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Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep)
   LMI Tests -> Annual Competitions78 posts • Page 2 of 4 • 1 2 3 4
Administrator
Subject: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-26 9:52 PM (#8395 - in reply to #8290) (#8395) Top


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Location: India


Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-26 9:54 PM (#8396 - in reply to #8290) (#8396) Top


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Location: India
Dates : 1st - 3rd September

IB and Submission Link : here
prasanna16391
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-26 10:33 PM (#8397 - in reply to #8393) (#8397) Top


PR 2020 (Evergreens) Author

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Administrator - 2012-08-26 9:37 PM

So many guesses, but none of them are close

The name is the contest is just "Di..."


Eh? I think the person who guessed one of the puzzle types on it should get some credit ;)
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 7:09 PM (#8424 - in reply to #8290) (#8424) Top


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I would think everyone knows this, but let me in any case note that, Riad has been doing this twice-a-year internet online contest (one in April and then in September) in the Diogen website since 2008. (I'm not sure if there were contests older than 2008). Usually, the puzzles were very tough and the contests were open for 7 days.

This year he decided to change the format and make it a regular contest - keeping WPC in mind, and also decided to host the contest at LMI. Thanks Riad for doing this at LMI.

More about Riad can be found at LMI authors' page here

Edit : Riad has been conducting Internet-tests in the Diogen website from 2004. They were named IPST (Internet Puzzle Solvers Test). Dividing into April and September has begun with 2008.
kishy72
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 8:04 PM (#8425 - in reply to #8396) (#8425) Top


SM 2020 (Math) Author

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Administrator - 2012-08-26 9:54 PM

Dates : 1st - 3rd September

IB and Submission Link : here



DI denotes something in russian?took me a while to understand all the puzzles..will surely contest whether i m able to solve or not....and a beautiful innovative way to denote DI through deb and logic masters india in the instruction booklet......impressive!!!
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 8:21 PM (#8426 - in reply to #8425) (#8426) Top


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Location: India
kishy72 - 2012-08-27 8:04 PM
DI denotes something in russian?
No, names of all puzzles start with DI
(So distri's guess was closest to being correct, she guessed Diamonds which is also the name of the first puzzle)
neerajmehrotra
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 8:51 PM (#8427 - in reply to #8290) (#8427) Top




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DIAGONAL...connected with diagonals....
Ours brun
Subject: RE: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 10:00 PM (#8429 - in reply to #8290) (#8429) Top





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Am I missing something or is the solution of puzzle 13, "Division", wrong ? As I understand the rules, the "2" clue touches 2 mines and 1 ship part, therefore a total of 3 objects - which would be false. Is it correct ?
kishy72
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 10:21 PM (#8430 - in reply to #8426) (#8430) Top


SM 2020 (Math) Author

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Administrator - 2012-08-27 8:21 PM

kishy72 - 2012-08-27 8:04 PM
DI denotes something in russian?
No, names of all puzzles start with DI
(So distri's guess was closest to being correct, she guessed Diamonds which is also the name of the first puzzle)

hiii ...in puzzles 4 and 6 the content of the column is to be written from top to bottom or bottom to top?
prasanna16391
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 10:25 PM (#8431 - in reply to #8430) (#8431) Top


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kishy72 - 2012-08-27 10:21 PM

hiii ...in puzzles 4 and 6 the content of the column is to be written from top to bottom or bottom to top?


Since it is given as bottom to top, I think you can trust the IB ;)

Edit : Saw the given solution key and I see what you meant now, and now even I'm confused

We shall have to wait for the author to confirm either way I guess.

Administrator edits : It is always top to bottom. We'll get the text rectified.
prasanna16391
Subject: RE: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 10:28 PM (#8432 - in reply to #8429) (#8432) Top


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Ours brun - 2012-08-27 10:00 PM

Am I missing something or is the solution of puzzle 13, "Division", wrong ? As I understand the rules, the "2" clue touches 2 mines and 1 ship part, therefore a total of 3 objects - which would be false. Is it correct ?


It says "or", not "and", so I assume it means the clue either applies to one or the other and not the sum of the two types of objects. We'll wait for Riad to confirm that though.
Ours brun
Subject: RE: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 10:39 PM (#8433 - in reply to #8290) (#8433) Top





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Seems very plausible indeed, and slightly frightening. If it is confirmed, this is probably not the puzzle I will start with.
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 10:40 PM (#8434 - in reply to #8431) (#8434) Top


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prasanna16391 - 2012-08-27 10:25 PM

kishy72 - 2012-08-27 10:21 PM

hiii ...in puzzles 4 and 6 the content of the column is to be written from top to bottom or bottom to top?


Since it is given as bottom to top, I think you can trust the IB ;)
The answer key does not match with the answer key text.
Please note, it is always "Top to Bottom" (and "Left to Right", if applicable).

We will get the IB answer key text updated.
anurag
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-27 11:21 PM (#8435 - in reply to #8290) (#8435) Top




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The creativity and very narrow solve paths that show in all the puzzles the author has ever designed are very commendable and sometimes really intriguing.

Edited by anurag 2012-08-27 11:21 PM
Riad Khanmagomedov
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-28 12:29 PM (#8442 - in reply to #8430) (#8442) Top


Moscow Puzzle Cup 2016 Author

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From top to bottom, sorry.
Riad Khanmagomedov
Subject: RE: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-28 12:33 PM (#8443 - in reply to #8432) (#8443) Top


Moscow Puzzle Cup 2016 Author

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In the example of the puzzle 13. Division number 2 should point to either 2 mines, or on 2 parts of ships.
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-28 1:49 PM (#8444 - in reply to #8290) (#8444) Top


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Question in email :
Does Di... count for the monthly test ratings or not?
No
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-29 8:54 PM (#8452 - in reply to #8290) (#8452) Top


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Serkan has collected some practice materials from earlier IPSTs





Attachments
----------------
Attachments Di_PRACTICE.pdf (166KB - 50 downloads)
Para
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 1:07 AM (#8455 - in reply to #8290) (#8455) Top




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Just one question.

8. Dioxides
Can the molecules lie diagonally or are all connections orthogonally?
anurag
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 11:09 AM (#8456 - in reply to #8455) (#8456) Top




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All moleculues/dioxides puzzles i have seen had orthogonally connected atoms.I assume the same here.
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 1:00 PM (#8457 - in reply to #8290) (#8457) Top


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Here is the Differences puzzle from 2007 Internet Puzzle Solvers Test - Thanks Riad for sharing.



(Differences.png)



Attachments
----------------
Attachments Differences.png (40KB - 10 downloads)
forcolin
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 1:50 PM (#8458 - in reply to #8290) (#8458) Top





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I remember from the old time that Osmium is one of the few elements having a possible oxydation state +8 therefore forming the tetraoxyde OsO4. So my first impression was that the puzzle is wrong. But I have consulted the literature and found that the dioxide is also possible at a lower oxydation state, so the puzzle is chemically correct.

I have a question about Dikuro. The instructions say that "no digits can repeat in a sum". but in the example posted by Serkan there are some blank boxes in which no sum is indicated. Can digits repeat in a row or in a column if no digit is show at the beginning ?
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 2:06 PM (#8459 - in reply to #8458) (#8459) Top


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forcolin - 2012-08-30 1:50 PM
I have a question about Dikuro. The instructions say that "no digits can repeat in a sum". but in the example posted by Serkan there are some blank boxes in which no sum is indicated. Can digits repeat in a row or in a column if no digit is show at the beginning ?
The format is slightly changed, and the blank boxes with no sum are replaced by "?" (also seen in the example booklet). Digits will not repeat if there is a "?" instead of a sum.

EDIT : Further clarification on Dikuro : Even at the top of the column (or left of the row) where there is no "?" or no digit (also seen in practice pdf), digits can not repeat.
Also, It will be obvious from the contest puzzle that "?" can represent 1 digit or 2 digits.
Administrator
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 3:01 PM (#8460 - in reply to #8455) (#8460) Top


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Para - 2012-08-30 1:07 AM

8. Dioxides
Can the molecules lie diagonally or are all connections orthogonally?
The molecules can not be connected diagonally, they have to be joined orthogonally (as in the example).
kishy72
Subject: Re: Di... — SEPTEMBER’S CONTEST 2012 — (1st - 3rd Sep) @ 2012-08-30 8:09 PM (#8461 - in reply to #8452) (#8461) Top


SM 2020 (Math) Author

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Administrator - 2012-08-29 8:54 PM

Serkan has collected some practice materials from earlier IPSTs


great work serkan!!was desperate to see a diamond puzzle question which has all the cards from 2 to 10 and u have posted one ..good work admin!..will be of immense help if model puzzles like these are posted before any monthly puzzle test
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