Search found 343 matches

by kiwijam
Sun 02 Dec, 2012 11:31 pm
Forum: Puzzle Competitions
Topic: 5th Serbian Open Optimizing Puzzle Championship
Replies: 12
Views: 13687

Re: 5th Serbian Open Optimizing Puzzle Championship

Q3. Doppelblock This one I had less idea about. I just kept building grids and hope that my best one is not too awful! But I did learn some interesting facts about Doppelblock. In all the 8 rows, a maximum of half of the digits can be between black squares. That's 24 of the 48 digits. And you get 24...
by kiwijam
Sun 02 Dec, 2012 11:03 pm
Forum: Puzzle Competitions
Topic: 5th Serbian Open Optimizing Puzzle Championship
Replies: 12
Views: 13687

Re: 5th Serbian Open Optimizing Puzzle Championship

Q2. Pentomino XTV When optimizing the sum of six numbers, the priority is to optimize the first digits of those six numbers. So however you set up the X,T,V, you'll have 6 important cells and in each of the three grids you'll want the 3x2s and 3x3s to be in those six cells. This would give a maximum...
by kiwijam
Sun 02 Dec, 2012 10:21 pm
Forum: Puzzle Competitions
Topic: 5th Serbian Open Optimizing Puzzle Championship
Replies: 12
Views: 13687

Re: 5th Serbian Open Optimizing Puzzle Championship

OK, I'll assume Round 1 has finished now... Here's some basic thoughts. Q1. Constellations. For this I started with the six unplanned routes. I want them to be short, so I want AGHI to be near each other, and CDE, and BF. And it turns out (coincidentally) that all the planned (long routes) go betwee...
by kiwijam
Sun 02 Dec, 2012 9:22 pm
Forum: Daily Puzzles
Topic: croco-puzzle
Replies: 696
Views: 730105

Re: croco-puzzle

I imagine that I have totally misunderstood the rules of 'Laser' as today's puzzle seems broken, in that one of the outside starting clues appears to be violated given the respective starting internal clues. :shock: I wont say any more here today, but would welcome someone explaining what I am miss...
by kiwijam
Sun 02 Dec, 2012 11:47 am
Forum: Puzzle Competitions
Topic: 5th Serbian Open Optimizing Puzzle Championship
Replies: 12
Views: 13687

Re: 5th Serbian Open Optimizing Puzzle Championship

Hmm, seems each round is only 6.5 days, not 7, so my earlier comment was incorrect (well, for UK it was), submissions are due Sunday night 9pm.
by kiwijam
Fri 30 Nov, 2012 9:47 pm
Forum: Puzzle Competitions
Topic: 5th Serbian Open Optimizing Puzzle Championship
Replies: 12
Views: 13687

Re: 5th Serbian Open Optimizing Puzzle Championship

I've been having a go at these this week. Be good to compare notes after each section is over as to how you know "you've found the best one possible", from the initial 'assumption' or starting point onwards - and if your strategy changed as a result of the initial investigations. Without, hopefully...
by kiwijam
Fri 30 Nov, 2012 2:02 am
Forum: Puzzle Competitions
Topic: 5th Serbian Open Optimizing Puzzle Championship
Replies: 12
Views: 13687

Re: 5th Serbian Open Optimizing Puzzle Championship

There are three puzzles here, which are rather nice optimizers. If you haven't tried optimizing before, I suggest you at least look at the instructions. It's a very different style of puzzling I think, instead of being guided to a solution by the creator you decide yourself when you've reached your ...
by kiwijam
Wed 28 Nov, 2012 2:50 am
Forum: Puzzle Competitions
Topic: LMI Contest - Forsmarts Xth Anniversary
Replies: 0
Views: 3594

LMI Contest - Forsmarts Xth Anniversary

Logic Masters India announces Forsmarts Xth Anniversary Contest

Author : Vladimir Portugalov

Dates : 1st - 3rd December

IB and Submission Link : here

Note : Although classified as annual contest, this will be included in monthly ratings.
by kiwijam
Tue 27 Nov, 2012 4:05 am
Forum: Puzzle Competitions
Topic: Japanische summen contest
Replies: 6
Views: 8264

Re: Japanische summen contest

When I first read James' note about there being discussion of the fact that 0 isn't prime, I was wondering if math education in Germany had taken a turn for the worse ("Of course zero isn't prime, who would think it was?") until I read through the puzzle directions and understood ("ohhh... ZERO isn...
by kiwijam
Mon 26 Nov, 2012 2:13 am
Forum: Puzzle Competitions
Topic: Japanische summen contest
Replies: 6
Views: 8264

Re: Japanische summen contest

If you like Japanese Sums I can definitely recommend this set, all are well-constructed and rewarding.
I see Rodders and Anthea had a go too.
I wasn't so worried about the time, did plenty of housework/eating/childcare in between. :)
by kiwijam
Sat 24 Nov, 2012 2:32 am
Forum: Puzzle Competitions
Topic: Japanische summen contest
Replies: 6
Views: 8264

Re: Japanische summen contest

The contest is open for 48 hours (until the end of Sunday), and once you start you have 24 hours to submit without penalty. The author says the puzzles won't (shouldn't!) take that long, but you have the choice if you want to be speedy or leisurely. I would say that a knapp daneban 1 must change to ...
by kiwijam
Tue 20 Nov, 2012 2:30 am
Forum: Puzzle Competitions
Topic: LMI Competition - Word Show (17-19 Nov 2012)
Replies: 7
Views: 9522

Re: LMI Competition - Word Show (17-19 Nov 2012)

Well don't say i didn't try to remind you! I think my previous LMI best was a 10th place, so I was very pleased to end up in 4th place on this one, ahead of some big names. Unfortunately I expected to be awful (I don't usually like word puzzles) and initially wasn't going to try, so I'd clicked the ...
by kiwijam
Sun 18 Nov, 2012 10:46 am
Forum: Puzzle Competitions
Topic: LMI Competition - Word Show (17-19 Nov 2012)
Replies: 7
Views: 9522

LMI Competition - Word Show (17-19 Nov 2012)

Logic Masters India announced their November Puzzle Test — Word Show

Author : Nikola Zivanovic

Dates : 17nd — 19th November

Length : 90 minutes

IB and Submission Link : here

http://logicmastersindia.com/M201211P/


This competition ends at midnight on Monday, UK time.
by kiwijam
Sat 10 Nov, 2012 9:55 am
Forum: Puzzle Competitions
Topic: 24hr Puzzle Championship 2012
Replies: 24
Views: 26796

Re: 24hr Puzzle Championship 2012

Thanks Tawan. :)
by kiwijam
Sat 10 Nov, 2012 7:45 am
Forum: Puzzle Competitions
Topic: 24hr Puzzle Championship 2012
Replies: 24
Views: 26796

Re: 24hr Puzzle Championship 2012

This tournament is starting in 1hr:15mins.
Does anybody know if it will possible to see any puzzles once it starts? Or will any results be published as they go?
by kiwijam
Tue 06 Nov, 2012 2:47 am
Forum: Puzzle Competitions
Topic: Croco-Liga team competition, starting in September 2012
Replies: 82
Views: 102318

Re: Croco-Liga team competition, starting in September 2012

I was 39th out of 47 and even beat Northern UK solver 8-) Lauri, please stop telling us when you beat another UK member at a puzzle. It is rude. It only occurs when the other puzzler has had an unusually poor time, and they don't wish to be reminded of it. Celebrate their achievements instead. Sudo...
by kiwijam
Mon 05 Nov, 2012 2:57 am
Forum: Puzzle Competitions
Topic: 24hr Puzzle Championship 2012
Replies: 24
Views: 26796

Re: 24hr Puzzle Championship 2012

I was creating this compilation of all the round summaries. Mainly copy-pasted, hence the irregular formatting. So if you want a quick look at the contents without going through the whole IB: (it's long so I've put it in a spoiler to save space) 1. SY 1. Double Minesweeper - 10 + 20 + 20 + 30 points...
by kiwijam
Mon 05 Nov, 2012 2:49 am
Forum: Puzzle Links
Topic: croco-puzzle
Replies: 696
Views: 730105

Re: croco-puzzle

Congratulations to Tom for reaching 1st kyu.
You've had a highly successful last fortnight on the ratings, long may it continue!
by kiwijam
Mon 29 Oct, 2012 8:37 pm
Forum: Puzzle Competitions
Topic: HALAS league tournement
Replies: 12
Views: 12853

Re: HALAS league tournement

6 hours in one go. You'll be ready for the WPC in no time!

I found the puzzle rounds still had a "sudoku" flavour, I guess that is a strong area for Halas.
by kiwijam
Sun 28 Oct, 2012 9:47 pm
Forum: Puzzle Links
Topic: croco-puzzle
Replies: 696
Views: 730105

Re: croco-puzzle

I believe today is 25 hours long in Germany, being the last Sunday of October, and today's Hexagon Fences puzzle is particularly hard, so I'm really hoping someone will take between 24 and 25 hours to finish it, that would be a nice statistical anomaly... @Berni: Perhaps you could offer a really har...
by kiwijam
Sun 28 Oct, 2012 9:38 pm
Forum: Puzzle Competitions
Topic: LMI: Fillomino Fillia 2 (27-29 Oct 2012)
Replies: 6
Views: 8495

Re: LMI: Fillomino Fillia 2 (27-29 Oct 2012)

A lot of positive reviews of these puzzles, which I agree with. I think the contest is open for another day. And UK has two top-ten finishes (top-four if you exclude Japan!). In a holiday house, I solved my puzzles at the other end of the house from the computer, and because of the instant-marking s...
by kiwijam
Thu 25 Oct, 2012 1:33 am
Forum: Puzzle Competitions
Topic: Somewhere Over the Rainbow
Replies: 2
Views: 4891

Re: Somewhere Over the Rainbow

Thanks Tawan,

Some good puzzles mixed in with some 'research' activities, it's a fun diversion if people want to have a look.
by kiwijam
Thu 18 Oct, 2012 10:54 pm
Forum: Puzzle Links
Topic: nikoli.com
Replies: 23
Views: 40321

Re: nikoli.com

sknight wrote:There's a very nice new Hashi puzzle up in the Botsu Bako section courtesy of nyoroppyi.
Recommended.
(PS Botsu Bako = members only)
by kiwijam
Tue 16 Oct, 2012 9:30 pm
Forum: General Puzzle Discussions
Topic: Puzzles for the blind?
Replies: 3
Views: 7600

Re: Puzzles for the blind?

No idea about how to adapt WPC-puzzles for the blind, but for blind puzzlers you have other options like Rubiks cubes: http://www.geekosystem.com/6-clever-rubiks-cubes-for-the-blind/#0 and I like this http://www.yankodesign.com/2006/02/17/rubik-cube-for-blind-by-zhiliang-chen/ . Also pentomino sets ...
by kiwijam
Sat 13 Oct, 2012 8:52 am
Forum: Puzzle Competitions
Topic: Team UK at the WPC
Replies: 26
Views: 28710

Re: Team UK at the WPC

Thanks for sharing Emma, I like it! When solving, if you colour a boundary cell then you can immediately colour the opposite boundary cell too. I'm able able to use Pick's theorem to prove the converse is true too: "If a Ying Yang puzzle has two borders of equal length then the black/white areas mus...