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In the style of "Very Hard"

 
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Mar 16, 2008 1:51 pm    Post subject: In the style of "Very Hard" Reply with quote
This Brain Bashers puzzle can be solved using the techniques needed for this site's "Very Hard" puzzles.

Code:
Puzzle: BB031508sh
+-------+-------+-------+
| 8 . . | . 5 . | . . 6 |
| . 6 1 | . . . | 7 5 . |
| . 2 . | 1 . 6 | . 3 . |
+-------+-------+-------+
| . . 6 | . 3 . | 8 . . |
| 9 . . | 4 . 2 | . . 3 |
| . . 4 | . 7 . | 9 . . |
+-------+-------+-------+
| . 8 . | 5 . 3 | . 9 . |
| . 9 7 | . . . | 3 8 . |
| 1 . . | . 9 . | . . 2 |
+-------+-------+-------+


Keith
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sun Mar 16, 2008 7:51 pm    Post subject: Reply with quote
a little misleading if you are inclined to start with x-wings.

{2,4,6} xy-wing pivot in r7c5 actually finishes it before any x-wings are needed
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Mar 16, 2008 8:26 pm    Post subject: Reply with quote
Norm,

I used two X-wings and three XY-wings!

Keith
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Sun Mar 16, 2008 8:42 pm    Post subject: Reply with quote
Code:
8      34     9      | 37     5      47     | 2      1      6
34     6      1      | 23     24     9      | 7      5      8
7      2      5      | 1      8      6      | 4      3      9
------------------------------------------------------------------
25     157    6      | 9      3      15     | 8      247    145
9      157    8      | 4      16     2      | 56     76     3
235    135    4      | 68     7      158    | 9      26     15
------------------------------------------------------------------
46     8      2      | 5      46     3      | 1      9      7
456    9      7      | 26     1246   14     | 3      8      45
1      45     3      | 78     9      78     | 56     46     2


is this the grid after basics??
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keith



Joined: 19 Sep 2005
Posts: 3355
Location: near Detroit, Michigan, USA
PostPosted: Sun Mar 16, 2008 9:28 pm    Post subject: Reply with quote
storm_norm wrote:
Code:
8      34     9      | 37     5      47     | 2      1      6
34     6      1      | 23     24     9      | 7      5      8
7      2      5      | 1      8      6      | 4      3      9
------------------------------------------------------------------
25     157    6      | 9      3      15     | 8      247    145
9      157    8      | 4      16     2      | 56     76     3
235    135    4      | 68     7      158    | 9      26     15
------------------------------------------------------------------
46     8      2      | 5      46     3      | 1      9      7
456    9      7      | 26     1246   14     | 3      8      45
1      45     3      | 78     9      78     | 56     46     2


is this the grid after basics??


Yes. It has two X-wings and four XY-wings.

Keith
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tlanglet



Joined: 17 Oct 2007
Posts: 2468
Location: Northern California Foothills
PostPosted: Sun Mar 16, 2008 11:51 pm    Post subject: Reply with quote
keith wrote:
Norm,

I used two X-wings and three XY-wings!

Keith


Keith, I think you and I both followed a similar sequence since I found two X-wings and three XY-wings also. But it was the {246} XY-wing pivoting at r7c5 that finished off the puzzle.

Ted
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storm_norm



Joined: 18 Oct 2007
Posts: 1741
PostPosted: Mon Mar 17, 2008 1:56 am    Post subject: Reply with quote
keith wrote:
Norm,

I used two X-wings and three XY-wings!

Keith


Laughing ok, i see what you are saying, you went with the x-wings first then the xy-wings next to complete it.
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