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forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018
   LMI Tests -> Annual Competitions50 posts • Page 2 of 2 • 1 2
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-19 9:28 PM (#24292 - in reply to #24291) (#24292) Top


2000100050020
Location: India

Contest extended by 24 hours


Based on requests, the test end time is now extended by 24 hours, and will be open full day on 20th February. Check submission page for exact timing.

Gotroch
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-20 1:52 AM (#24293 - in reply to #24242) (#24293) Top




Posts: 83
20202020
Location: Czech Republic
 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Incorrect Products
 What was your opinion about the answer key extraction? Mostly perfect answer keys
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


kiwijam
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-20 4:22 AM (#24294 - in reply to #24242) (#24294) Top




Posts: 181
10020202020
Location: New Zealand
"Contest extended by 24 hours" post is not visible when I'm not logged in.

Edited by kiwijam 2018-02-20 4:22 AM
swaroop2011
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-20 8:01 AM (#24295 - in reply to #24242) (#24295) Top



PR 2020 (Shading and Loops) Author

Posts: 668
500100202020
Location: India
 What was your opinion of the distribution of easy/hard puzzles? Too many medium difficult puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Unknown Calendar
 What was your opinion about the answer key extraction? Perfect answer keys
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


Well interesting set of puzzles. Wasted lot of time in switching between puzzles and couldn't complete lots of them. Have to solve remaining.
Thanks for the test.
An LMI player
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-20 10:32 AM (#24296 - in reply to #24242) (#24296) Top


 What was your opinion of the distribution of easy/hard puzzles? Too many hard puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Triangular Minesweeper
 What was your opinion about the answer key extraction? Perfect answer keys
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Many puzzles were worth too much or too little
 What was your opinion of the booklet formatting and printing? Just right


An LMI player
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-20 12:16 PM (#24297 - in reply to #24242) (#24297) Top


 What was your opinion of the distribution of easy/hard puzzles? Too many medium difficult puzzles
 What did you think about the puzzle quality of the test? Fairly Nice
 Which set of puzzles did you like the most? Unknown Diginet
 What was your opinion about the answer key extraction? Mostly perfect answer keys
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


An LMI player
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-21 3:37 AM (#24301 - in reply to #24242) (#24301) Top


 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Unknown Calendar
 Of the puzzles you solved/attempted, how well did the point values reflect the difficulty? Most puzzles were worth the right amount
 What was your opinion of the booklet formatting and printing? Just right


chaotic_iak
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-21 6:41 AM (#24302 - in reply to #24242) (#24302) Top



Typed Logic Author

Posts: 241
1001002020
Location: Indonesia
My first ever podium finish that I can remember, and this is done when I'm half-asleep. Clearly I should do contests while half-asleep. :P
prasanna16391
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-21 3:26 PM (#24304 - in reply to #24302) (#24304) Top


2021 World Sudoku+Puzzle Convention Organizer

Posts: 1763
1000500100100202020
Location: India
chaotic_iak - 2018-02-21 6:41 AM

My first ever podium finish that I can remember, and this is done when I'm half-asleep. Clearly I should do contests while half-asleep. :P


I've come to a similar conclusion recently. I make more mistakes when I'm solving fresh -_- There's probably a weird theory explaining it somewhere even if I can't think of one now.
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-21 3:35 PM (#24305 - in reply to #24242) (#24305) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
Big thanks to all the competitors and congratulations to Endo, Ivan and Kota, who made it to a top-3.
I would also like to thank my co-authors:
Olga Shut, who created all Unknown puzzles and Instructionless Gamma
and Andrey Bogdanov, author of all Triangular puzzles.

Edited by forsmarts 2018-02-21 3:37 PM
skrzypl1
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-21 3:43 PM (#24306 - in reply to #24242) (#24306) Top




Posts: 1

Location: Poland
I think that Unknown digits have second possible solution: 1234. Connecting: 1-6, 2-7, 3-5, 3-9, 4-5. Am I wrong?

Also, can we know rules for instructionless puzzles? For example when I solve alpha I get multiple solutions (but proper answer keys nevertheless).

EDIT: I just figured out proper alpha rules that don't give multiple solutions.

Edited by skrzypl1 2018-02-21 4:04 PM
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-21 4:13 PM (#24307 - in reply to #24306) (#24307) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
skrzypl1 - 2018-02-21 3:43 PM
I think that Unknown digits have second possible solution: 1234. Connecting: 1-6, 2-7, 3-5, 3-9, 4-5. Am I wrong?

Seems like you're right :( Confirmed with Olga.
I'll ask an administrator to give full points for this one as well.
Ziti
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-22 10:22 AM (#24311 - in reply to #24242) (#24311) Top




Posts: 42
2020
Location: United States
Thank you Vladimir and all your helpers for an entertaining and challenging set of puzzles. I never know how such creative people come up with new puzzle types but I am grateful that you do!

Will there be a solution pdf published? Man oh man I do not see what I did wrong on Gamma -- at least the first one seems like it follows a perfectly unique set of rules.
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-22 4:22 PM (#24314 - in reply to #24311) (#24314) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
Ziti - 2018-02-22 10:22 AM
Will there be a solution pdf published?

I'm sure the solutions will be posted a bit later on a contest page. Meanwhile you can get it from here: https://drive.google.com/open?id=1-WA0Yld3B-L_d-CzrC-nBNj13kdc0eiw
tamz29
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-22 11:49 PM (#24318 - in reply to #24242) (#24318) Top




Posts: 225
10010020
Location: Thailand
Great puzzles and a lot of new ideas!
Is there a way to see the puzzles from the aforementioned Moscow Cup ?
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-23 1:37 AM (#24321 - in reply to #24318) (#24321) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
tamz29 - 2018-02-22 11:49 PM
Is there a way to see the puzzles from the aforementioned Moscow Cup ?

They'll be posted shortly on http://diogenclub.com/, but it will be in Russian.
Para
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-23 5:58 AM (#24323 - in reply to #24242) (#24323) Top




Posts: 315
100100100
Location: The Netherlands
Isn’t this a valid solution for Incorrect Products too?

42513
31452
23145
54231
15324
chaotic_iak
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-23 6:55 AM (#24324 - in reply to #24242) (#24324) Top



Typed Logic Author

Posts: 241
1001002020
Location: Indonesia
Para: The 6 is replaced by a 18; that's not a change of one digit.

And to the puzzle: It's a shame to know that Unknown Diginet has multiple solutions. That must be why I was wondering how you can possibly approach this logically.

Edited by chaotic_iak 2018-02-23 6:56 AM
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-23 9:03 AM (#24326 - in reply to #24324) (#24326) Top


2000100050020
Location: India
Solution Booklet available now.
Para
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-23 10:29 AM (#24327 - in reply to #24324) (#24327) Top




Posts: 315
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Location: The Netherlands
chaotic_iak - 2018-02-23 6:55 AM

Para: The 6 is replaced by a 18; that's not a change of one digit.

And to the puzzle: It's a shame to know that Unknown Diginet has multiple solutions. That must be why I was wondering how you can possibly approach this logically.


Ah, okay. I didn’t really read the rules carefully enough. I just went with, they all work the same as the first, which was one incorrect clue.
rob
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-24 8:36 PM (#24332 - in reply to #24242) (#24332) Top


Classics & Regions (PR 2016/17) Author

Posts: 170
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Location: Germany
For beta, also the line has to turn at each dot? Otherwise the example seems not unique.

The alpha rules are nice, unfortunately some Slalom-like rules were too promising for me (no loops, then no crosses: seemed to work fine for the example and the first puzzle, but the second one is contradictory quite late).
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-24 11:56 PM (#24334 - in reply to #24332) (#24334) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
rob - 2018-02-24 8:36 PM
For beta, also the line has to turn at each dot? Otherwise the example seems not unique.

You're right, it should also make a turn at each dot!
rob - 2018-02-24 8:36 PM
The alpha rules are nice, unfortunately some Slalom-like rules were too promising for me (no loops, then no crosses: seemed to work fine for the example and the first puzzle, but the second one is contradictory quite late).

Example is not unique for slalom-like solution, there's one cell that may contain either slash.
Ziti
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-25 3:46 AM (#24335 - in reply to #24242) (#24335) Top




Posts: 42
2020
Location: United States
Thank you for the solutions, Vladimir. I solved Gamma as "Path must alternate going through circle-wall-circle-wall..." but did not realize the additional constraint. It solved the example uniquely but obviously not uniquely for the puzzles themselves. Which might explain why I had to guess and was happy (at the time!) to reach a conclusion! :)
Eugene Porter
Subject: RE: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-27 1:25 PM (#24362 - in reply to #24242) (#24362) Top




Posts: 11

Location: United States
I thought it was a great contest. I did have one question about the incorrect products puzzle. I got an answer of 45213 and 23541 doing this the 36 was the incorrect product. Maybe I am missing something but after checking many times this seems to be a possible alternative solution.
forsmarts
Subject: RE: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-27 8:22 PM (#24364 - in reply to #24362) (#24364) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
Eugene Porter - 2018-02-27 1:25 PM
I did have one question about the incorrect products puzzle. I got an answer of 45213 and 23541 doing this the 36 was the incorrect product. Maybe I am missing something but after checking many times this seems to be a possible alternative solution.

The rules say there's just one incorrect digit. If you have a solution with 36 turning into, say, 16 or 35, please share, but I still think the solution is unique.
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