Hi Karlson,

I am trying to attach an example in image format to explain it better.

In First image, R1C1 (Row 1 - Column 1 ) is having number 8. The second image is the same grid which I have rotated by 180 degree angle and now the number 8 is in R9C9.

The condition in Symmetric Unequal sudoku is that same number cannot be in a cell which is rotated by 180 degrees. Hence, if 8 is in R1C1 it cannot be in R9C9. Hope this clarifies.

In Antiknight, a number cannot repeat in another cell which is at a knights step as in Chess. In the image below, R5C5 has the number 5 in it. Other cells which are at a Knight's step (as in chess ) from this cell are highlighted in yellow color. Hence the number 5 cannot be placed in any of these cells which are colored yellow. Hope this is what you were looking for in Anti Knight Sudoku.

Rishi (purifire)

I hope I have made a correct assumption of your problem with Anti Knight Sudoku Karlson :)

Rishi

If you want more practise Anti Knight puzzles to solve, there are about 10 of them on my blog: http://rohanrao.blogspot.com/search/label/Anti%20Knight%20Sudoku

Rohan.

@all

Thank you very much for the Illustration and help.

The language (my translation) was the problem in "Anti Knight Sudoku".
In german the figur called "Pferd" (translation in english = horse).

Symmetric unequal sudoku is now no problem also too.

I´am looking forward for the weekend.

Many greetings

Karlson

Edited by Karlson 2010-07-06 11:36 PM

Sorry if I go back to the Between Sudoku (or Sandwich sudoku..)

the instructions say that "if there is MORE THAN ONE CELL between two given digits.... only digits inbetween the given can be used.
But in the example (and in Jan's explanation a few posts ago) the same applies also when there is EXACTLY ONE CELL between two given digits. for example, between 7 and 9 in row 9 the is EXACTLY ONE CELL (and not MORE THAN ONE CELL), and the digit 8 is placed. Is this just a coincidence? Could another digit (for example 3) be used? Or the instructions are misleading?

In the diagram, MORE THAN ONE CELL BETWEEN TWO GIVEN DIGITS occur only in row 5 and in column 5, while there are many more examples of EXACTLY ONE CELL BETWEEN GIVEN DIGITS.
Should the instructions say "if there is AT LEAST ONE CELL BETWEN TWO GIVEN DIGITS IN THE SAME ROW OR COLUMN????)

Please clarify.
Stefano

Stefano,

You are correct.
The instruction should be "if there is AT LEAST ONE CELL BETWEN TWO GIVEN DIGITS IN THE SAME ROW OR COLUMN, ......"

Deb

Sudoku Booklet (12 pages, password protected) is uploaded here

Note that this booklet does not have the examples and the Rules.It only has points and the Sudokus.

I think this should be mentioned somewhere on the webpage, so that people who expect it, can be informed in time.

Best of luck to everyone, I am getting to participate after some time, hope I do well.

This was great fun, as LMI mocks always are. Special thanks to Janek, whose puzzles were exceptionally well-written and include some clever new variants.

Good luck to all! I promise you will enjoy these.

I'll second Ziti's comment that this was an excellent test with many great puzzles in these styles. Many clever work-ins and a good challenge overall. Thanks janoslaw.

The bonus points is not mentioned in the IB.
Bonus 5 minutes per minute saved will be given to those who'll have got all correct.

I agree with Jason and Thomas... The puzzles were very well made ..... had a wonderful time having a go at them.

Great set of puzzles.
Most of the variants had the variant rule applied in multiple ways.

My speed did not allow me to even have a look at the classics :(

But overall loved the test :)

Very nice puzzles, I had a lot fun. If someone organize the world puzzlemaking championship, Jan certainly would be on the top, too.

Congratulations to Thomas Snyder, Fred Stalder, Rohan Rao and Jakub Ondrousek for topping in LMI July Sudoku Test - Classic Look-Alikes

There were 158 participants, out of which 126 got non-zero scores.
Thanks you everyone for participating.

Looks like everyone liked the Sudokus by janoslaw.
The timing of the the test (2 hours) seemed just perfect, with exactly one player completing the test.

Overall a successful Monthly Test for LMI, with so many players turning up for Sudokus.

Thank you so much janoslaw.

Amit, you got to look at the Classics. They are very artistically crafted.

Here are some blog entries that you would not like to miss

Nikola Zivanovic - http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&l...
Rohan Rao - http://rohanrao.blogspot.com/2010/07/indian-sudoku-championship-jul...
Thomas Snyder - http://motris.livejournal.com/120480.html

Thanks to the respective authors.

I am not able to see the results when using Firefox browser. Using IE7, it looks fine.

Wonderful test !
It was also my best result in an online tournament.

I liked every grid, they were very well constructed, thanks to Jan for this wonderful work !

The 9*9 grid "No 3 odd/even in line Sudoku" was difficult and very beautiful to solve. It took me long time to solve, but it is the grid that my direct competitors did not solve, that made the difference for the 2nd place, as the first place was to hard to reach against Thomas, who did a great performance !

Thanks to LMI for these very well organized tests !

Fred

Do you have adobe flash player installed? Check here in FireFox http://www.adobe.com/software/flash/about/

I apologize if I've missed this, but has the password been posted post-test? I was unable to compete over the weekend, and I'd like to try these out this week if possible.

Password for every test is posted in the test page, in this case http://logicmastersindia.com/M201007S/
Anyway, the password for quick reference is LMI_m1007S_CLAlikes