evil one

Advanced methods and approaches for solving Sudoku puzzles

evil one

Postby monkey » Thu Aug 18, 2005 1:54 pm

Hi folks,

I am stuck with this one....

original puzzle:
x8x|x6x|xxx
6xx|x8x|5x2
x1x|9x2|xxx
--------------
xx5|xx6|xxx
3xx|x7x|xx8
xxx|4xx|7xx
--------------
xxx|1x7|x5x
1x7|x5x|xx3
xxx|x9x|x4x

this is what I have done so far:
x82|x6x|xxx
6xx|x8x|5x2
513|942|876
--------------
xx5|xx6|xxx
3xx|x7x|xx8
xxx|4xx|7x5
--------------
x3x|127|659
197|654|283
256|x9x|147

can anyone guide me to the next step ?

thanks.
monkey
 
Posts: 13
Joined: 10 August 2005

Postby simes » Thu Aug 18, 2005 2:52 pm

A naked pair in block 5, then another in row 6.

S
simes
 
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Joined: 11 March 2005
Location: UK

Postby Xenon » Thu Aug 18, 2005 2:53 pm

The Top Middle Box has 1's restricted to Column 6 so you can exclude all other 1's in Column 6.

The Top Middle and Bottom Middle Boxes have 3's restricted to Columns 4 and 6 so you can exclude all other 3's in Columns 4 and 6.

This gives you a Naked Pair in Row 6.

After that it just opens up.

Edit: Beaten by Simes once again.
Xenon
 
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Joined: 15 August 2005

Postby Jeff » Thu Aug 18, 2005 3:09 pm

Xenon wrote:Beaten by Simes once again.

By 1 minute.
Jeff
 
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Joined: 01 August 2005

Postby monkey » Thu Aug 18, 2005 3:37 pm

Thanks people. I will see how that helps.
:)
monkey
 
Posts: 13
Joined: 10 August 2005

Postby monkey » Thu Aug 18, 2005 3:52 pm

Fell apart like a house of cards !

Thank you all

:D
monkey
 
Posts: 13
Joined: 10 August 2005


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