Fiendish logic puzzle (Su doku)

[partygirluk]

Sudoku is a fun new logic puzzle that has started being produced in the papers over here, along with the daily crossword, bridge column etc.

There is a 9 by 9 grid make up of 9 3*3 squares. Each row, column and box must have the numbers 1-9 exactly once. Today's was a tough one.

9 - 1 : - - 2 : - - 3
- 8 - : - 4 - : 6 - -
- - 3 : - - 1 : - - -
______________________
- - - : 3 - - : 1 5 -
7 - - : - - - : - - 9
- 9 4 : - - 8 : - - -
______________________
- - - : 6 - - : 5 - -
- - 9 : - 7 - : - 3 -
4 - - : 2 - - : 8 - 7

[Caruso329]

wtf do you do?

[partygirluk]

You have to fill in all the blanks.

So, we have a 3 in row C, box i) and in Row A box iii)
Therefore, there must be a 3 in Row B box ii), and there are only two spaces available Column D or F. But we already a 3 in Column D (Row D), therefore Row B Column F (B,F) is a 3.

[mmbt0ne]

Oh ok, I think I get it now. So in each group of 3 rows, the same number is in different sections, and in all 9 rows, it's in nine different spaces.

This is going to keep me hella entertained in lecture today. I like it.

[partygirluk]

Each column contains the numbers 1,2,3,4,5,6,7,8,9 once.
Each row contains the numbers 1,2,3,4,5,6,7,8,9 once.
Each 3*3 box contains the numbers 1,2,3,4,5,6,7,8,9 once.

Go to http://www.timesonline.co.uk/section/0,,18209,00.html

for more puzzles. They are each ranked by difficulty.

Today's was "fiendish".

[Soul Daddy]

I'm having LSAT flashbacks.

[partygirluk]

[ QUOTE ]
I'm having LSAT flashbacks.

[/ QUOTE ]

What is an LSAT?

[Soul Daddy]

Law School Admissions Test

There is an entire section (or two if you're unlucky) comprised of logic games/puzzles. I used to think things like this were fun, but practicing them for months under strict time constraints has conditioned me to cringe whenever I see anything similar.

[pudley4]

<font class="small">Code:</font><hr /><pre>

961|582|473
287|943|615
543|761|928
------------
628|397|154
715|426|389
394|158|762
------------
872|639|541
159|874|236
436|215|897</pre><hr />

[partygirluk]

How long did it take you?

[Caruso329]

<font class="small">Code:</font><hr /><pre>
941|8-2|723
287|943|615
--3|7-1|948
628|397|154
735|416|289
194|528|376
372|684|591
869|175|432
415|239|867
</pre><hr />

Apparently I effed up.

[mostsmooth]

i did it and forgot about the 1-9 in each box. im gonna do it again following all the rules. i think it will be easier actually.

[mostsmooth]

ok, as expected, much easier when following all the rules
probably took about 10 minutes or so in between my job activities /images/graemlins/cool.gif

[pudley4]

[ QUOTE ]
How long did it take you?

[/ QUOTE ]

&lt; 30 minutes, including drawing my diagrams and posting.

This is exactly the same type of puzzle they have in those Dell Crossword Puzzle magazines. They recently had one that was 16x16, using all the numbers 1-9 plus the letters A-G.

[mostsmooth]

[ QUOTE ]
[ QUOTE ]
How long did it take you?

[/ QUOTE ]

&lt; 30 minutes, including drawing my diagrams and posting.

[/ QUOTE ]
you should try it with excel
/images/graemlins/cool.gif

[Utah]

Okay. What is the trick to solving this stupid ass thing. I cant figure it out.