UKPA Beginners Contests

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detuned
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UKPA Beginners Contests

Post by detuned » Sat 12 May, 2012 10:53 am

The UKPA are pleased to announce a series of beginners contests!

The aim of this series to introduce new solvers to the world of puzzle solving who might otherwise be put off or daunted by the longer and more difficult puzzle contests that the puzzling community already provides.

The format will be as follows:

There will be three puzzle types, and four of each these puzzle types to solve. The window of each contest will be open for a month. There will be no time limit on submissions during this window, however for those inclined to be competitive, results will be sorted by the time of the last submitted correct answer. At the end of the month results will be published, together with a list of all puzzles who submit correct answers to all 12 puzzles.

Each of the puzzles will be small, but not necessarily trivial to solve. New solvers are encouraged to be creative in finding techniques to solve the puzzles, and not to be put off if you can't solve everything in one go. There is plenty of time within the month to solve the puzzles!

The first contest will feature Nurikabe, Shikaku and Slitherlink.

UPDATE:

Contest page is here: http://www.ukpuzzles.org/contests.php?contestid=26
Instructions with example puzzles is here: http://www.ukpuzzles.org/file_download. ... ebfc15e6fc
Last edited by detuned on Thu 17 May, 2012 9:46 pm, edited 1 time in total.

detuned
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Re: UKPA Beginners Contests

Post by detuned » Sun 13 May, 2012 8:31 pm

bump!

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driv4r
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Re: UKPA Beginners Contests

Post by driv4r » Tue 15 May, 2012 12:35 am

Might give this a try!
"Stupid is as stupid does." -- Forrest Gump

detuned
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Re: UKPA Beginners Contests

Post by detuned » Thu 17 May, 2012 10:16 pm

I'd quite like to get a bandwagon rolling with this one - if everyone could spread this as far and wide as possible that would be great. For example, I think this would be very suitable for bright school kids in need of a challenge!

detuned
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Re: UKPA Beginners Contests

Post by detuned » Sat 19 May, 2012 10:44 am

Quick update: there was a small error with the answer key for shikaku no. 3, which has now been fixed!

river222
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Re: UKPA Beginners Contests

Post by river222 » Sat 19 May, 2012 6:02 pm

How do you know when you've got the correct solution for all the puzzles as I have completed all 12 puzzles but I'm not sure if the answer key is correct :?: :?: :mrgreen:

detuned
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Re: UKPA Beginners Contests

Post by detuned » Sat 19 May, 2012 6:29 pm

I think we are working on this one - the style of this contest is quite different from anything that the current software has had to handle!

river222
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Re: UKPA Beginners Contests

Post by river222 » Sat 19 May, 2012 8:19 pm

Do you know If I've got the correct answers?

afcwarren
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Re: UKPA Beginners Contests

Post by afcwarren » Thu 24 May, 2012 1:03 pm

Nice set of puzzles Tom. I enjoyed adding them to Croco for my lunch break!

Hopefully the uptake is high and if anyone reading this hasn't had a go yet, please do!

warriorider
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Re: UKPA Beginners Contests

Post by warriorider » Tue 05 Jun, 2012 9:12 pm

Just like to say that I've really enjoyed doing these puzzle.
:lol: :LOL: :LOL: :LOL:

Sindhuja Namburi
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Re: UKPA Beginners Contests

Post by Sindhuja Namburi » Sun 10 Jun, 2012 12:24 pm

In slitherlink puzzles 3.2 and 3.4 there is a mistake regarding 2in the last row in 3.2 and 0in the 2nd row of 3.4

detuned
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Re: UKPA Beginners Contests

Post by detuned » Sun 10 Jun, 2012 1:24 pm

I'd encourage you to check your answers - we are confident there are no mistakes. I think the hope is to have some solutions and perhaps some discussion about the puzzles after the contest is over.

Sindhuja Namburi
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Re: UKPA Beginners Contests

Post by Sindhuja Namburi » Sun 10 Jun, 2012 3:57 pm

These puzzles are nice but what kind of puzzles help to take challenge in World sudoku champion ship.

PuzzleScot
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Re: UKPA Beginners Contests

Post by PuzzleScot » Sun 10 Jun, 2012 9:19 pm

Sindhuja Namburi wrote:These puzzles are nice but what kind of puzzles help to take challenge in World sudoku champion ship.
You can find the type of puzzle you are looking for on our contests page (anything with 'Sudoku' in the title)
If you want more, check the Competitions forum for Sudoku contests. Most, if not all competitions featured there are of WSC standard. Once you are familiar with the type of variations you may find, you need to work on your speed! All the contenders at the WSC can solve all the sudoku (& variants) in the contest, but it is the fastest person who wins. Hope that helps.

Sindhuja Namburi
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Re: UKPA Beginners Contests

Post by Sindhuja Namburi » Mon 11 Jun, 2012 10:48 am

Can we solve the hardest sudoku with very few numbers with out using pencil and eraser , i mean with direct pen in less time

puzzlemad
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Re: UKPA Beginners Contests

Post by puzzlemad » Mon 11 Jun, 2012 2:39 pm

Sindhuja Namburi wrote:Can we solve the hardest sudoku with very few numbers with out using pencil and eraser , i mean with direct pen in less time
I think that you are asking whether it is okay to use pen straight away as you solve a puzzle. With both the WSC and the WPC it is acceptable for answers to be submitted in pencil, therefore, there should be no difference to speed whether using pen or pencil.

Sindhuja Namburi
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Re: UKPA Beginners Contests

Post by Sindhuja Namburi » Mon 11 Jun, 2012 3:47 pm

Nope I'm asking that for toughest sudoku i use pencil because i use trial and error method for the blocks with various chances
since if any where goes wrong we can use eraser but with pen once written can't be erased

sknight
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Re: UKPA Beginners Contests

Post by sknight » Mon 11 Jun, 2012 8:40 pm

Most of the hand-designed sudoku puzzles you see in competitions can be done without real trial and error, i would say.
Even the very hard ones.
That isn't to say that it isn't worth doing a little bit of candidate notation, particularly for marking pairs (like when
you know two particular cells are a 3 and a 5 but you're going to figure out which is which later on). Even the really
good solvers will jot down this sort of thing, and a lot of puzzles are designed so that this sort of information fills
in at the end.

I rarely "bifurcate" the puzzle ("OK, suppose this one is a 6..."), and even then only in situations where
1) I feel like I've hit a wall,
2) there are only two possibilities to choose from, and
3) choosing one or the other possible value will have a big ripple effect.
But it feels like something of a last resort to me. Note that #3 there means that I never bifurcate early in a puzzle,
but only after I've gotten a very good feel for most of what's going on in the puzzle.

Mind you, sudoku isn't a particular forte of mine, and the guys who are really good solve them all at least twice as fast as I do.
If you want to see what good solving looks like, you might watch the youtube videos of Thomas "motris" Snyder solving Sudoku.

Sindhuja Namburi
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Re: UKPA Beginners Contests

Post by Sindhuja Namburi » Tue 19 Jun, 2012 4:28 am

Thank u so much for your worthy answer

anurag
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Re: UKPA Beginners Contests

Post by anurag » Sun 01 Jul, 2012 2:44 pm

Looks like a good set of classics.I wonder if these samples were tested.I did not try them all yet, but atleast one of those does not solve uniquely in the last moments.

detuned
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Re: UKPA Beginners Contests

Post by detuned » Sun 01 Jul, 2012 8:29 pm

They have been tested and they do all solve uniquely :)

NikolaZ
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Re: UKPA Beginners Contests

Post by NikolaZ » Sun 01 Jul, 2012 10:43 pm

I think Anurag has right. Puzzle 1.3 goes to double solution in top right corner. Number 8 can be reached in two ways, but the solution key is the same. I noticed this during the solving and lost some time here.

Nikola

sknight
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Re: UKPA Beginners Contests

Post by sknight » Mon 02 Jul, 2012 12:26 am

Oops. Nevermind. I had posted that I didn't see the second solution.
Now I do.

The eight can either go
PRIME_BBCODE_SPOILER_SHOW PRIME_BBCODE_SPOILER:
88888_
__8_8_
3___8_

pr

8888__
__888_
3___8_

anurag
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Re: UKPA Beginners Contests

Post by anurag » Mon 02 Jul, 2012 6:57 am

I like 3.2 .Very pleasant

detuned
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Re: UKPA Beginners Contests

Post by detuned » Mon 02 Jul, 2012 10:10 am

sknight wrote:Oops. Nevermind. I had posted that I didn't see the second solution.
Now I do.
You and me both - sorry! :oops:

The second booklet should be released later today, this time without such a formal competition structure...

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