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Prime Exotica

Posted: Fri 14 Jan, 2011 7:29 am
by rakesh_rai
Logic Masters India announces January 2011 Sudoku Test - Prime Exotica

Date - 22nd and 23rd January
Sudoku Types - The test focuses on prime numbers and a few exotic variants
Length - 101 minutes
IB and Submission Link - http://logicmastersindia.com/lmitests?test=M201101S
Forum and Discussion Link - http://logicmastersindia.com/forum/foru ... sp?tid=252

Re: Prime Exotica

Posted: Fri 14 Jan, 2011 3:19 pm
by ronaldx
sounds fun, thanks!

Re: Prime Exotica

Posted: Sat 22 Jan, 2011 12:36 pm
by rakesh_rai
The test has started and there have already been some spectacular UK performances. Do try to participate, if you can manage to take out 101 minutes off your time.

Re: Prime Exotica

Posted: Sat 22 Jan, 2011 3:41 pm
by detuned
So that's code for David running rampage again presumably. I'll give this a shot when I get back from the shops.

Re: Prime Exotica

Posted: Sun 23 Jan, 2011 6:53 am
by rakesh_rai
There was an outage at LMI, but the site is now back up and running. The test timing will be extended by 24 hours.

Re: Prime Exotica

Posted: Sun 23 Jan, 2011 9:30 pm
by nickdeller
Damn - I had 36 seconds left to type a solution code in and wasn't quick enough to do it! :-(

Lovely test though, thank you! :-)

Re: Prime Exotica

Posted: Sun 23 Jan, 2011 10:53 pm
by detuned
I had a similar thing having just under 3 minutes to get the rossini out. I can't have failed to get the code in by more than 15 seconds :(

Re: Prime Exotica

Posted: Mon 24 Jan, 2011 7:48 pm
by drsteve
Interesting, although the point allocation seemed a bit off to me in places. No spoilers yet, as the comp is still open until midnight Monday.

I did enjoy that, despite it being sudoku... :D

Re: Prime Exotica

Posted: Tue 25 Jan, 2011 12:23 am
by debmohanty
detuned wrote:So that's code for David running rampage again presumably. I'll give this a shot when I get back from the shops.
How correct!
David had a very impressive performance, and he stands 2nd.
Thank you all for participating.

Re: Prime Exotica

Posted: Tue 25 Jan, 2011 1:04 am
by detuned
Wow, top stuff David. And not bad at all Steve either! Once again, thanks to all those involved with organisation. Maybe the week after next Deb I can finally make a start on my idea for a test too :)

Re: Prime Exotica

Posted: Tue 25 Jan, 2011 6:50 am
by drsteve
detuned wrote:Wow, top stuff David. And not bad at all Steve either! Once again, thanks to all those involved with organisation. Maybe the week after next Deb I can finally make a start on my idea for a test too :)
Thing is, this competition benefited in a couple of rounds if you did some preparation, a la world championships. Multitab is very quick if you've prepared a list of possible sums. I'd have hated to have tried that from scratch. Ditto Prime was similar, as was Kombinance.

I'm sure that my score benefited from doing that preparation.

Re: Prime Exotica

Posted: Tue 25 Jan, 2011 7:48 am
by rakesh_rai
drsteve wrote:Thing is, this competition benefited in a couple of rounds if you did some preparation, a la world championships. Multitab is very quick if you've prepared a list of possible sums. I'd have hated to have tried that from scratch. Ditto Prime was similar, as was Kombinance.

I'm sure that my score benefited from doing that preparation.
Absolutely right. So, in effect, there were (hidden) points for preparation too !! Kombinance solves much faster if you know that there are exactly nine four-number combinations to make 17. Prime number was not too dependent on a list (at least, the intention was not that), but it is possible that having a list would have helped. Multitab, of course, was a little difficult without some sort of preparation.

Re: Prime Exotica

Posted: Tue 25 Jan, 2011 11:36 am
by detuned
I had the 9 sets of 17's for kombinance, but didn't think to do it for multitab. Having said that I really enjoyed the logic involved in unravelling that puzzle.

I think another thing that got me was not being to add up for the numerology one. Must have wasted a good 10 minutes there...typical mathematician eh :roll: