Thread - Di... — SEPTEMBER’S CONTEST 2012

@ 2012-08-26 5:08 AM (#8362 - in reply to #8290) (#8362) Top

Fred76

Posts: 337

Country : Switzerland

Fred76 posted @ 2012-08-26 5:08 AM

...gression, haha !

@ 2012-08-26 5:28 AM (#8364 - in reply to #8362) (#8364) Top

Fred76

Posts: 337

Country : Switzerland

Fred76 posted @ 2012-08-26 5:28 AM

...thyrambic !

@ 2012-08-26 9:37 PM (#8393 - in reply to #8290) (#8393) Top

Administrator

Country : India

Administrator posted @ 2012-08-26 9:37 PM

So many guesses, but none of them are close

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

@ 2012-08-26 9:52 PM (#8395 - in reply to #8290) (#8395) Top

Administrator

Country : India

Administrator posted @ 2012-08-26 9:52 PM

@ 2012-08-26 9:54 PM (#8396 - in reply to #8290) (#8396) Top

Administrator

Country : India

Administrator posted @ 2012-08-26 9:54 PM

Dates : 1^st - 3^rd September

IB and Submission Link : here

@ 2012-08-26 10:33 PM (#8397 - in reply to #8393) (#8397) Top

prasanna16391

Posts: 1801

Country : India

prasanna16391 posted @ 2012-08-26 10:33 PM

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 ;)

@ 2012-08-27 7:09 PM (#8424 - in reply to #8290) (#8424) Top

Administrator

Country : India

Administrator posted @ 2012-08-27 7:09 PM

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.

@ 2012-08-27 8:04 PM (#8425 - in reply to #8396) (#8425) Top

kishy72

Posts: 419

Country : India

kishy72 posted @ 2012-08-27 8:04 PM

Administrator - 2012-08-26 9:54 PM

Dates : 1^st - 3^rd 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!!!

@ 2012-08-27 8:21 PM (#8426 - in reply to #8425) (#8426) Top

Administrator

Country : India

Administrator posted @ 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)

@ 2012-08-27 8:51 PM (#8427 - in reply to #8290) (#8427) Top

neerajmehrotra

Posts: 329

Country : India

neerajmehrotra posted @ 2012-08-27 8:51 PM

DIAGONAL...connected with diagonals....

@ 2012-08-27 10:00 PM (#8429 - in reply to #8290) (#8429) Top

Ours brun

Posts: 148

Country : France

Ours brun posted @ 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 ?

@ 2012-08-27 10:21 PM (#8430 - in reply to #8426) (#8430) Top

kishy72

Posts: 419

Country : India

kishy72 posted @ 2012-08-27 10:21 PM

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?

@ 2012-08-27 10:25 PM (#8431 - in reply to #8430) (#8431) Top

prasanna16391

Posts: 1801

Country : India

prasanna16391 posted @ 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 ;)

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.

@ 2012-08-27 10:28 PM (#8432 - in reply to #8429) (#8432) Top

prasanna16391

Posts: 1801

Country : India

prasanna16391 posted @ 2012-08-27 10:28 PM

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.

@ 2012-08-27 10:39 PM (#8433 - in reply to #8290) (#8433) Top

Ours brun

Posts: 148

Country : France

Ours brun posted @ 2012-08-27 10:39 PM

Seems very plausible indeed, and slightly frightening. If it is confirmed, this is probably not the puzzle I will start with.

@ 2012-08-27 10:40 PM (#8434 - in reply to #8431) (#8434) Top

Administrator

Country : India

Administrator posted @ 2012-08-27 10:40 PM

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.

@ 2012-08-27 11:21 PM (#8435 - in reply to #8290) (#8435) Top

anurag

Posts: 136

Country : India

anurag posted @ 2012-08-27 11:21 PM

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

@ 2012-08-28 12:29 PM (#8442 - in reply to #8430) (#8442) Top

Riad Khanmagomedov

Posts: 234

Country : Russia

Riad Khanmagomedov posted @ 2012-08-28 12:29 PM

From top to bottom, sorry.

@ 2012-08-28 12:33 PM (#8443 - in reply to #8432) (#8443) Top

Riad Khanmagomedov

Posts: 234

Country : Russia

Riad Khanmagomedov posted @ 2012-08-28 12:33 PM

In the example of the puzzle 13. Division number 2 should point to either 2 mines, or on 2 parts of ships.

@ 2012-08-28 1:49 PM (#8444 - in reply to #8290) (#8444) Top

Administrator

Country : India

Administrator posted @ 2012-08-28 1:49 PM

Question in email :
Does Di... count for the monthly test ratings or not?

@ 2012-08-29 8:54 PM (#8452 - in reply to #8290) (#8452) Top

Administrator

Country : India

Administrator posted @ 2012-08-29 8:54 PM

Serkan has collected some practice materials from earlier IPSTs

Attachments
----------------

Di_PRACTICE.pdf (166KB - 51 downloads)

@ 2012-08-30 1:07 AM (#8455 - in reply to #8290) (#8455) Top

Para

Posts: 315

Country : The Netherlands

Para posted @ 2012-08-30 1:07 AM

Just one question.

8. Dioxides
Can the molecules lie diagonally or are all connections orthogonally?

@ 2012-08-30 11:09 AM (#8456 - in reply to #8455) (#8456) Top

anurag

Posts: 136

Country : India

anurag posted @ 2012-08-30 11:09 AM

All moleculues/dioxides puzzles i have seen had orthogonally connected atoms.I assume the same here.

@ 2012-08-30 1:00 PM (#8457 - in reply to #8290) (#8457) Top

Administrator

Country : India

Administrator posted @ 2012-08-30 1:00 PM

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

(Differences.png)

Attachments
----------------

Differences.png (40KB - 10 downloads)

@ 2012-08-30 1:50 PM (#8458 - in reply to #8290) (#8458) Top

forcolin

Posts: 172

Country : ITALY

forcolin posted @ 2012-08-30 1:50 PM

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 ?


	@ 2012-08-26 5:08 AM (#8362 - in reply to #8290) (#8362) Top
Fred76 Posts: 337 Country : Switzerland	Fred76 posted @ 2012-08-26 5:08 AM ...gression, haha !
	@ 2012-08-26 5:28 AM (#8364 - in reply to #8362) (#8364) Top
Fred76 Posts: 337 Country : Switzerland	Fred76 posted @ 2012-08-26 5:28 AM ...thyrambic !
	@ 2012-08-26 9:37 PM (#8393 - in reply to #8290) (#8393) Top
Administrator Country : India	Administrator posted @ 2012-08-26 9:37 PM So many guesses, but none of them are close The name is the contest is just "Di..."
	@ 2012-08-26 9:52 PM (#8395 - in reply to #8290) (#8395) Top
Administrator Country : India	Administrator posted @ 2012-08-26 9:52 PM
	@ 2012-08-26 9:54 PM (#8396 - in reply to #8290) (#8396) Top
Administrator Country : India	Administrator posted @ 2012-08-26 9:54 PM Dates : 1^st - 3^rd September IB and Submission Link : here
	@ 2012-08-26 10:33 PM (#8397 - in reply to #8393) (#8397) Top
prasanna16391 Posts: 1801 Country : India	prasanna16391 posted @ 2012-08-26 10:33 PM 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 ;)
	@ 2012-08-27 7:09 PM (#8424 - in reply to #8290) (#8424) Top
Administrator Country : India	Administrator posted @ 2012-08-27 7:09 PM 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.
	@ 2012-08-27 8:04 PM (#8425 - in reply to #8396) (#8425) Top
kishy72 Posts: 419 Country : India	kishy72 posted @ 2012-08-27 8:04 PM Administrator - 2012-08-26 9:54 PM Dates : 1^st - 3^rd 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!!!
	@ 2012-08-27 8:21 PM (#8426 - in reply to #8425) (#8426) Top
Administrator Country : India	Administrator posted @ 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)
	@ 2012-08-27 8:51 PM (#8427 - in reply to #8290) (#8427) Top
neerajmehrotra Posts: 329 Country : India	neerajmehrotra posted @ 2012-08-27 8:51 PM DIAGONAL...connected with diagonals....
	@ 2012-08-27 10:00 PM (#8429 - in reply to #8290) (#8429) Top
Ours brun Posts: 148 Country : France	Ours brun posted @ 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 ?
	@ 2012-08-27 10:21 PM (#8430 - in reply to #8426) (#8430) Top
kishy72 Posts: 419 Country : India	kishy72 posted @ 2012-08-27 10:21 PM 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?
	@ 2012-08-27 10:25 PM (#8431 - in reply to #8430) (#8431) Top
prasanna16391 Posts: 1801 Country : India	prasanna16391 posted @ 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 ;) 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.
	@ 2012-08-27 10:28 PM (#8432 - in reply to #8429) (#8432) Top
prasanna16391 Posts: 1801 Country : India	prasanna16391 posted @ 2012-08-27 10:28 PM 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.
	@ 2012-08-27 10:39 PM (#8433 - in reply to #8290) (#8433) Top
Ours brun Posts: 148 Country : France	Ours brun posted @ 2012-08-27 10:39 PM Seems very plausible indeed, and slightly frightening. If it is confirmed, this is probably not the puzzle I will start with.
	@ 2012-08-27 10:40 PM (#8434 - in reply to #8431) (#8434) Top
Administrator Country : India	Administrator posted @ 2012-08-27 10:40 PM 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.
	@ 2012-08-27 11:21 PM (#8435 - in reply to #8290) (#8435) Top
anurag Posts: 136 Country : India	anurag posted @ 2012-08-27 11:21 PM 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
	@ 2012-08-28 12:29 PM (#8442 - in reply to #8430) (#8442) Top
Riad Khanmagomedov Posts: 234 Country : Russia	Riad Khanmagomedov posted @ 2012-08-28 12:29 PM From top to bottom, sorry.
	@ 2012-08-28 12:33 PM (#8443 - in reply to #8432) (#8443) Top
Riad Khanmagomedov Posts: 234 Country : Russia	Riad Khanmagomedov posted @ 2012-08-28 12:33 PM In the example of the puzzle 13. Division number 2 should point to either 2 mines, or on 2 parts of ships.
	@ 2012-08-28 1:49 PM (#8444 - in reply to #8290) (#8444) Top
Administrator Country : India	Administrator posted @ 2012-08-28 1:49 PM Question in email : Does Di... count for the monthly test ratings or not? No
	@ 2012-08-29 8:54 PM (#8452 - in reply to #8290) (#8452) Top
Administrator Country : India	Administrator posted @ 2012-08-29 8:54 PM Serkan has collected some practice materials from earlier IPSTs Attachments ---------------- Di_PRACTICE.pdf (166KB - 51 downloads)
	@ 2012-08-30 1:07 AM (#8455 - in reply to #8290) (#8455) Top
Para Posts: 315 Country : The Netherlands	Para posted @ 2012-08-30 1:07 AM Just one question. 8. Dioxides Can the molecules lie diagonally or are all connections orthogonally?
	@ 2012-08-30 11:09 AM (#8456 - in reply to #8455) (#8456) Top
anurag Posts: 136 Country : India	anurag posted @ 2012-08-30 11:09 AM All moleculues/dioxides puzzles i have seen had orthogonally connected atoms.I assume the same here.
	@ 2012-08-30 1:00 PM (#8457 - in reply to #8290) (#8457) Top
Administrator Country : India	Administrator posted @ 2012-08-30 1:00 PM Here is the Differences puzzle from 2007 Internet Puzzle Solvers Test - Thanks Riad for sharing. (Differences.png) Attachments ---------------- Differences.png (40KB - 10 downloads)
	@ 2012-08-30 1:50 PM (#8458 - in reply to #8290) (#8458) Top
forcolin Posts: 172 Country : ITALY	forcolin posted @ 2012-08-30 1:50 PM 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 ?