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Indian Sudoku Championship 2010

Indian Sudoku Championship 2010
Sudoku, dubbed as the hottest puzzle sensation since the Rubiks Cube gained worldwide popularity in early 2005. The first World Sudoku championship (WSC) was held in March 2006 in Lucca, Italy. The 5th WSC will be held in April 2010 in Philadelphia, USA. Logic Masters India in association with TechFest at IIT Bombay, invites you to test your logical skills in the Indian Sudoku Championship and get an opportunity to represent India at the WSC. All resident Indian nationals, irrespective of age, can participate in Indian Sudoku Championship. The sudoku-solving skills of contestants will be tested through the regular Classic sudokus as well as different sudoku variations which appear in the WSCs. Top rankers at the Indian Sudoku Championship will be eligible to represent India at the 5th World Sudoku Championship to be held in Philadelphia in April 2010.

Rules and Regulations
The Indian Sudoku Championship will consist of two online rounds on 3rd and 9th January 2010 to select the top 30 participants for the finals. There will also be an elimination round to select the top 30 from the on the spot participants on 23rd January 2010. The finals for these 60 participants will be held on 24th January 2010. Detailed instructions are available here

Championship page
For further details regarding the Indian Sudoku Championship please visit our championship page

All participants will have to register at the TechFest website to get their participant ID here.

Download Instruction Booklet

Download Puzzle Booklet 1 (Day 1)
Password is wa5endul
Download Solution Booklet 1 (Day 1)
Download Puzzle Booklet 2 (Day 1)
Password is sh9pylyj
Download Solution Booklet 2 (Day 1)
Download Puzzle Booklet 3 (Day 1)
Password is bu4tabeb
Password is Solution Booklet 3 (Day 1)

Download Puzzle Booklet 1 (Day 2)
Password is dskn7vytps
Download Solution Booklet 1 (Day 2)
Download Puzzle Booklet 2 (Day 2)
Password is njtnr2qdbh
Download Solution Booklet 2 (Day 2)
Download Puzzle Booklet 3 (Day 2)
Password is bdjms8bh3k
Download Solution Booklet 3 (Day 2)

The list of puzzles that appeared for the championship are:

Round 1
1. Classic Sudoku

Round 2
1. Odd-Even Sudoku
2. Diagonal Sudoku
3. Frame Sudoku
4. Sudoku XV
5. Irregular Sudoku
6. Consecutive Sudoku

Round 3
1. Outside Sudoku
2. Quadruple Sudoku
3. Magic Square Sudoku
4. No Knight Sudoku
5. Group Sum Sudoku
6. Toroidal Sudoku


1. Jan Mrozowski (Poland) - 1970
2. Jakub Ondrousek (Czech Republic) - 1910
3. Rohan Rao (India) - 1875
4. Jan Novotny (Czech Republic) - 1840
5. Nikola Zivanovic (Serbia) - 1730
6. Rishi Puri (India) - 1725
7. Ritesh Gupta (India) - 1655
8. Chen Cen (China) - 1585
9. Jakub Hrazdira (Czech Republic) - 1550
10. Rakhel Parida (India) - 1435
10. Puneet Goenka (India) - 1435

Indian results

1. Rohan Rao - 1875
2. Rishi Puri - 1725
3. Ritesh Gupta - 1655
4. Rakhel Parida - 1435
4. Puneet Goenka - 1435
6. Gaurav Korde - 1360
7. Priyanka Gupta - 1355
8. Pooja Gaddyan - 1345
9. Neha Sharma - 1295
9. Pratik Poddar - 1295
9. Gnyanendra Kumar - 1295

Complete Results

There were totally 169 participants.
Congrats to everyone!

Reader's Digest Sudoku


Jason Z. said...

Rohan, can anybody take part in the competition? The Techfest website seems like it is associated with some sort of school -- never mind the fact that I am not an Indian national :). Please let me know.

I hope you had a nice end of 2009.

Rohan Rao said...

Yes foreign participants are allowed to participate in the online rounds :-)

Rohan Rao said...

Very nice set of puzzles.

Those who missed the 1st round, make sure U dont miss the 2nd!

puneet said...

yes indeed the puzzles wer gud especially d classic ones..........

Jason Z. said...

Thanks for letting me know about this, Rohan. It was a fun time. I just hope they got my second round submission! After submitting and then checking email I came back to a blank sheet! :o

I hope you did well. These were fun puzzles.

Rohan Rao said...

There were some issues about submission but I guess the event as a whole went pretty smoothly.
I think I did pretty well (if all my answers are correct!), just waiting for the results tomorrow...

Rohan Rao said...

Wow! I suprised myself! :-)

Jason Z. said...

That is a terrific score Rohan! The Indian team looks to be very strong this year.

Pratik Poddar said...

Happy to see my name there :D

I post lots of mathematics problems and puzzles on my blog:


Rohan Rao said...

Thanks Jason...

I hope I can make it in the top 4 :-)

Finals is on 24th Jan...

L'ours said...

Very impressive score, congrats !
I couldn't participate but I will print the puzzles asap.
I hope you will do even better on 24th... perfect score, I mean. :-)

Fred76 said...

Congrats ! very good score ! I've done the puzzles after the competition (5h30 A.M. is not an hour to solve grids, IMO !) The toroidal grid of 2nd day is very disturbing !

I Hope success for you and for "L'ours" (French qualifications) on 24th !!!


Rohan Rao said...

Thanks L'ours and Fred.

I found Group Sum of Day 2 tough as well... Toroidal was crazy :-|

Kamal Lohia said...

Hi Rohan
Congrats for your performance in the various contests.
I am unable to see the contest files. Can you please check it over?

Rohan Rao said...

You can now download and check them out.