X-Wing pattern on possibility <3>. All other instances of this possibility in columns 2 and 7 can be removed.

R1C7 - can remove <3> from <36> leaving <6>.
R7C2 - can remove <3> from <356> leaving <56>.

Keith
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Ema Nymton



Joined: 17 Apr 2009
Posts: 87

PostPosted: Sat Mar 05, 2011 1:02 pm    Post subject: Reply with quote

.

keith wrote:
Squares R4C2 and R4C7 in row 4 and R8C2 and R8C7 in row 8 form a Simple X-Wing pattern on possibility <3>. All other instances of this possibility in columns 2 and 7 can be removed.

R1C7 - can remove <3> from <36> leaving <6>.
R7C2 - can remove <3> from <356> leaving <56>.

Keith


Thank you very much. Brilliant when one sees it.

Again, thank you.

Ema Nymton
.
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