## How should I do here without guessing?

Advanced methods and approaches for solving Sudoku puzzles

### How should I do here without guessing?

4*983*72*
*8*4*2***
**2**7*4*
62*******
9432**65*
8******92
2146**379
*****9284
*98*24***

Thank you for helping me!

Best regards!
kapa2183

Posts: 7
Joined: 10 July 2005

### Re: How should I do here without guessing?

Look for Naked Pairs .
angusj

Posts: 306
Joined: 12 June 2005

Hello!

I have tried that, but still I have to guess?
kapa2183

Posts: 7
Joined: 10 July 2005

Do I really have to trial and error on this one?
kapa2183

Posts: 7
Joined: 10 July 2005

kapa2183 wrote:Do I really have to trial and error on this one?

No!

Look at 3 in block 6 and row 4. Then look at (6,6)
Last edited by simes on Sun Dec 11, 2011 9:41 am, edited 1 time in total.
simes

Posts: 324
Joined: 11 March 2005
Location: UK

thank you for helping me, but I do not really nderstand what you meen?
kapa2183

Posts: 7
Joined: 10 July 2005

sorry but block six, is that the block with foloowing entries:

***
65*
*92

and the row four:

62*******

and (6,6) shoul be the lower right corner in the middle block???

But I do not understand how you should go on....
kapa2183

Posts: 7
Joined: 10 July 2005

Hello again!

What do you meen with: look at 3??

Is that look for a three or is it look in box three in that block?

Best regards
kapa2183

Posts: 7
Joined: 10 July 2005

Yes, block and row as you describe. Look at where the digit 3 can be placed in block 6 and row 4. There's an interaction that allows you to eliminate candidates.
Last edited by simes on Sun Dec 11, 2011 9:41 am, edited 1 time in total.
simes

Posts: 324
Joined: 11 March 2005
Location: UK

ok

Thank you so much for your help, I missed that one!
kapa2183

Posts: 7
Joined: 10 July 2005