An email was sent on 25-May regarding IPC & ISC. Players who login frequently to the forum in last few days were excluded from the email.

Thanks deb.

Some the practice Sudoku for ISC 2014.
Search 9 Sudoku
http://www.funwithpuzzles.com/2014/05/search-9-sudoku-daily-sudoku-...

Untouch Sudoku
http://www.funwithpuzzles.com/2014/05/no-touch-sudoku-daily-sudoku-...

Descriptive Pairs Sudoku
http://www.funwithpuzzles.com/2014/02/descriptive-pairs-sudoku-dail...

I will be preparing some more for ISC 2014 and will post it on my blog soon.

Some more practice. The Instruction Booklet's Inside Skyscrapers example was taken from the Instruction booklet of Best of LMI Mocks. Obviously, this means there is another one in the Puzzle Booklet. Note - it is under the name "Hidden" Skyscrapers. Also, I wrote one of these as practice for the World Sudoku Championship last year, and it can be found on my blog here . Note - this has diagonal arrows too which won't be there in the competition puzzle, but it is still nice practice nonetheless. For this puzzle, digits can repeat for diagonal arrows and same numbers can block each other as far as visibility goes.

There are Search 9s and Descriptive Pairs (there may be overlap with the Instruction booklet as I used some of my old Sudokus as examples) on my blog.

The rest of it is mostly common types. The Expanded Sudoku is a slight tweak to the ISC 2013 variant, Overlapping Sudoku, so that should be helpful as far as this form of thinking goes.

Beginners' Sudoku Contests should help for all the common variants.

The only thing left is Fortress I think, there are two I quickly found on Bastien's blog, but you should find more with searching a little through the LMI Monthly Tests.

@ Prasanna - Points distribution?

Should be released tomorrow.

i want to participate isc 20014

Dear Madhavi, you can if you are alive. In puzzles and sudoku typo errors will cost you. Be careful and Good luck.

Since you have already registered, all you have to do is login on the link given below when it comes active on Sunday, and participate. I'd advise you to download the Instruction booklet in the same link, read it carefully, and ask any doubts you may have in the ISC Discussion thread (2nd link given below).

http://logicmastersindia.com/2014/ISC/

http://logicmastersindia.com/forum/forums/thread-view.asp?start=1&t... (please post any further conversations about ISC 2014 in this link)

Last year the bonus points allowed upto a max of 4 wrong cells ( I guess allowing for typos) but in this year's IB I do not see anything. So is my assumption correct that if there is even 1 wrong cell, a player does not get the bonus points?

Secondly a minor technicality in the IB. In the Bonus section it is mentioned "Players submitting all Sudokus will get seven points per minute saved as bonus". I thnk it would be better if we added "Players submitting all correct answers" or something to this effect. Technically I can submit all wrong answers too. Nothing major but just an observation.

Rishi

Instant Grading is enabled this year, so unless you keep submitting things wrong, you don't have to worry about that. :)

On line solving?

hi my name is neeraj kumar sahu

I want to participate this game .....also takes a good expirience

Hi Prasanna,
In Inside Skyscraper Sudoku, I wonder why below line is mentioned. Just want to make sure i am not missing anything since every cell can have 4 arrows under the given rules.

"
Not all possible arrows are marked."

It just means that converse rule does not apply. For example in XV sudoku all possible Xs and Vs are marked. Similarly in Consecutive sudokus all possible dots are marked.
But in Inside Skyscraper all possible arrows are NOT marked.

See R2C9 : It is valid put a left arrow, but the author didn't mark it.
See R5C1 there is no down arrow (only right arrow is marked)

Thanks Deb for clarifying.

Translations please :-)




Link to original article in Jagran : http://epaper.jagran.com/ePaperArticle/30-may-2014-edition-LUCKNOW-...

pretty good article.. Send it to TOI for translation.. :)

A bit about the authors for the Indian Sudoku Championship -

Frédéric Stalder, from Switzerland, began to create some sudokus in 2009. Most of his sudokus can be found on his blog http://sudokuvariante.blogspot.com/. He created sudokus for various magazines, for regional, national or online tournaments, including some here on LMI. As a competitive solver, he took part in World Sudoku championships since 2011, and is since this year the best representative of his country.

Nikola Zivanovic is from Serbia. He started a blog called LOGIKA 5 years ago but is currently inactive there. Recently, he has turned his efforts towards authoring Online competitions at the International level. In addition to some contests here on LMI, including the most recent Beginners' Sudoku Contest, his puzzles can be seen on various International tournaments like the 4th Sudokucup, the WPF Sudoku GP, etc. As a competitive solver, he is a regular fixture on the Serbian team since the first World Sudoku Championship in 2006 and has secured some impressive top 10 positions in the World Sudoku Championships over the years.

Bastien Vial-Jaime is a french puzzlemaker who runs the blog EnigmAttic - http://enigm-attic.blogspot.in/, where he publishes a weekly puzzle or sudoku variant. As a player, he is a regular member of the french team at both the WSC and WPC, and has secured some impressive top 10 positions in recent years.

Zuzana Hromcová is from Slovakia, and is one of the authors at slovaksudoku.com. There is a detailed description on their authors page, but to summarize - she regularly works with talented youth of Slovakia through the Youth League on the slovaksudoku website, has co-written some contests here on LMI, and Sudokucup 5.

In addition to these International authors, there are some contributions from the LMI team as well, namely myself and Deb Mohanty. Since you're already on LMI if you're reading this, Deb's basically the person who runs the site, and has also authored many contests here, including multiple National Championships. I have my own blog, but I'm not nearly as active as I used to be. My recent efforts, apart from writing puzzles for GM Puzzles and the recent Monthly Tests on LMI, have gone into starting a Patronage system for LMI. While the Championship is free, if you enjoy our contests, and want to give something back, please check it out.

I also thank the test solvers for the contest -
Tiit Vunk from Estonia.
Vladimir Portugalov from Belarus
Frédéric Stalder and Bastien Vial-Jaime helped with testing and feedback as well in addition to contributing puzzles.