A big thank you to all core organizers Rakesh, Amit, Priyam, Kumaresan and Akash for making this event possible in an otherwise gloomy year. Special congrats for putting out the set without any broken sudokus! Tremendous effort !
Heartfelt thanks to all authors Akash, Cedomir, Jan Novotny, Nikola, Priyam, Kumaresan, Rakesh and Tawan. Sudokus were of a very high quality and were challenging and really enjoyable :) .

A Very big thank you to all the organisers for a wonderfully organized event. Like others have already mentioned it perfectly mimicked the offline event. The sudokus were of great standards and were really fun to solve. I just loved the mean minis, though my score for that round is a silly goof up from my end and not a reflection on quality of the sudokus :D Great job guys and congrats to all the winners :)

Thank you to all the organisers and the authors for organizing such a flawless online event with such amazing sets of sudokus. Thoroughly enjoyed the whole of it.
Congratulations to all the winners.

At least with way too many puzzles for the time limit (for my skill level) I was able to pick the ones I thought I'd be best at. Was ... 'mostly' right, but I did mess a few up. I have to say, the mechanism for distribution, timing, and submission with instant grading is pretty superb!

I thoroughly enjoyed the event. Its first time and havent given five rounds in a stretch till now. Whatever I had solved, it had beautiful solve paths. I loved the Core sudoku in the last round, the way the loops interacted to get the numbers. Its a beautiful construction. solved or attempted maximum 5 or 6 sudokus in any round. So others must also be constructed with interesting logical solve paths. will try others leisurely.

Seeing these many sudokus in all the rounds, with the testing behind and some sudokus might have not been considered, cannot imagine how many would have been constructed and how much coordination was required to handle the event so smoothly. It really shows the backend effort.

Kudos to all the authors and organizers!!

I enjoyed the event immensely. I am sure there was a lot of hard work put in by the organisers and the authors, and this effort is very much appreciated.

This was my first ISC and it was an extremely interesting day. The puzzles were great and the organizing was so smooth without any glitches. Big thanks to the puzzle creators and testers and the whole team of organizers! You deserve a great applause.

how can I give online test or competition?

Puzzles in this championship are of very good quality. Thanks to all the authors and organisers.

Will there be some posting of the international/non-qualified-for-prizes scores? I'd enjoy seeing how I stacked up against other non-India folk, and don't actually know my own score, with the instant scoring being unavailable for round 5 (where I did one, but maybe it wasn't the right answer).

LMI thanks all the international authors and test solvers for their valuable contribution to ISC 2020.

Thanks Cedomir Milanovic, Jan Novotny, Nikola Zivanovic, Tawan Sunathvanichkul, Bram De Laat, Branko Ceranic, Deyan Razsadov, Ken Endo, Tiit Vunk, Wang Weifan, Yanzhe Qiu and Yuhei Kusui!

what about overall rankings?

Solution booklet

The Solution Booklet is now available .

Any certificate being given this year?

A big thank you to everyone who participated in my round. I am glad you all liked it so much and am honoured :)

Are certificates being given this year?

I would like to play the puzzles, even though the competition has closed. I am receiving a message that the plug-in isn't working and I assume this is why I can't locate the password to open the puzzle booklet. Can the passwords be made available, please, or could someone kindly explain how I can access the puzzles? Many thanks.

Yes, but our priority has been to start the next year's contests because of how late the ISPC was held last year. Getting back on schedule is essential if we are to prepare towards a World Championship under normal schedules again.

Give us a little time.

Thanks.

Any help required?

It's April 2021. What about certificates /prizes for the year 2020?

kindly help for registration to classic sudoku championship...i am new here