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Announcing "LMI Beginners' Puzzle Contests"191 posts • Page 5 of 8 • 1 2 3 4 5 6 7 8
@ 2014-03-10 9:21 PM (#14584 - in reply to #14583) (#14584) Top

debmohanty




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debmohanty posted @ 2014-03-10 9:21 PM

mathcrazy - 2014-03-10 8:49 PM

In Spiral Galaxies, should each region definitely contain a circle? Or can there be regions whose point of symmetry is not shown?
In standard Spiral Galaxies all circles / central points will be given. That means, each region must contain exactly one of the given circles.

As noted in the IB, and as it had happened in the previous beginners' tests, some rules are deviated in the exploratory category. For those puzzles, you need to look at the given example to find out the deviation in rules, if any.
@ 2014-03-10 10:41 PM (#14586 - in reply to #14584) (#14586) Top

mathcrazy



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mathcrazy posted @ 2014-03-10 10:41 PM

debmohanty - 2014-03-10 9:21 PM

mathcrazy - 2014-03-10 8:49 PM

In Spiral Galaxies, should each region definitely contain a circle? Or can there be regions whose point of symmetry is not shown?
In standard Spiral Galaxies all circles / central points will be given. That means, each region must contain exactly one of the given circles.

As noted in the IB, and as it had happened in the previous beginners' tests, some rules are deviated in the exploratory category. For those puzzles, you need to look at the given example to find out the deviation in rules, if any.


Thanks, that cleared my doubt. Where can I find solving techniques for Spiral Galaxies? There seems to be more than one way of proceeding with each puzzle, and I'm able to realize very late that I proceeded wrongly.
@ 2014-03-11 5:01 AM (#14588 - in reply to #14586) (#14588) Top

chaotic_iak




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chaotic_iak posted @ 2014-03-11 5:01 AM

Basic deductions:
- Two circles that are in adjacent cells have walls between them. Note that a circle is included even if it's only partially inside a cell (at the edge or corner).
- When a circle has a wall adjacent to it, the symmetrically opposite border must also be wall.

Intermediate deductions:
- Keep track of what cells a circle contains. The above two rules apply even for non-circle cells, as long as they belong to different regions.
- Sometimes, a cell is just so far from other circles; try to figure out which circle holds this cell.
- Sometimes intuition helps scoring a quick time.
@ 2014-03-14 5:08 PM (#14604 - in reply to #14588) (#14604) Top

Administrator



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Administrator posted @ 2014-03-14 5:08 PM

Beginners' contest is delayed - we will post a note when it starts.
@ 2014-03-14 7:33 PM (#14605 - in reply to #10788) (#14605) Top

mathcrazy



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Country : India

mathcrazy posted @ 2014-03-14 7:33 PM

Any pointers on how to proceed with this Spiral Galaxies puzzle after this?

http://oi59.tinypic.com/27zlzll.jpg


@ 2014-03-14 7:55 PM (#14606 - in reply to #14605) (#14606) Top

greenhorn



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greenhorn posted @ 2014-03-14 7:55 PM

mathcrazy - 2014-03-14 7:33 PM

Any pointers on how to proceed with this Spiral Galaxies puzzle after this?

http://oi59.tinypic.com/27zlzll.jpg




Cells C12-R8,9,10 are in the same region, for example.
@ 2014-03-14 8:29 PM (#14607 - in reply to #14605) (#14607) Top

swaroop2011




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swaroop2011 posted @ 2014-03-14 8:29 PM

also c14 r1 and r2 have only one choice .. basically find some cells which can go in unique way. :)
mathcrazy - 2014-03-14 7:33 PM

Any pointers on how to proceed with this Spiral Galaxies puzzle after this?

http://oi59.tinypic.com/27zlzll.jpg



@ 2014-03-14 8:37 PM (#14608 - in reply to #10788) (#14608) Top

mathcrazy



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mathcrazy posted @ 2014-03-14 8:37 PM

Okay got it, thanks to both of you for those tips :)

Edited by mathcrazy 2014-03-14 8:41 PM
@ 2014-03-14 8:46 PM (#14609 - in reply to #14607) (#14609) Top

mathcrazy



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mathcrazy posted @ 2014-03-14 8:46 PM

swaroop2011 - 2014-03-14 8:29 PM

also c14 r1 and r2 have only one choice .. basically find some cells which can go in unique way. :)
mathcrazy - 2014-03-14 7:33 PM

Any pointers on how to proceed with this Spiral Galaxies puzzle after this?

http://oi59.tinypic.com/27zlzll.jpg





How do cells C14R1 and C14R2 have only one choice?

@ 2014-03-14 9:36 PM (#14610 - in reply to #10788) (#14610) Top

swaroop2011




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swaroop2011 posted @ 2014-03-14 9:36 PM

ok think in this way to which galaxy does c14r2 cell can join, you will find only one way.
@ 2014-03-15 2:22 AM (#14613 - in reply to #14579) (#14613) Top

brecher92



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brecher92 posted @ 2014-03-15 2:22 AM

Personally, in a forty-minute contest, I think that good notation is going to make a huge difference. Every time I try a puzzle like this, I go back and forth between drawing the border and connecting the cells directly, wasting a lot of time and creating a real mess of lines across the puzzle. This may be one puzzle type where I need to break into my child's supply of color pencils...
@ 2014-03-15 3:11 AM (#14614 - in reply to #10788) (#14614) Top

achan1058



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achan1058 posted @ 2014-03-15 3:11 AM

When is this contest actually starting, since I am not seeing anything other than the instructions booklet.
@ 2014-03-15 3:21 AM (#14615 - in reply to #14614) (#14615) Top

debmohanty




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Country : India

debmohanty posted @ 2014-03-15 3:21 AM

Administrator - 2014-03-14 5:08 PM

Beginners' contest is delayed - we will post a note when it starts.

achan1058 - 2014-03-15 3:11 AM

When is this contest actually starting, since I am not seeing anything other than the instructions booklet.

Quite unusually, we have run into some issues here. I can't put an exact time right now, but it will take around 12 hours, as I post this.

@ 2014-03-15 2:19 PM (#14617 - in reply to #14615) (#14617) Top

Administrator



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Administrator posted @ 2014-03-15 2:19 PM

March Beginners' Puzzle Contest has started


The dates are revised to 15th - 20th March (including both dates)

Submission Links : Spiral GalaxiesTetrominoes

@ 2014-03-15 7:00 PM (#14619 - in reply to #14579) (#14619) Top

greenhorn



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greenhorn posted @ 2014-03-15 7:00 PM

Great puzzles, Serkan! I really enjoyed solving them. But from my view, discovering the twisted rules is too difficult, I am not sure, whether beginners will get through it. I solved Galaxies about 20 minutes and 8-10 minutes was just about guessing the proper rules.
@ 2014-03-15 9:50 PM (#14621 - in reply to #10788) (#14621) Top

chaotic_iak




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chaotic_iak posted @ 2014-03-15 9:50 PM

Great puzzles indeed. The puzzles feel reasonable (also I now know I'm not particularly good in Galaxies). I feel the exploratory rules for Galaxies is a bit stretching it though. Black and white circles are good ideas, but gray circles just sound like throwing the symmetry part of Galaxies away. I have no particular comments, although I feel Tetromino should also have a puzzle or two without givens.

Also, for some reason I blazed through the first six Tetromino puzzles in 11 minutes (plus two stupid mistakes on the first puzzle), and the last two in 17 minutes.
@ 2014-03-15 9:57 PM (#14622 - in reply to #14579) (#14622) Top

davep



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davep posted @ 2014-03-15 9:57 PM

Excellent job, Serkan. I particularly enjoyed SG # 6, which I thought was quite clever. Thanks for the contest!
@ 2014-03-15 11:17 PM (#14624 - in reply to #14579) (#14624) Top

Realshaggy



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Realshaggy posted @ 2014-03-15 11:17 PM

Great puzzles!

However, I think I have an indication if my answer is right or wrong before I really submit it. Is this indicated? (The red border of the cell vanishes if my answer has the correct length of the entry string before I hit the button.)
@ 2014-03-15 11:38 PM (#14625 - in reply to #14624) (#14625) Top

debmohanty




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Country : India

debmohanty posted @ 2014-03-15 11:38 PM

Realshaggy - 2014-03-15 11:17 PM

However, I think I have an indication if my answer is right or wrong before I really submit it. Is this indicated? (The red border of the cell vanishes if my answer has the correct length of the entry string before I hit the button.)

The red border vanishes when the sum of digits that you enter is equal to the size the grid (excluding black cells in Tetrominoes). It does not check for correctness of the answer.

For example, in Spiral Galaxy 1 - which is a 6X6 puzzle, if you enter 123 or 321 or 1122 or any set of digits summing to 6 the red border will vanish. We use this to check and alert if the answer is not formatted properly. Additionally, there is no penalty on answers which are not formatted correctly.

Hope that clarifies.
@ 2014-03-16 12:57 AM (#14626 - in reply to #10788) (#14626) Top

Realshaggy



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Realshaggy posted @ 2014-03-16 12:57 AM

Oh sorry. I didnt recognize you can use the sum of the digits as a check.
@ 2014-03-16 1:46 AM (#14627 - in reply to #14579) (#14627) Top

WA1729




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WA1729 posted @ 2014-03-16 1:46 AM

I recently reached the Seasoner level, but the test still says, "You have chosen to play as Beginner." Is there a way to change my level to Seasoner?
@ 2014-03-16 3:54 AM (#14629 - in reply to #14579) (#14629) Top

auroux



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auroux posted @ 2014-03-16 3:54 AM

I agree with most other posters -- really great puzzles, but on Galaxies figuring out the white/grey/black rule and checking on the given example took forever. (I should probably just have tried to solve #7 with the rule I guessed instead of wasting time trying it out on the example, but I really didn't have faith that I had guessed right).
@ 2014-03-16 6:08 AM (#14631 - in reply to #10788) (#14631) Top

achan1058



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achan1058 posted @ 2014-03-16 6:08 AM

I guessed wrong on #7 in such a way that produced the right answer, and only realized that when I was trying to do #8......
@ 2014-03-16 7:03 AM (#14632 - in reply to #10788) (#14632) Top

swaroop2011




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swaroop2011 posted @ 2014-03-16 7:03 AM

Thanks serkan, really beautiful puzzles.
Especially SG 5 and 6, Exploratory of Tetrominoes.
But unfortunately a bad test for me in Spiral Galaxies, I did continuously mistakes in all of them and at the end was confused to figure out rules for exploratory part and time got over. :(
After struggling little and fixing the rules it just took a minute each to solve each puzzle. :)
@ 2014-03-18 12:11 AM (#14635 - in reply to #10788) (#14635) Top

macherlakumar




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macherlakumar posted @ 2014-03-18 12:11 AM

Thanks Serkan for excellent puzzles.
I enjoyed both tests, I felt that Tetrominoes is easier than Spiral Galaxies.
I figured the rules for Spiral Galaxies exploratory part in just 1 min but due to stress I convinced myself that I got the rules wrong and slept :D

Regards,
Ravi
Announcing "LMI Beginners' Puzzle Contests"191 posts • Page 5 of 8 • 1 2 3 4 5 6 7 8
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