Prime Exotica

Information and discussion on Puzzle Competitions
Post Reply
rakesh_rai
Posts: 9
Joined: Sun 31 Oct, 2010 7:49 am

Prime Exotica

Post by rakesh_rai » Fri 14 Jan, 2011 7:29 am

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

ronaldx
Posts: 407
Joined: Mon 21 Jun, 2010 2:41 pm

Re: Prime Exotica

Post by ronaldx » Fri 14 Jan, 2011 3:19 pm

sounds fun, thanks!

rakesh_rai
Posts: 9
Joined: Sun 31 Oct, 2010 7:49 am

Re: Prime Exotica

Post by rakesh_rai » Sat 22 Jan, 2011 12:36 pm

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.

detuned
Posts: 1838
Joined: Mon 21 Jun, 2010 2:25 pm
Location: London, UK
Contact:

Re: Prime Exotica

Post by detuned » Sat 22 Jan, 2011 3:41 pm

So that's code for David running rampage again presumably. I'll give this a shot when I get back from the shops.

rakesh_rai
Posts: 9
Joined: Sun 31 Oct, 2010 7:49 am

Re: Prime Exotica

Post by rakesh_rai » Sun 23 Jan, 2011 6:53 am

There was an outage at LMI, but the site is now back up and running. The test timing will be extended by 24 hours.

nickdeller
Posts: 600
Joined: Tue 29 Jun, 2010 11:41 am

Re: Prime Exotica

Post by nickdeller » Sun 23 Jan, 2011 9:30 pm

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! :-)

detuned
Posts: 1838
Joined: Mon 21 Jun, 2010 2:25 pm
Location: London, UK
Contact:

Re: Prime Exotica

Post by detuned » Sun 23 Jan, 2011 10:53 pm

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 :(

drsteve
Posts: 726
Joined: Sun 27 Jun, 2010 7:23 am

Re: Prime Exotica

Post by drsteve » Mon 24 Jan, 2011 7:48 pm

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

debmohanty
Posts: 129
Joined: Fri 09 Jul, 2010 12:36 pm

Re: Prime Exotica

Post by debmohanty » Tue 25 Jan, 2011 12:23 am

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.

detuned
Posts: 1838
Joined: Mon 21 Jun, 2010 2:25 pm
Location: London, UK
Contact:

Re: Prime Exotica

Post by detuned » Tue 25 Jan, 2011 1:04 am

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 :)

drsteve
Posts: 726
Joined: Sun 27 Jun, 2010 7:23 am

Re: Prime Exotica

Post by drsteve » Tue 25 Jan, 2011 6:50 am

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.

rakesh_rai
Posts: 9
Joined: Sun 31 Oct, 2010 7:49 am

Re: Prime Exotica

Post by rakesh_rai » Tue 25 Jan, 2011 7:48 am

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.

detuned
Posts: 1838
Joined: Mon 21 Jun, 2010 2:25 pm
Location: London, UK
Contact:

Re: Prime Exotica

Post by detuned » Tue 25 Jan, 2011 11:36 am

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:

Post Reply