forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018
Administrator
Subject: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-12 5:50 PM (#24242) (#24242) Top


20001001001001002020
Location: India





http://logicmastersindia.com/2018/forsmarts/

Contest Duration = 100 minutes


Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-14 11:11 AM (#24254 - in reply to #24242) (#24254) Top


20001001001001002020
Location: India
Instruction Booklet is available now.
auroux
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-14 11:52 AM (#24256 - in reply to #24242) (#24256) Top


Hex Slitherlink Author

Posts: 92
20202020
Location: France
Looks VERY nice!
(Small note about IB: the example for puzzle #2 (kropki) is missing a couple of dots in column 2..)
Denis
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-14 1:22 PM (#24258 - in reply to #24256) (#24258) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
auroux - 2018-02-14 11:52 AM
(Small note about IB: the example for puzzle #2 (kropki) is missing a couple of dots in column 2..)

My bad, missed those dots :(
Re-checking the competition grids to make sure I've made no more mistakes :)
tamz29
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 12:52 AM (#24264 - in reply to #24258) (#24264) Top




Posts: 158
1002020
Location: Thailand
A few questions:

3. Cornerless Snake
Can the missing half of turning cells, be on the inner side instead?

5. Triangular Battleships
"Numbers outside the grid indicate to product of all lengths occupied by the ships in the corresponding rows/columns."
I don't understand this.

10. Unknown Calendar
"Each pair of consecutive numbers should have at least one digit in common and has to be placed
in either same row or same column of the bottom table"
Is this two requirements or just one needed to be satisfied?
In the example, you have 29 and 18 in the same column, can they be consecutive in the puzzle grid?

"For example, 15 can be followed by 11 or 25, but not by 10 (different rows) or 17 (difference is less
than 4)."
But there is no 10 in the table.

11. Unknown Diginet
Can the lines be diagonal?
swaroop2011
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 3:49 AM (#24265 - in reply to #24242) (#24265) Top


WSPC Organizer

Posts: 532
50020
Location: india
I have following questions:
1) What is the duration of the contest? (No time limit?)

2) Cornerless Snake - I don't understand the meaning of "On every turn half the cell is cut away." What is a turn defined here?
For e.g. R3c1 to R2c1 is it defined as turn?
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 9:59 AM (#24266 - in reply to #24265) (#24266) Top


20001001001001002020
Location: India
swaroop2011 - 2018-02-15 3:49 AM

1) What is the duration of the contest? (No time limit?)

100 minutes
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 10:04 AM (#24267 - in reply to #24264) (#24267) Top


20001001001001002020
Location: India
tamz29 - 2018-02-15 12:52 AM

5. Triangular Battleships
"Numbers outside the grid indicate to product of all lengths occupied by the ships in the corresponding rows/columns."
I don't understand this.

"Numbers outside the grid indicate THE product of all lengths occupied by the ships in the corresponding rows/columns."

In the IB example,
- In row 2, the product is (1/2) x (3/2) = (3/4)
- In row 3, it is (1/2) x (1/2) x (1./2) = (1/8)
- In column 5, it is (1/2) x (5/2) = (5/4)
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 10:07 AM (#24268 - in reply to #24267) (#24268) Top


20001001001001002020
Location: India

Contest page


The contest page for submission will be http://logicmastersindia.com/2018/forsmarts/

Puzzle Booklet shall be available before the contest starts.

Contest Duration = 100 minutes

Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 10:21 AM (#24269 - in reply to #24242) (#24269) Top


20001001001001002020
Location: India
Past winners of forsmarts anniversary contests:

forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 2:12 PM (#24271 - in reply to #24264) (#24271) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
tamz29 - 2018-02-15 12:52 AM
3. Cornerless Snake
Can the missing half of turning cells, be on the inner side instead?

Can't see any point in leaving outer half as it'll make the puzzle no different to a usual Snake.
So the answer would be "no".

tamz29 - 2018-02-15 12:52 AM
5. Triangular Battleships
"Numbers outside the grid indicate to product of all lengths occupied by the ships in the corresponding rows/columns."
I don't understand this.

For example, there's two segments occupied by the ships in a row: 1/2 and 3/2 (1+1/2). Then the clue outside would be: 1/2*3/2=3/4.

tamz29 - 2018-02-15 12:52 AM
10. Unknown Calendar
"Each pair of consecutive numbers should have at least one digit in common and has to be placed
in either same row or same column of the bottom table"
Is this two requirements or just one needed to be satisfied?
In the example, you have 29 and 18 in the same column, can they be consecutive in the puzzle grid?
"For example, 15 can be followed by 11 or 25, but not by 10 (different rows) or 17 (difference is less
than 4)."
But there is no 10 in the table.

There might be in an actual puzzle.

tamz29 - 2018-02-15 12:52 AM
11. Unknown Diginet
Can the lines be diagonal?

As long as they connect the numbers, they can go whatever direction you wish.
forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 3:05 PM (#24272 - in reply to #24265) (#24272) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
swaroop2011 - 2018-02-15 3:49 AM
2) Cornerless Snake - I don't understand the meaning of "On every turn half the cell is cut away." What is a turn defined here?
For e.g. R3c1 to R2c1 is it defined as turn?

The picture shows how the snake looked like before the corners were cut off. I hope now it's clearer.
Nikola
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 3:39 PM (#24273 - in reply to #24271) (#24273) Top


Sudoku Day Author

Posts: 95
20202020
Location: Serbia
11. Unknown Diginet
Can we use the inserted digits for new crossings?
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 4:34 PM (#24274 - in reply to #24242) (#24274) Top


20001001001001002020
Location: India

Contest Duration


The contest duration will be 100 minutes (not 150 minutes, as mentioned earlier).

forsmarts
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 5:15 PM (#24275 - in reply to #24273) (#24275) Top


forsmarts 13th Anniversary Contest Author

Posts: 33
20
Location: Belarus
Nikola - 2018-02-15 3:39 PM
11. Unknown Diginet
Can we use the inserted digits for new crossings?

I'm not sure I understand the question.
If you're asking whether the inserted digit can be a start for a new line then the answer is "no". The lines should connect the originally given numbers only.
Nikola
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 6:02 PM (#24277 - in reply to #24275) (#24277) Top


Sudoku Day Author

Posts: 95
20202020
Location: Serbia
Yes, that is what I thought. Thanks!
swaroop2011
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 8:54 PM (#24279 - in reply to #24272) (#24279) Top


WSPC Organizer

Posts: 532
50020
Location: india
forsmarts - 2018-02-15 3:05 PM

swaroop2011 - 2018-02-15 3:49 AM
2) Cornerless Snake - I don't understand the meaning of "On every turn half the cell is cut away." What is a turn defined here?
For e.g. R3c1 to R2c1 is it defined as turn?

The picture shows how the snake looked like before the corners were cut off. I hope now it's clearer.


Thanks. Got it.
Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 11:34 PM (#24280 - in reply to #24242) (#24280) Top


20001001001001002020
Location: India

Puzzle Booklet


The Puzzle Booklet is now available for download.

Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-15 11:59 PM (#24281 - in reply to #24280) (#24281) Top


20001001001001002020
Location: India
The test is active now. The test can be started till 23:59 IST / 18:29 GMT on Monday (19th).

Good luck to all participants!
An LMI player
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-16 2:49 AM (#24282 - in reply to #24242) (#24282) 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? Incorrect Products
 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


Administrator
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-18 10:36 PM (#24286 - in reply to #24282) (#24286) Top


20001001001001002020
Location: India

Forum Thread Issue resolved


Over the last two days, some users faced an error when accessing this forum thread for forsmarts contest. The issue is resolved now. All participants can access the thread and post their feedback or comments now.

chaotic_iak
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-19 3:16 AM (#24287 - in reply to #24242) (#24287) Top



NEW, HUGE, AND CHALLENGING Author

Posts: 214
100100
Location: Indonesia
 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Fairly 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


A good mix of puzzles -- with a mix of quality, too. But most puzzles are good. Let's see:

- Non-Integer Kakuro: This is just Missing Digits Kakuro (or something like that). The non-integer part isn't utilized much. And honestly I don't think you can do much with Non-Integer Kakuro that you can't do with Kakuro with nonstandard set.
- Non-Integer Kropki: You can just multiply by 2 to get normal Kropki except white circles have difference 2. But at least this one changes the meaning of the circles, and so is a more interesting application.
- Cornerless Snake: This is actually a very interesting design, even if I ended up intuiting it. Still need to figure out a more logical approach, but this puzzle was good. Answer key was less good though; I'm not sure if H, F, - make the best answers, but I feel like it could have been better.
- Triangular Minesweepers: Both puzzles were incredible, although I think the large one ended up needing a few "I think this must go this way" reasoning near the end. Very good showcase of these puzzles. Answer key was... weird; could have gone with all letters (Mine / Empty, for example), or something that involves orientations of the mines too.
- Triangular Battleships: I also mostly intuited it, but I think it has a nice logical solution. And even though its name is Battleships, its logic has nearly nothing in common with it.
- Incorrect Easy As ABC: Somehow this one doesn't seem quite penetrable and I had to resort to guessing a lot. My first opinion is that this type is kinda brute-forcy, but if someone can show a logical solution...
- Incorrect Products: This one, though, is way fairer. I identified the two conflicting clues right away. These liar puzzles seem to be best if there's a clear set of contradicting clues, which I don't believe I find in Easy As ABC.
- Incorrect Calcudoku: Same as above, although the contradicting clues aren't as clear. But still very reasonable.
- Incorrect Spiral Galaxies: Ehhh, I intuited this through like usual Spiral Galaxies. I'm sure it's possible to do it logically, but most Spiral Galaxies fall through with intuition easier.
- Unknown Calendar: Oops I skipped this. But "sharing a digit" and "in the same row/column" are two different things and the instructions should have exactly stated which one. At the current state, 2 and 10 may or may not be adjacent.
- Unknown Diginet: Okay this is an incredibly weird genre and I'm not sure whether I like it or not. I ended up intuiting it and I'm not sure what logical solution I can possibly obtain from this genre. The answer key is also not something I'm sure I like.
- Unknown Pentomino: This one falls through fairly, and nothing particularly notable.
- Instructionless Alpha: This is a pretty good genre idea, although the logic falls through very easily once you get the tricks. Answer key was a big mess though; should have gone with the same symbols instead of translating to B and F.
- Instructionless Beta: Oops I still can't figure this out.
- Instructionless Gamma: Region borders might have been better clearer, but otherwise this lends itself to easy puzzles. Not certain the answer key was the best (could have gone with the standard "longest/all segments in marked rows/columns").

So, all in all: interesting puzzles, some less-than-perfect applications but mostly good, some less-than-perfect answer keys as well, but I enjoyed the interesting genres.
kiwijam
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-19 3:19 PM (#24289 - in reply to #24242) (#24289) Top




Posts: 132
10020
Location: New Zealand
 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? Instructionless Gamma
 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


I was able to answer both Alphas without finishing the puzzle, due to the answer keys pointing to easy rows.
Not sure why rightmost lines were used, leftmost feels more 'normal'.
Alpha Small felt like it had 2 solutions?
Don't like the Beta example.
I solved the first two as integer puzzles, which I think is a nicer presentation.
Gamma, Unknown Pentomino, and Alpha were my favourite new types.
An LMI player
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-19 7:35 PM (#24290 - in reply to #24242) (#24290) 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? Non-Integer Kropki
 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


ABcDexter
Subject: Re: forsmarts 15th Anniversary contest (2017) - 16th to 19th Feb 2018 @ 2018-02-19 7:51 PM (#24291 - in reply to #24242) (#24291) Top




Posts: 7

Location: INDIA
 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? Non-Integer Kakuro
 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


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


20001001001001002020
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: 77
202020
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: 132
10020
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


WSPC Organizer

Posts: 532
50020
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



NEW, HUGE, AND CHALLENGING Author

Posts: 214
100100
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


WSPC Organizer

Posts: 1334
100010010010020
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: 38
20
Location: USA
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: 158
1002020
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: 307
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



NEW, HUGE, AND CHALLENGING Author

Posts: 214
100100
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


20001001001001002020
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: 307
100100100
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: 137
10020
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: 38
20
Location: USA
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: 5

Location: USA
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.