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Diagonal Vision — LMI March Sudoku Test — 10th-12th March60 posts • Page 1 of 3 • 1 2 3
Should the diagonals be marked in the "Anti-Diagonal Sudoku"?
Will it be better if the diagonals be marked in the "Anti-Diagonal Sudoku"?
OptionResults
Yes, it will be much better8 Votes - [22.86%]
No / does not matter27 Votes - [77.14%]
View Results

@ 2012-03-01 7:10 PM (#6828 - in reply to #6826) (#6828) Top

Fred76




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Fred76 posted @ 2012-03-01 7:10 PM

xevs - 2012-03-01 4:43 PM

In battle arrow sudoku, it seems that "all possible arrows IN NON-CLUED CELLS are shown".
Is that right?


No, it's not right.
All possible arrows are shown.
But don't forget that there is an arrow only if a digit repeats EXACTLY ONCE in a given direction. If a digit repeats twice or more, there is no arrow.

The fact that there is no arrow in clued cells on the example grid is only for aesthetic reasons.

Fred
@ 2012-03-01 11:46 PM (#6829 - in reply to #6825) (#6829) Top

Fred76




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Fred76 posted @ 2012-03-01 11:46 PM

Nikola - 2012-03-01 3:30 PM

To be well prepared for the test, I have to start to live diagonally. From now my keyboard is slightly slanted, I walk in a zig-zag, cross the street only diagonally and please tell everyone who see me in the car these days to slow down.

N
..i
...k
.....o
.......l
........a


Indeed: It's a good strategy if you want to have a chance to win this tournament
@ 2012-03-02 1:33 AM (#6830 - in reply to #6828) (#6830) Top

xevs



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xevs posted @ 2012-03-02 1:33 AM

Oops, I see clearly now.
I had to read the rule carefully. (of course, that is another very important stratagy to win tournaments ;-) )
@ 2012-03-02 6:08 AM (#6831 - in reply to #6828) (#6831) Top

Administrator



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Administrator posted @ 2012-03-02 6:08 AM

French version of the instruction booklet is available - Download | View
@ 2012-03-02 9:33 AM (#6832 - in reply to #6831) (#6832) Top

vopani



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vopani posted @ 2012-03-02 9:33 AM

I find it convenient when the diagonal lines of Anti Diagonal are given. It doesn't matter much but maybe if others prefer it too, it could be added.

Looking forward to a 'sudoku' test (after more than a month).
@ 2012-03-02 12:18 PM (#6834 - in reply to #6825) (#6834) Top

prasanna16391



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prasanna16391 posted @ 2012-03-02 12:18 PM

Nikola - 2012-03-01 3:30 PM

To be well prepared for the test, I have to start to live diagonally. From now my keyboard is slightly slanted, I walk in a zig-zag, cross the street only diagonally and please tell everyone who see me in the car these days to slow down.

N
..i
...k
.....o
.......l
........a


M
..e

....t
......o
........o

^^ because my actual name slanted would take far too much space. I'm looking forward to this too. I wonder if Fred has tried the revenge methods we talked about on facebook...
@ 2012-03-02 1:17 PM (#6835 - in reply to #6828) (#6835) Top

purifire




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purifire posted @ 2012-03-02 1:17 PM

First of all... great looking grids Fred.... will be nice to make a comeback to LMI test with your test....

And here is some news for solvers which is not related to this test!!!

Adobe PDF Reader X is the new free product from Adobe. It allows you to add text directly to a pdf. People like me who have printer issues can now open the pdf and solve directly instead of creating grids or pasting in ms paint and then solving. The link for download is added below.

I know that LMI already has an online interface for sudoku. But this is helpful for puzzle tests and other sudoku competitions around the globe where printing is needed. Hope this is helpful to ppl.

Adobe PDF Reader X

Rishi

Edited by purifire 2012-03-02 1:19 PM
@ 2012-03-02 9:44 PM (#6836 - in reply to #6834) (#6836) Top

Fred76




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Fred76 posted @ 2012-03-02 9:44 PM

prasanna16391 - 2012-03-02 12:18 PM

I wonder if Fred has tried the revenge methods we talked about on facebook...


Haha ! Grids were hard enough ! I didn't to try to make them harder
Last time we authored a test at LMI ( http://logicmastersindia.com/lmitests/?test=M201103S ) nobody achieve to finish all the grids correctly in time, so this time I hope it'll not be the case

Untouch sudokus that I posted on my blog last week were initially planned as 13th grid for this test: http://sudokuvariante.blogspot.com/search/label/Untouch (untouch N°1 for the IB and untouch N°2 for the test).

Fred
@ 2012-03-03 2:46 AM (#6837 - in reply to #6832) (#6837) Top

debmohanty




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debmohanty posted @ 2012-03-03 2:46 AM

Rohan Rao - 2012-03-02 9:33 AM
I find it convenient when the diagonal lines of Anti Diagonal are given. It doesn't matter much but maybe if others prefer it too, it could be added.

Google search for Anti Diagonal Sudoku showed this link at the top - http://rohanrao.blogspot.in/2010/03/rules-of-anti-diagonal-sudoku.h...
@ 2012-03-03 2:48 AM (#6838 - in reply to #6832) (#6838) Top

Fred76




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Fred76 posted @ 2012-03-03 2:48 AM

Rohan Rao - 2012-03-02 9:33 AM

I find it convenient when the diagonal lines of Anti Diagonal are given. It doesn't matter much but maybe if others prefer it too, it could be added.

Looking forward to a 'sudoku' test (after more than a month).


All players can answer the poll in the beginning of this thread.

From my point of view it does not matter, but as I don't play, I'll not answer the poll.
Rohan, I noticed that anti-diagonal that are on your blog have no diagonal lines given . But I can add them if a majority of players want, there is no problem for me.

Fred
@ 2012-03-03 5:41 AM (#6839 - in reply to #6837) (#6839) Top

Fred76




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Fred76 posted @ 2012-03-03 5:41 AM

debmohanty - 2012-03-03 2:46 AM

Rohan Rao - 2012-03-02 9:33 AM
I find it convenient when the diagonal lines of Anti Diagonal are given. It doesn't matter much but maybe if others prefer it too, it could be added.

Google search for Anti Diagonal Sudoku showed this link at the top - http://rohanrao.blogspot.in/2010/03/rules-of-anti-diagonal-sudoku.h...


Yes, but we must admit that this guy, Mister Rohanrao Blogspot, doesn't look very serious ! Does anybody know him ?
@ 2012-03-03 7:35 AM (#6840 - in reply to #6774) (#6840) Top

zachpuzzle



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zachpuzzle posted @ 2012-03-03 7:35 AM

This will be the first sudoku test that i participate instead of doing afterward so i am so excited
@ 2012-03-03 10:07 AM (#6841 - in reply to #6840) (#6841) Top

vopani



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vopani posted @ 2012-03-03 10:07 AM

Ok people. I lose.

There's been some major problem with my blog (which is supposed to be resolved by 1st week of March), so I'm hoping to start posting again from Monday :-)
@ 2012-03-03 11:30 AM (#6842 - in reply to #6839) (#6842) Top

prasanna16391



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prasanna16391 posted @ 2012-03-03 11:30 AM

Fred76 - 2012-03-03 5:41 AM

Yes, but we must admit that this guy, Mister Rohanrao Blogspot, doesn't look very serious ! Does anybody know him ?


I'm not sure.. I think he's some foreigner...

Rohan Rao - 2012-03-03 10:07 AM

Ok people. I lose.

There's been some major problem with my blog (which is supposed to be resolved by 1st week of March), so I'm hoping to start posting again from Monday :-)


Looking forward to it Mister Rohanrao Blogspot.
@ 2012-03-03 2:52 PM (#6843 - in reply to #6840) (#6843) Top

Fred76




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Fred76 posted @ 2012-03-03 2:52 PM

zachpuzzle - 2012-03-03 7:35 AM

This will be the first sudoku test that i participate instead of doing afterward so i am so excited


Great !
@ 2012-03-05 12:08 AM (#6844 - in reply to #6774) (#6844) Top

prasanna16391



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prasanna16391 posted @ 2012-03-05 12:08 AM

Should've kept "no" and "does not matter" as two separate options in the poll, now the people who wanted it might get out voted by people to whom it didn't matter. Of course this is in hindsight, it just struck me.
@ 2012-03-06 9:11 AM (#6848 - in reply to #6774) (#6848) Top

Administrator



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Administrator posted @ 2012-03-06 9:11 AM

Examples Online

All examples are available online now. Please check the submission page, and report any inconvenience.


@ 2012-03-07 1:59 PM (#6853 - in reply to #6774) (#6853) Top

David McNeill



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David McNeill posted @ 2012-03-07 1:59 PM

Hope to participate in this test. Is it possible to mark the arrows in a paler colour in Arrows Battle Sudoku?

Thank you,

David McNeill.
@ 2012-03-07 2:55 PM (#6854 - in reply to #6853) (#6854) Top

Fred76




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Fred76 posted @ 2012-03-07 2:55 PM

David McNeill - 2012-03-07 1:59 PM

Hope to participate in this test. Is it possible to mark the arrows in a paler colour in Arrows Battle Sudoku?

Thank you,

David McNeill.


Done for the test grid !

Fred
@ 2012-03-09 3:05 AM (#6856 - in reply to #6854) (#6856) Top

Fred76




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Fred76 posted @ 2012-03-09 3:05 AM

As there is a big majority in the poll who said that it were not better to have marked diagonal in the anti-diagonal sudoku (or it does not matter) , I'll not add them.
Sorry for the 7 people who voted for marked diagonals in the anti-diagonal sudoku, I hope you'll have fun solving this grid despite that.

Fred
@ 2012-03-09 4:03 AM (#6857 - in reply to #6856) (#6857) Top

Para



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Para posted @ 2012-03-09 4:03 AM

Fred76 - 2012-03-09 3:05 AM

As there is a big majority in the poll who said that it were not better to have marked diagonal in the anti-diagonal sudoku (or it does not matter) , I'll not add them.
Sorry for the 7 people who voted for marked diagonals in the anti-diagonal sudoku, I hope you'll have fun solving this grid despite that.

Fred


I just find it handier to know any marked diagonal means different digits.
@ 2012-03-09 10:44 AM (#6860 - in reply to #6857) (#6860) Top

Administrator



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Administrator posted @ 2012-03-09 10:44 AM

Sudoku instructions in Chinese in sudokufans.org.cn forum
@ 2012-03-09 1:25 PM (#6861 - in reply to #6774) (#6861) Top

swaroop2011




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swaroop2011 posted @ 2012-03-09 1:25 PM

Please help me out to solve this "QUEEN SUDOKU" further...
I am thereby attaching a photo of how much i was able to solve(logically).
I dont want to solve it by guess as this is the practice puzzle..




(queen_sudoku.png)



Attachments
----------------
Attachments queen_sudoku.png (18KB - 3 downloads)
@ 2012-03-09 2:34 PM (#6862 - in reply to #6861) (#6862) Top

prasanna16391



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prasanna16391 posted @ 2012-03-09 2:34 PM

swaroop2011 - 2012-03-09 1:25 PM

Please help me out to solve this "QUEEN SUDOKU" further...
I am thereby attaching a photo of how much i was able to solve(logically).
I dont want to solve it by guess as this is the practice puzzle..


I got through this one by a complex work through of where the 9s can and can't be, first of all I'd suggest you put the 8 in R1C1, as the 5-7 pair take up the below row and the 9 in the middle omits a 9 in either of the main diagonals. After that, either just look at the 9s and think hard about the possibilities with the queen rule, or find another way and tell me as well
@ 2012-03-09 5:21 PM (#6863 - in reply to #6862) (#6863) Top

Fred76




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Fred76 posted @ 2012-03-09 5:21 PM

prasanna16391 - 2012-03-09 2:34 PM

swaroop2011 - 2012-03-09 1:25 PM

Please help me out to solve this "QUEEN SUDOKU" further...
I am thereby attaching a photo of how much i was able to solve(logically).
I dont want to solve it by guess as this is the practice puzzle..


I got through this one by a complex work through of where the 9s can and can't be, first of all I'd suggest you put the 8 in R1C1, as the 5-7 pair take up the below row and the 9 in the middle omits a 9 in either of the main diagonals. After that, either just look at the 9s and think hard about the possibilities with the queen rule, or find another way and tell me as well


This grid is perhaps a bit hard for the instructions booklet. Prasanna is right, you must study the 9's and try to find a contradiction. I think it's the only possibility to crack this grid.
For example, if you try to put a 9 in R6C1, then you have a 9 in R9C3 (only option is that box), then it has to be in R8C9 (only option in this row), then in R4C7 and then you cannot place a 9 in column 8.

So you know that R6C1 is not a 9, and then it becomes easier to finish the grid.



(queen_swaroop.png)



Attachments
----------------
Attachments queen_swaroop.png (19KB - 4 downloads)
Diagonal Vision — LMI March Sudoku Test — 10th-12th March60 posts • Page 1 of 3 • 1 2 3
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