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forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 201850 posts • Page 2 of 2 • 1 2
@ 2018-02-21 6:41 AM (#24302 - in reply to #24242) (#24302) Top

chaotic_iak




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chaotic_iak posted @ 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
@ 2018-02-21 3:26 PM (#24304 - in reply to #24302) (#24304) Top

prasanna16391



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prasanna16391 posted @ 2018-02-21 3:26 PM

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.
@ 2018-02-21 3:35 PM (#24305 - in reply to #24242) (#24305) Top

forsmarts



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forsmarts posted @ 2018-02-21 3:35 PM

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
@ 2018-02-21 3:43 PM (#24306 - in reply to #24242) (#24306) Top

skrzypl1



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Country : Poland

skrzypl1 posted @ 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?

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
@ 2018-02-21 4:13 PM (#24307 - in reply to #24306) (#24307) Top

forsmarts



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forsmarts posted @ 2018-02-21 4:13 PM

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.
@ 2018-02-22 10:22 AM (#24311 - in reply to #24242) (#24311) Top

Ziti



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Ziti posted @ 2018-02-22 10:22 AM

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.
@ 2018-02-22 4:22 PM (#24314 - in reply to #24311) (#24314) Top

forsmarts



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forsmarts posted @ 2018-02-22 4:22 PM

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
@ 2018-02-22 11:49 PM (#24318 - in reply to #24242) (#24318) Top

tamz29



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tamz29 posted @ 2018-02-22 11:49 PM

Great puzzles and a lot of new ideas!
Is there a way to see the puzzles from the aforementioned Moscow Cup ?
@ 2018-02-23 1:37 AM (#24321 - in reply to #24318) (#24321) Top

forsmarts



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forsmarts posted @ 2018-02-23 1:37 AM

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.
@ 2018-02-23 5:58 AM (#24323 - in reply to #24242) (#24323) Top

Para



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Para posted @ 2018-02-23 5:58 AM

Isn’t this a valid solution for Incorrect Products too?

42513
31452
23145
54231
15324
@ 2018-02-23 6:55 AM (#24324 - in reply to #24242) (#24324) Top

chaotic_iak




Posts: 241
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chaotic_iak posted @ 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.

Edited by chaotic_iak 2018-02-23 6:56 AM
@ 2018-02-23 9:03 AM (#24326 - in reply to #24324) (#24326) Top

Administrator



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Administrator posted @ 2018-02-23 9:03 AM

Solution Booklet available now.
@ 2018-02-23 10:29 AM (#24327 - in reply to #24324) (#24327) Top

Para



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Para posted @ 2018-02-23 10:29 AM

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.
@ 2018-02-24 8:36 PM (#24332 - in reply to #24242) (#24332) Top

rob



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rob posted @ 2018-02-24 8:36 PM

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).
@ 2018-02-24 11:56 PM (#24334 - in reply to #24332) (#24334) Top

forsmarts



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forsmarts posted @ 2018-02-24 11:56 PM

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.
@ 2018-02-25 3:46 AM (#24335 - in reply to #24242) (#24335) Top

Ziti



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Ziti posted @ 2018-02-25 3:46 AM

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! :)
@ 2018-02-27 1:25 PM (#24362 - in reply to #24242) (#24362) Top

Eugene Porter



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Country : United States

Eugene Porter posted @ 2018-02-27 1:25 PM

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.
@ 2018-02-27 8:22 PM (#24364 - in reply to #24362) (#24364) Top

forsmarts



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forsmarts posted @ 2018-02-27 8:22 PM

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.
forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 201850 posts • Page 2 of 2 • 1 2
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