LMI - Sudoku Mahabharat & ISC Qualifiers

[debmohanty]

Logic Masters India invites everyone to participate in Sudoku Mahabharat, a series of Sudoku contests. Similar to last year's Mahabharat, each contest will have significant number of classic Sudoku and will introduce 5 variations of one category. The difficulty will be lower than the monthly contests and length of each contest is of 90 minutes.

Here are the dates, for each of the rounds.

Standard Variations - (22nd-24th Aug)
Neighbours - (12th-14th Sep)
Odd-Even Variations - (24th-26th Oct)
Math (14th-16th Nov)
Outside (12th-14th Dec)
Twisted Classics (9th-11th Jan)
Converse (13th-15th Feb)
Irregular (12th-14th Mar)

Link for Sudoku Mahabharat 2015-16 : http://logicmastersindia.com/SM/2015-16sm.asp
Note that these rounds will serve as qualifiers for Indian Sudoku Championship 2016.

[debmohanty]

Link for Standard Variations round that starts tonight and is open through the weekend : http://logicmastersindia.com/SM/201508/

[debmohanty]

Link for Neighbours Variations round that starts tonight and is open through the weekend : http://logicmastersindia.com/SM/201509/

[Magoo]

Hats off to anyone who got the large Repeating Neighbours puzzle done in Round 2 while competing - I think it's taken me 2 or 3 hours all told after the competition to prove a solution!

[Prasanna16391]

Hats off to anyone who got the large Repeating Neighbours puzzle done in Round 2 while competing - I think it's taken me 2 or 3 hours all told after the competition to prove a solution!

Have you seen the walkthrough posted on the discussion thread for the contest? I hope that makes the variant easier to solve in the future. Here - http://logicmastersindia.com/forum/foru ... =79#M19395

[Magoo]

Thanks, Prasanna,

In fact I got all the steps mentioned in the walkthrough - in the end. It's just that proving the theoretical equality of such cells took me quite some time; and then having finally proved (I thought) all of those equivalences, I still struggled to complete the puzzle, and managed to break it - twice, in the same way. So I happily acknowledge that it's all my own dimness and error - but I stll found it a very hard puzzle indeed. Very impressive though.

[debmohanty]

Link for Odd Even Variations round that started last night and is open through the weekend : http://logicmastersindia.com/SM/201510/

[Prasanna16391]

Link for Math Variations round that started just now and is open through the weekend : http://logicmastersindia.com/SM/201511/

[detuned]

Looking at the results list, I'm feeling quite pleased to have finished this one!

[Magoo]

I felt there were one or two tough ones there, even for medium points. Well done though, Tom - irritated as I am by the oddity that you were the only person to knock me down a place in the last 24 hours of the competition...

[david mcneill]

Congratulations to my three UK team colleagues on beating me soundly in the Maths Variations contest. I hated the two hard puzzles - the large Group Sums and Repeating Neighbours. I could not find a logical solution to either and spent 60 minutes on them. The Group Sums had nice logic until about 60% of the way through. I couldn't find any logic in the other one. Of course, I should have guessed, but it was only supposed to be a friendly contest, wasn't it? The grapes are sour today.

[Magoo]

David, I'm not fit to clean your virtual boots let alone disagree with you. However: the big Group Sums certainly can solve by logic all the way through - I acknowledge that at about the 60% point, it might be quicker to bifurcate to the solution; Repeating Neighbours was from an earlier contest - you may mean Equal Product; and I really take issue with the idea that 'guessing' is cheating or ungentlemanly, however friendly the contest. I know your comment was tongue-in-cheek, of course, and honestly I can't remember if I guessed on any of these puzzles, but I certainly don't steel myself to avoid it; nor do I think I should.

[Magoo]

Well done to Tom and especially David on the Outside round. I have to say that I detest (i.e. am appalling at) all types of Skyscrapers puzzles, and rather than spending 20+ minutes making progress and eventually reaching a contradiction in the big one, I would have done better to clean up all the small puzzles and spot that I had entered the wrong row as my solution on a 3-point puzzle.

[Prasanna16391]

Link for Twisted Classics round that started just now and is open through the weekend : http://logicmastersindia.com/SM/201601/

[debmohanty]

Link for Converse Variations round that started and is open through the weekend : http://logicmastersindia.com/SM/201602/

[detuned]

Well done David on a top 10 result! I wasn't *too* far behind either

[DavidC]

Thanks Oh, um, er ... Well done David

David

[debmohanty]

Link for Irregular Variations round that started and is open through the weekend : http://logicmastersindia.com/SM/201603/