dailysudoku.com

[Bilsol]

Hey Geoff,

O.k. here we are. It was rated 5 of 5stars in the local paper here in San Diego
and the program described it as hard so I don't feel too bad about getting stuck.

I only got eleven numbers deciphered (mostly through simple triangulation) before I hit an impass and asked the program for a hint.

The number it gave is the 2 in R7 C3.

The box needs 2, 3, 6, 7. The 6 must go in C2. 2 can go in C1. I see nothing excluding a 7 from going in C3.

x x x  6 x x  4 9 x 
9 5 1 7 x 4 6 2 x
4 8 6 2 x x x x 7   
   
7 1 x 4 2 x x 3 x 
x 4 3 x x x 2 x x
x 2 x x x x x 7 4 

8 x 2 x x x x 4 x
x x 5 9 4 1 x 8 x
1 9 4 x x 2 x x x
     

[someone_somewhere]

Hi,

The following will help to check if you know all the needed techniques:

6 not in r8c1, it is in r7c2 or r8c2 (Column on 3x3 Block interaction)
1 not in r5c5, it is in r5c4 or r6c4 (Column on 3x3 Block interaction)
1 not in r6c5, it is in r5c4 or r6c4 (Column on 3x3 Block interaction)
8 not in r4c9, it is in r4c7 or r6c7 (Column on 3x3 Block interaction)
8 not in r5c9, it is in r4c7 or r6c7 (Column on 3x3 Block interaction)
8 not in r4c6, it is in r5c4 or r5c5 or r5c6 (Row on 3x3 Block interaction)
8 not in r6c4, it is in r5c4 or r5c5 or r5c6 (Row on 3x3 Block interaction)
8 not in r6c5, it is in r5c4 or r5c5 or r5c6 (Row on 3x3 Block interaction)
8 not in r6c6, it is in r5c4 or r5c5 or r5c6 (Row on 3x3 Block interaction)
3 not in r1c5, it is in r1c1 or r1c2 of the 3x3 (3x3 Block on Row/Column interaction)
3 not in r1c6, it is in r1c1 or r1c2 of the 3x3 (3x3 Block on Row/Column interaction)
3 not in r1c9, it is in r1c1 or r1c2 of the 3x3 (3x3 Block on Row/Column interaction)
2 not in r7c9, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
3 not in r7c7, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
3 not in r7c9, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
5 not in r7c7, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
5 not in r7c9, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
6 not in r7c9, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
7 not in r7c7, Hidden Pair 1 9 in r7c7 and r7c9 (in Row)
2 in r7c3 - Unique Horizontal

hope I could help,

see u,

[Billsol]

I should have noticed that row 7 needs only 1 & 9 at the far right box.

Making the 2 at R8 C9 a more obvious find than the hint the program gave me.

[geoff h]

Good to see someone_somewhere could help you. Yes, sometimes the Hint given is not the most helpful ( or logical ) one.

The best tip I can give is really concentrating on the Column/Row interaction with the individual boxes.

Good luck!!

Geoff

[Guest]

[geoff h]

Hi Guest,

I'm not really sure what your question is and how far you have got in the puzzle??

If you follow the logical thread posted by someone somewhere, you should be able to complete the puzzle. Otherwise, please post how far you have got and we can help from there.

Cheers.