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Jan 23rd puzzle

 
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guest
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PostPosted: Tue Jan 24, 2006 12:57 am    Post subject: Jan 23rd puzzle Reply with quote

1_5 4_9 3_6
__3 1__ __5
692 735 418
536 _74 ___
7__ ___ _34
__4 ___ 657
25_ _4_ 76_
__7 __1 __3
3_8 9_7 _42

I am completely stuck at this point. Does anyone know a next move?

Thanks,

Brad
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wahaha
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PostPosted: Tue Jan 24, 2006 5:45 am    Post subject: Re: Jan 23rd puzzle Reply with quote

there is a pair of hidden (1,9) in r5c5 & r6c5

after that, every think will run smoothly
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akif
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PostPosted: Tue Jan 24, 2006 7:34 am    Post subject: Jan 23rd puzzle Reply with quote

I was stuck at this point

175 489 326
--3 1-2 -7-
-92 73- -18

536 -74 ---
7-- --- -34
--4 --- 657

25- -4- 76-
--7 -21 ---
3-8 9-7 -42

Can anyone hepl ??
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dotdot



Joined: 07 Dec 2005
Posts: 29
Location: oberseen

PostPosted: Tue Jan 24, 2006 8:51 am    Post subject: for akif Reply with quote

Hallo akif

One way forward is to see that r7c4 and r7c6 between them contain 3 and 8 and nothing else, i.e. {3,8}.
Although we don't know exactly where this 3 is, it affects what can be a 3 in box9, i.e. r7c9 can't be a 3.

Having found the 3 in box9, you could continue in the same sort of vein with {1,9} in col9.

By the way, you have arrived at an interesting constellation with row7 and box8.
Because the unshared parts of row7 and the unshared part of box8 must have the same values, fitting one into the other leads directly to
{1,9} in r7c3 and r7c9
{5,6} in r8c4 and r9c5.
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Jared
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PostPosted: Tue Jan 24, 2006 6:37 pm    Post subject: multiple solutions Reply with quote

did anybody finish this one with multiple solutions?
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Bucky
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PostPosted: Tue Jan 24, 2006 9:32 pm    Post subject: Multiple Solution Reply with quote

Yes. My coworker and I came up with different solutions for this puzzle. Strange.

--Bucky
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geoff h



Joined: 07 Aug 2005
Posts: 58
Location: Sydney

PostPosted: Tue Jan 24, 2006 10:13 pm    Post subject: Reply with quote

Hi there,

Actually, there is only one solution to this problem. If you send me what you ended up with, maybe I can help you??

Cheers.
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alanr555



Joined: 01 Aug 2005
Posts: 193
Location: Bideford Devon EX39

PostPosted: Wed Jan 25, 2006 12:04 am    Post subject: Reply with quote

> You have arrived at an interesting constellation with row7
> and box8.
> The unshared parts of row7 and the unshared part
> of box8 must have the same values

This is an excellent way of explaining this logical phenomenon.
It suggests a "visual" approach to solution rather than the
searching for patterns within profiles held within cells.

+++

Line 5 was quite interesting in that the line profile started as
(4)(7)(1235689)
and at one point became
(3)(4)(7) (19)(28)(56)
with three pairs on the same line.
Has anyone encountered FOUR pairs in the same line?

+++

Alan Rayner BS23 2QT
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Guest






PostPosted: Thu Jan 26, 2006 2:40 pm    Post subject: Re: Jan 23rd puzzle Reply with quote

wahaha wrote:
there is a pair of hidden (1,9) in r5c5 & r6c5

after that, every think will run smoothly


Thanks!!! Very Happy
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zeigler
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PostPosted: Fri Jan 27, 2006 6:43 am    Post subject: Re: Jan 23rd puzzle Reply with quote

Anonymous wrote:
wahaha wrote:
there is a pair of hidden (1,9) in r5c5 & r6c5

after that, every think will run smoothly


Thanks!!! Very Happy


same here...

was hard to see it in 125689 and 1289 but once pointed out it became obvious Embarassed (usually find such hidden pairs in rows [left-right] than in columns [up-down])
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