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A Lesser Challenge

 
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Earl



Joined: 30 May 2007
Posts: 677
Location: Victoria, KS

PostPosted: Thu Aug 09, 2007 8:43 pm    Post subject: A Lesser Challenge Reply with quote

Again no HV, so I tinkered with this one.
After x-wings of <1> and <7>, I was stalled.
Then a forcing chained opened the puzzle.
If R9C2 is either 1 or 7, R5C3 must be 6.
Is there a more logical path than a forcing chain here?
Forcing chains seem like "wild guesses."

Thanks,

Earl


Code:

+-----------------+--------+---------------+
| 345   1345 8    | 9  7 6 | 2   1345 135  |
| 2479  147  129  | 3  5 8 | 146 1479 1679 |
| 3579  6    59   | 4  1 2 | 35  8    3579 |
+-----------------+--------+---------------+
| 68    2    7    | 16 4 5 | 9   13   1368 |
| 1     9    56   | 8  3 7 | 56  2    4    |
| 4568  45   3    | 16 2 9 | 7   15   1568 |
+-----------------+--------+---------------+
| 357   8    15   | 2  9 4 | 135 6    1357 |
| 23569 35   2569 | 7  8 1 | 345 3459 2359 |
| 279   17   4    | 5  6 3 | 8   179  1279 |
+-----------------+--------+---------------+

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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

PostPosted: Thu Aug 09, 2007 9:38 pm    Post subject: Reply with quote

You can do something in Box 7.

Then, I see a chain. Beyond that I haven't looked.
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nataraj



Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

PostPosted: Fri Aug 10, 2007 10:00 am    Post subject: Reply with quote

today's "vh" not a great challenge so thx for yours.

after the (1357) quad in box 7 - xwings on '7' and '1' .
xy wing pivot r6c8 (16-15-56).

then xy-chains galore, around but not limited to this spot:

'54'(r6c2)='47'(r2c2)='71'(r9c2)
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