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LMI November Sudoku Test - Renban Groups
   LMI Tests -> Monthly Sudoku and Puzzle Tests69 posts • Page 1 of 3 • 1 2 3
zhergan
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-04 2:00 AM (#2399 - in reply to #2397) (#2399) Top




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Here comes my new 6x6 shifted sudoku design.

Regards,

Zafer



(shiftedsudwithrbgex2.JPG)



Attachments
----------------
Attachments shiftedsudwithrbgex2.JPG (18KB - 8 downloads)
debmohanty
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-04 8:25 AM (#2400 - in reply to #2394) (#2400) Top



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Location: India
Rohan Rao - 2010-11-03 8:36 PM

In the note for Shifted Sudoku, it says 'The numbers 1~6 must not occur in standard 2x3 boxes'. 'Must not occur' or 'May not occur'?

Rohan, it is "May not occur".
It is basically a Toroidal Sudoku with special shapes of 2X3 or 3X3 blocks. [ So it should be much easier than a toroidal sudoku ]

Zafer, thanks for uploading another example.
vopani
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-04 11:12 AM (#2401 - in reply to #2400) (#2401) Top


WSPC Organizer

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Ok. Got it. Thanx Zafer and Deb.

Looking forward to this test :-)
zhergan
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-04 1:09 PM (#2402 - in reply to #2399) (#2402) Top




Posts: 32
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Location: Turkey
Hi to all. Here comes the answer of my second 6x6 shifted sudoku example. You can see the duplicating digit or digits inside the standard 2x3 blocks.

Spoiler: show


Thanks Deb for your help on spoiler usage.

Regards,

Zafer

Edited by zhergan 2010-11-04 1:15 PM
gramar
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-09 2:11 AM (#2432 - in reply to #2402) (#2432) Top




Posts: 9

Location: United Kingdom
I'm looking forward to this one and have managed to complete all the 6 x 6s in the instruction booklet apart from one - the Symmetric Unequal Sudoku. I expect I'm missing something really obvious but I can't work out which cells are 180 degrees symmetric to each other.
Can anyone try and explain it to me please? Thanks.
zhergan
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-09 2:36 AM (#2434 - in reply to #2432) (#2434) Top




Posts: 32
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Location: Turkey
Hi,

In the symmetric unequal sudoku cells that are 180° symmetric to each other
cannot have same digits.

Keeping in mind that R corresponds to row and C corresponds to column; If
we talk about 6x6 R[n]C[k] can never have the same digit as R[7-n]C[7-k]
all n, k from 1 to 6 and if we consider 9x9 this time R[n]C[k] can never
have the same digit as R[10-n]C[10-k] for all n, k from 1 to 9 (of course
not both 5 same time).

Try to apply this rule once. You'll see it works. Hope it is more clear now.

Regards,

Zafer
zhergan
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-09 2:41 AM (#2435 - in reply to #2434) (#2435) Top




Posts: 32
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Location: Turkey
And who are interested about symmetric unequal sudoku may try to solve my 9x9 example on LM Germany site with the following address:

http://www.logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000...

It is not a hard one also. You may try it as an exercise.

Zafer
gramar
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-09 3:38 AM (#2436 - in reply to #2435) (#2436) Top




Posts: 9

Location: United Kingdom
Yes - I've got it now! Thanks for taking the time to reply - I've never come across this sudoku variant before. It's always great to come across a new puzzle type so I will go and try out the 9 x 9 now!

Regards. Christine
debmohanty
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-09 8:47 AM (#2437 - in reply to #2435) (#2437) Top



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Some more Symmetric Unequal Sudokus from our older tests (without renban constraints)

From Classic Look Alikes

Click here to solve online



From Classic Look Alikes

Click here to solve online



from Mock 12

Click here to solve online




from Mock 12

Click here to solve online
lmunira
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-09 1:11 PM (#2443 - in reply to #2377) (#2443) Top




Posts: 8

Location: India
Hi,
I cannot see any link to the IB for the test. Is there something that I am missing?
Munira.
debmohanty
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-09 1:17 PM (#2445 - in reply to #2443) (#2445) Top



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Location: India
lmunira - 2010-11-09 1:11 PM

Hi,
I cannot see any link to the IB for the test. Is there something that I am missing?
Munira.
If you are using a small screen computer, please scroll towards your right.
We are having this problem for a while now. High time we get it fixed :-)
lmunira
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-09 1:37 PM (#2446 - in reply to #2445) (#2446) Top




Posts: 8

Location: India
Thanks,
Have got it. Silly of me.
Munira.
Pyrrhon
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-10 1:51 AM (#2451 - in reply to #2376) (#2451) Top



Location: Germany
Renban is a puzzle type invented (so far as I know) by Inaba Naoki. You can find his examples at http://inabapuzzle.com/honkaku/renban.html . (All digits occur in each row and column, all cages are renban groups.)

The oldest sudoku variant with renban groups is Hanidoku ( http://www.hanidoku.com/ ).

Other renban at http://www.sachsentext.de/en/node/1156 and other hanidoku at http://www.sachsentext.de/en/taxonomy/term/162 .

Pyrrhon
debmohanty
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-10 11:55 AM (#2452 - in reply to #2451) (#2452) Top



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Location: India
Pyrrhon - 2010-11-10 1:51 AM

Renban is a puzzle type invented (so far as I know) by Inaba Naoki. You can find his examples at http://inabapuzzle.com/honkaku/renban.html . (All digits occur in each row and column, all cages are renban groups.)

The oldest sudoku variant with renban groups is Hanidoku ( http://www.hanidoku.com/ ).

Other renban at http://www.sachsentext.de/en/node/1156 and other hanidoku at http://www.sachsentext.de/en/taxonomy/term/162 .

Pyrrhon

Thank you for sharing history of Renban. I'm sure this will be informative to many players.

Also, for those who don't know, Pyrrhon's website http://www.sachsentext.de contains list of many many Sudoku variants. You google for any Sudoku variant, and sachsentext.de is most likely to be in 1st page.

Thanks Uwe for maintaining such a wonderful website.
zhergan
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-10 2:00 PM (#2453 - in reply to #2452) (#2453) Top




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Location: Turkey
debmohanty - 2010-11-10 11:55 AM

Thank you for sharing history of Renban. I'm sure this will be informative to many players.

Also, for those who don't know, Pyrrhon's website http://www.sachsentext.de contains list of many many Sudoku variants. You google for any Sudoku variant, and sachsentext.de is most likely to be in 1st page.

Thanks Uwe for maintaining such a wonderful website.


I also want to thank Uwe (aka Pyrrhon) for sharing information about Renban. Some puzzlers may not be familiar with this subject. I also follow his great site http://www.sachsentext.de and learn about different variants Uwe deals not only with sudokus and the site has a lot of different puzzle types also. But I know that solving Uwe's designs is always enjoyable. He shared some of them in LM German puzzle portal also. Maybe Uwe will manage to conduct another monthly sudoku contest for LMI in the forthcoming months. I think it will be a great.

Regards,

Zafer

Edited by zhergan 2010-11-10 2:04 PM
davmillar
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-11 11:37 PM (#2462 - in reply to #2376) (#2462) Top





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Munira (and everyone else with small screens): I think I've found a fix and have tested it out on my local copy of the authors page. Deb will be adding the fix to the test pages sometime soon, which should work for almost everyone. Sorry about the inconvenience!
Administrator
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-12 1:38 PM (#2463 - in reply to #2376) (#2463) Top


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Puzzle booklet (1 Title page + 10 pages of sudokus) is uploaded at the submission page. Here is the direct link
debmohanty
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-12 11:39 PM (#2469 - in reply to #2462) (#2469) Top



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Location: India
davmillar - 2010-11-11 11:37 PM

Munira (and everyone else with small screens): I think I've found a fix and have tested it out on my local copy of the authors page. Deb will be adding the fix to the test pages sometime soon, which should work for almost everyone. Sorry about the inconvenience!


Players with small screens - Please scroll towards right if you can't see the IB / PB.
David - thanks for helping in fixing this issue. We'll apply this technique in the next test.
zhergan
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-13 3:20 AM (#2470 - in reply to #2376) (#2470) Top




Posts: 32
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Hi to all,

The test starts within almost 2 hours. I wish all participants
the very best of luck. I hope you enjoy solving the sudokus.

Regards,

Zafer
rakesh_rai
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-13 5:01 PM (#2471 - in reply to #2470) (#2471) Top



Mean Minis (2020) Author

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Nice sudokus. I liked the Renban concept applied to solving the sudokus.
akash.doulani
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-13 8:36 PM (#2472 - in reply to #2376) (#2472) Top


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@rakesh. what is ur score?
rakesh_rai
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-13 9:08 PM (#2473 - in reply to #2472) (#2473) Top



Mean Minis (2020) Author

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Lets not discuss scores here till the test is ON. This time, I think we are able to see all scores lower than your score in the results page.
Administrator
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-13 10:22 PM (#2474 - in reply to #2473) (#2474) Top


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rakesh_rai - 2010-11-13 9:08 PM

Lets not discuss scores here till the test is ON. This time, I think we are able to see all scores lower than your score in the results page.
Rakesh, you are correct. After taking the test, you should be able to see your score along with all others who have got < than you.
Nikola
Subject: Re: LMI November Sudoku Test - Renban Groups @ 2010-11-13 11:27 PM (#2475 - in reply to #2474) (#2475) Top


Sudoku Day Author

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Very nice set of puzzles, I really enjoyed during the test. Thanks, Zafer!

Nikola
zhergan
Subject: RE: LMI November Sudoku Test - Renban Groups @ 2010-11-13 11:48 PM (#2476 - in reply to #2376) (#2476) Top




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Rakesh and Nikola for your kind words. I'm glad you liked them.

Regards,

Zafer
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