Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020
Administrator
Subject: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-14 9:24 AM (#28233) (#28233) Top


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Location: India



Link for rules and other details about Puzzle Ramayan: http://logicmastersindia.com/PR/2020pr.asp
Instructions for Casual and Word - http://logicmastersindia.com/PR/202005/


Administrator
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-16 10:00 AM (#28239 - in reply to #28233) (#28239) Top


2000500100100100202020
Location: India

Instruction Booklet


The Instruction Booklet is now available: http://logicmastersindia.com/PR/202005/

amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-16 9:21 PM (#28240 - in reply to #28239) (#28240) Top



PR 2020 (Casual and Word) Author

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I have posted one practice puzzle here:
https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=0003HD
mstang
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-19 11:04 AM (#28244 - in reply to #28233) (#28244) Top





Posts: 63
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Location: USA
Questions about Matchsticks:

* Can we move a matchstick to create a negative sign?
* Is the given spacing necessarily maintained? For example, if we started with 77, could we move one matchstick to get 0 (the top of the left 7 to the bottom right, and then squish the two digits together)?
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-19 4:24 PM (#28245 - in reply to #28244) (#28245) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
Mathematical operators including negative signs are not allowed.

Only digits as shown in the image are allowed ( 2 matches high and one match stick wide).

In the final answer the digits cannot touch each other. Spacing between the final digits is not important.

Also all the matchsticks need to be used. None of them can be discarded or overlapped.

I hope this answers your questions.
Administrator
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-21 8:21 PM (#28246 - in reply to #28245) (#28246) Top


2000500100100100202020
Location: India

(Updated) Instruction Booklet


An updated version of the Instruction Booklet is now available: http://logicmastersindia.com/PR/202005/

Changes
(1) Matchsticks: Instructions updated as per forum discussion
(2) Word Division: The grid will now have dotted lines inside the grid, in order to aid better solving.

rakesh_rai
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-21 8:29 PM (#28247 - in reply to #28246) (#28247) Top



Mean Minis (2020) Author

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Grizix - 2020-04-18 9:44 PM

...hands trembling from one letter to another, eyes staring wildely to find the good letter.

Grizix: Are the answer keys ok for you in this PR episode?
kiwijam
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 2:20 AM (#28249 - in reply to #28233) (#28249) Top




Posts: 157
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Location: New Zealand
With Matchsticks, sometimes you can get a lower number by moving less than N matchsticks. I assume this is ok?

For example: N=2, start="70". With 1 move I can get to 18, but if 2 matches have to be in new places then the answer will be higher.
Administrator
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 11:39 AM (#28250 - in reply to #28233) (#28250) Top


2000500100100100202020
Location: India

Puzzle Booklet


The password protected Puzzle Booklet is now available here: http://logicmastersindia.com/PR/202005/

rakesh_rai
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 11:56 AM (#28251 - in reply to #28249) (#28251) Top



Mean Minis (2020) Author

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kiwijam - 2020-05-22 2:20 AM

With Matchsticks, sometimes you can get a lower number by moving less than N matchsticks. I assume this is ok?

For example: N=2, start="70". With 1 move I can get to 18, but if 2 matches have to be in new places then the answer will be higher.

Exactly N matchsticks need to be moved. Solution obtained by moving "Less than N matchsticks" will be invalid. I hope this clarifies.
tamz29
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 4:28 PM (#28253 - in reply to #28233) (#28253) Top




Posts: 182
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Location: Thailand
Thanks for the test!
Like last year, I tore through the Word half and was seriously bogged down by the Casual section, especially Curve Data.
The gimmick in #5 Mastermind was beautiful, the solving path of the hard Scrabble with the H's was also nice.
The continuous theme of easy, medium, hard deserves praise.
I'm not sure if #3 Matchsticks was prone to hacking.
I bypassed the entire solve by realizing that there are 23 matches and the smallest number you can make with that is 1888.

Wondering if the last puzzle's answer key was intentional :)

Loved this set, but obviously biased due to my love of Word puzzles.
Look forward to Casual and Word PR 2021 already!

Edited by tamz29 2020-05-22 4:33 PM
Puzzle_Maestro
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 7:28 PM (#28254 - in reply to #28233) (#28254) Top




Posts: 12

Location: UK
 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? Word Division
 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


Lovely puzzles, and lovely theme! All the puzzles were thoroughly logical which I very much appreciated.

In my opinion, the curve data puzzles were a little overrated, as I finished the set in a little over 3 minutes. But maybe I just got lucky.
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 9:14 PM (#28255 - in reply to #28253) (#28255) Top



PR 2020 (Casual and Word) Author

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Thanks for the feedback Tawan.

The 3rd matchstick puzzle was open to hacking and we were wondering whether to reduce the points for the puzzle. In the end the points were kept high to reward those who got the trick.

The answer key for the last puzzle was not deliberate, but since it turned up like that I thought I might as well sign off with that :)
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-22 9:28 PM (#28256 - in reply to #28254) (#28256) Top



PR 2020 (Casual and Word) Author

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Location: India
Puzzle_Maestro - 2020-05-22 7:28 PM

Lovely puzzles, and lovely theme! All the puzzles were thoroughly logical which I very much appreciated.

In my opinion, the curve data puzzles were a little overrated, as I finished the set in a little over 3 minutes. But maybe I just got lucky.


Thanks.
Curve Data and Matchsticks are high variance puzzles. Curve data especially benefits from having a good intuition about the type.
An LMI player
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-23 12:54 AM (#28257 - in reply to #28233) (#28257) 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? Fairly Nice
 Which set of puzzles did you like the most? Double Cross
 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


WA1729
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-23 6:49 AM (#28258 - in reply to #28233) (#28258) Top


Shading and Loops (PR 2016/17) Author

Posts: 44
2020
Location: USA
 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? Matchsticks
 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


Really fun - the theme was fantastic!

Favorites:
3 Matchsticks
5 Mastermind
10 Letter Weights
14 Letter Scrabble
17 Double Cross
18 Double Cross
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-23 2:43 PM (#28259 - in reply to #28258) (#28259) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Thanks Walker, I will be publishing the remaining puzzles which complete the sets of 3 theme after the competition is over.
prasanna16391
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 5:12 AM (#28260 - in reply to #28259) (#28260) Top


PR 2020 (Evergreens) Author

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I always dread this round most in the PR series (mostly something I should work on improving), but this was super fun, and also had a very neat theme. I loved how the thematic sets represented the correct difficulty too for the most part.

I got in my own head with the HARD Curve Data. I should have done it much sooner and omitted a key possibility visually which I shouldn't have. I came back to it with a fresh mind at the end and immediately saw it. Really dumb of me. Also, I have a phobia of Masterminds and so avoided them till the end but I probably shouldn't have as these were way more clearly logical than most Masterminds I have done in the past (or I may just have spotted it quicker) and I zipped through them right after the contest. Probably if the Curve Data mess up hadn't upset my rhythm I could have finished this set.

Other than all that personal drama, this was an excellent contest. My favorites were probably the Cross Words section. Thanks Amit!
prasanna16391
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 5:13 AM (#28261 - in reply to #28259) (#28261) Top


PR 2020 (Evergreens) Author

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amitsowani - 2020-05-23 2:43 PM

Thanks Walker, I will be publishing the remaining puzzles which complete the sets of 3 theme after the competition is over.


Awesome. Can't wait! :)
kartal
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 5:25 AM (#28263 - in reply to #28233) (#28263) Top




Posts: 1

Location: Hungary
 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? Word Division
 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? Too many pages / too large grids


vopani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 1:15 PM (#28264 - in reply to #28233) (#28264) Top


WSPC Organizer

Posts: 713
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 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? Curve Data
 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


Too hard but what an incredible set of puzzles. Most of the themes were fantastic and the answer key of that Word Nurikabe was a cute little touch.
It also looks like no one would have completed this set without Instant Grading (based on the first 13 players to complete it at the time of posting this).

Favourites: Hard Matchsticks, Medium Curve Data, Hard Curve Data.

Clearly I spent more time admiring the puzzles than checking my answer keys :D

Can't remember the last time I gasped 'Oh Wow' during the solve of a test.
Thanks Amit for the fun and hard puzzles as always!

amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 3:25 PM (#28265 - in reply to #28260) (#28265) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
prasanna16391 - 2020-05-24 5:12 AM

I always dread this round most in the PR series (mostly something I should work on improving), but this was super fun, and also had a very neat theme. I loved how the thematic sets represented the correct difficulty too for the most part.



Thanks Prasanna, for most of the puzzles I used the grid size to adjust the difficulty. The larger grid sizes also allow to introduce more subtle logic for solving.
Gyuszi13
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 3:28 PM (#28266 - in reply to #28233) (#28266) Top




Posts: 16

Location: Hungary
 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? Double Cross
 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 am quite inexperiences in these type of puzzles but I managed to finish some of the hardest puzzles within the time limit besides easy ones.
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 3:30 PM (#28267 - in reply to #28264) (#28267) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
Thanks Rohan.

Agreed on the instant grading. Till now there is'nt any full score without mistakes.

We tried to adjust the puzzle difficulty for the test. Word Nurikabe was introduced later to lend some balance.

Will post the slightly harder puzzles after the test.
pranavmanu
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 6:14 PM (#28268 - in reply to #28233) (#28268) Top




Posts: 48
2020
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? Word Division
 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


Fantastic test! Even though i did not come close to finishing, the feeling of having attempted a good number of puzzles brings some satisfaction. The logic in the puzzles were very clean and thorough. Favourites were Word Division 2, Mastermind 2 and 3.
Not being able to complete the Word Nurikabe 6 ptr and the 9 ptr Letter scrabble was a disappointment. Look forward to finishing the set later.

Thanks Amit, Great puzzles!
Grizix
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-24 11:05 PM (#28269 - in reply to #28233) (#28269) Top




Posts: 28
20
Location: France
 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? Letter Scrabble
 What was your opinion about the answer key extraction? Answer keys could have been better
 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


amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-25 7:46 AM (#28271 - in reply to #28268) (#28271) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
Thanks Pranav.
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-25 7:50 AM (#28272 - in reply to #28269) (#28272) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
Grizix - 2020-05-24 11:05 PM




Hi Grizix I respect you opinion on the puzzle quality and point distribution.
However I felt the answer keys for any online test cannot get simpler than they were for this round.
Do you have any specific suggestions on improving the answer keys?
kishy72
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-25 4:06 PM (#28273 - in reply to #28233) (#28273) Top


SM 2020 (Math) Author

Posts: 381
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Location: india
 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? Letter Weights
 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


That was a beautiful and high quality set of puzzles. It was frustrating at the end to have completed the Word division (11 pointer) but then having the timer run out before answer key entry.

I lost faaaaaaaaaaaaar too much time on the Letter Scrabble having put HARD in place of HERD and HERD in place of HARD and the ERA in R3C1-3. I checked and double checked to find where my error existed ?!.It took me a despair and agony filled 10 minutes to realize that the words are not connected in the above pattern.So swapped HERD and HARD and put the ERA in between.Lost a lot of time in the above process.Could have hit 70 barring this skirmish.

Very interesting set of puzzles.Would love to finish the rest later. Thanks a lot Amit!
An LMI player
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-25 9:32 PM (#28274 - in reply to #28233) (#28274) 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? Letter Scrabble
 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


An LMI player
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-25 10:09 PM (#28275 - in reply to #28233) (#28275) 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? Word Division
 What was your opinion about the answer key extraction? Answer keys could have been better
 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: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-25 11:39 PM (#28276 - in reply to #28233) (#28276) Top



NEW, HUGE, AND CHALLENGING Author

Posts: 235
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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? Very nice
 Which set of puzzles did you like the most? Curve Data
 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


Overall a very nice test. The theming is excellent (although it's questionable that the curve data has "easy" worth 5 points and "medium" worth 4 points...) and the puzzles themselves were mostly nice.

Matchsticks is a very weird genre, and I'm not sure it's logical. I'm sure most of the penalties by people are in this genre. One good thing about commonly encountered puzzles (Nikoli-style etc) is that you can verify your answer easily; here, verifying your answer to Matchsticks requires you to practically solve the whole thing again. (All optimization puzzles fall in this bucket too.) Not that it's a bad idea to include them, but you need to be really careful with how you do it. I'd say Matchsticks 2 is the most difficult puzzle in the test; Matchsticks 3 is in fact fairly easy (you have enough room to make practically any number you want, so getting a proof is really quick).

Some minor quibbles: Easy as Snake doesn't need the word separation (spaces are irrelevant for the puzzle), but it's fine. For Word Division, with how many native English words are used, I largely intuited the solves by trying to read some reasonable words I can see from the board; people not used to English won't be able to do this.

Double Cross turned out to be particularly enjoyable, compared to my first reaction of "huh, won't this be really trivial?"

Edited by chaotic_iak 2020-05-25 11:42 PM
kiwijam
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-26 6:21 AM (#28277 - in reply to #28251) (#28277) Top




Posts: 157
1002020
Location: New Zealand
.

Edited by kiwijam 2020-05-26 6:22 AM
kiwijam
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-26 6:22 AM (#28278 - in reply to #28251) (#28278) Top




Posts: 157
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Location: New Zealand
rakesh_rai - 2020-05-22 6:56 PM

kiwijam - 2020-05-22 2:20 AM

With Matchsticks, sometimes you can get a lower number by moving less than N matchsticks. I assume this is ok?

For example: N=2, start="70". With 1 move I can get to 18, but if 2 matches have to be in new places then the answer will be higher.

Exactly N matchsticks need to be moved. Solution obtained by moving "Less than N matchsticks" will be invalid. I hope this clarifies.


Well that wasn't true.
The solution to #3 requires moving 4 matchsticks, not 7, and is therefore invalid according to your statement!

I spotted the 'obvious' answer (smallest number using 23 matchsticks) immediately, then spent a long time looking for larger numbers that needed more moves.
At least with instant grading I eventually gave up and put it in just in case I could move on.
chaotic_iak
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-26 8:17 AM (#28279 - in reply to #28278) (#28279) Top



NEW, HUGE, AND CHALLENGING Author

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Location: Indonesia
kiwijam - 2020-05-26 9:22 AM

Well that wasn't true.
The solution to #3 requires moving 4 matchsticks, not 7, and is therefore invalid according to your statement!

I spotted the 'obvious' answer (smallest number using 23 matchsticks) immediately, then spent a long time looking for larger numbers that needed more moves.
At least with instant grading I eventually gave up and put it in just in case I could move on.


There is a solution that gives the same number that moves exactly 7 matchsticks. It leaves a gap between some digits.
harmeet
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-26 8:55 AM (#28280 - in reply to #28233) (#28280) Top


SM 2020 (Converse and Odd Even) Author

Posts: 66
202020
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? Word Nurikabe
 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


Thanks Amit for this enjoyable set! Word puzzles were very nice. In casuals, I did a blunder in mastermind 3 and lost a lot of time. My favorites puzzles were: word nurikabe and curve data.
puzzler05
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-26 6:10 PM (#28283 - in reply to #28233) (#28283) Top




Posts: 5

Location: korea rep
 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? Word Division
 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


tamz29
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 3:25 AM (#28285 - in reply to #28278) (#28285) Top




Posts: 182
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Location: Thailand
You could reach the answer with 7 moves (or any n really) if some moves were transpositions. (Ie. Keep moving the D around until you have 4 moves left). I agree that it's a questionable inclusion.
A possible improvement would be making sure that the solution is reached by the minimum number of moves.
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 8:01 AM (#28286 - in reply to #28273) (#28286) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
kishy72 - 2020-05-25 4:06 PM

Very interesting set of puzzles.Would love to finish the rest later. Thanks a lot Amit!


Thanks Kishore.
I hope you are encouraged to solve more of these puzzle types in the future.
priyambhushan
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 1:56 PM (#28288 - in reply to #28233) (#28288) Top


PR 2020 (Evergreens) Author

Posts: 32
20
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? Word Division
 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


Thank you so much for this wonderful set, Amit!
I was dreading the casual and word round since the week where that I missed the object placement round, and realised that this round will be crucial to getting that 4/6 round base points. I was aiming to score about 30, so I am quite happy with the number of puzzles I could logically solve!

Absolutely loved the Easy, Medium Hard themeing, the cute easter egg answer key on the last puzzle, and the word puzzles were all very logical and enjoyable!

I think I spent a LOT of time trying to figure out puzzle 6 (mastermind), and I don't think I understand i even now :P, but other than that it was smooth sailing for me.
Loved the round!
An LMI player
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 7:26 PM (#28289 - in reply to #28233) (#28289) 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? Word Division
 What was your opinion about the answer key extraction? Answer keys could have been better
 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


amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 11:26 PM (#28290 - in reply to #28276) (#28290) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
chaotic_iak - 2020-05-25 11:39 PM
Overall a very nice test. The theming is excellent (although it's questionable that the curve data has "easy" worth 5 points and "medium" worth 4 points...) and the puzzles themselves were mostly nice.


Thanks Ivan.
It was my first attempt at creating curve data puzzles. I will need a lot more experience before I can have sufficient expertise over adusting the level of difficulty for curve data. In fact both of the original puzzles submitted for EASY and MEDIUM turned out to be non-unique. But thanks to Rakesh's diligent testing I was able to fix it before the test.


Matchsticks is a very weird genre, and I'm not sure it's logical. I'm sure most of the penalties by people are in this genre. One good thing about commonly encountered puzzles (Nikoli-style etc) is that you can verify your answer easily; here, verifying your answer to Matchsticks requires you to practically solve the whole thing again. (All optimization puzzles fall in this bucket too.) Not that it's a bad idea to include them, but you need to be really careful with how you do it. I'd say Matchsticks 2 is the most difficult puzzle in the test; Matchsticks 3 is in fact fairly easy (you have enough room to make practically any number you want, so getting a proof is really quick).

I completely understanding the feeling you describe where the solver is not sure if the answer is correct or not. However within optimization problems too there are several types of problems and I tried to present it as close to a constrain optimization problem as possible.
I think optimization puzzles should also have some representation. We had an entire round of these in WPC 2017.


For Word Division, with how many native English words are used, I largely intuited the solves by trying to read some reasonable words I can see from the board; people not used to English won't be able to do this.


This is a good point that you bring up about the Word Division puzzles. I was thinking about using foreign language words (words for Easy, Medium, Hard in different languages). But that theme was already used in the Mastermind puzzles, so eventually I went with synonyms within English.
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 11:28 PM (#28291 - in reply to #28280) (#28291) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
harmeet - 2020-05-26 8:55 AM

Thanks Amit for this enjoyable set! Word puzzles were very nice.


Thanks Harmeet
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 11:34 PM (#28292 - in reply to #28285) (#28292) Top



PR 2020 (Casual and Word) Author

Posts: 339
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Location: India
tamz29 - 2020-05-27 3:25 AM

You could reach the answer with 7 moves (or any n really) if some moves were transpositions. (Ie. Keep moving the D around until you have 4 moves left). I agree that it's a questionable inclusion.
A possible improvement would be making sure that the solution is reached by the minimum number of moves.


After reading the discussion regarding the Matchsticks puzzle I think I missed a couple of aspects during the test.
I think the rule that each matchstick can be moved exactly once needs to be specified explicitly. Otherwise with transpositions you are right that the target can be achieved in any number of moves.
I had a specific solution in mind which like Ivan pointed out can be achieved in exactly seven moves.

In hindsight there is also room for improvement of the answer key which should possibly be asking for information about which matchsticks are being moved and to which location.

Without this kind of answer key and the explicit rule to restrict transposition I agree with your recommendation about asking for a solution which is reached by the minimum number of moves.
amitsowani
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-27 11:37 PM (#28293 - in reply to #28288) (#28293) Top



PR 2020 (Casual and Word) Author

Posts: 339
10010010020
Location: India
priyambhushan - 2020-05-27 1:56 PM

Thank you so much for this wonderful set, Amit!


Thanks Priyam.
ABcDexter
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-28 1:15 AM (#28294 - in reply to #28233) (#28294) Top




Posts: 17

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? Word Division
 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


I really enjoyed the word puzzles, those were the fun part of the contest. Also, the casual puzzles were fascinating because time taken to solve them was non-linear :D
Administrator
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-28 9:06 AM (#28295 - in reply to #28294) (#28295) Top


2000500100100100202020
Location: India
Thanks to the 206 participants from 37 countries. Congratulations to Freddie Hand, Jeffrey Bardon and Endo Ken for taking the top 3 spots. Also congratulations to Michael Ley and James McGowan for completing the test error-free (without any submission errors). Choi Yong Seok (South Korea) was the first to take the test while Daniel Victor (India) was the last person to start the test. The median score of the test was 50.7.

Top results for countries with 10+ participants:

India (33): Prasanna Seshadri, Rohan Rao and Priyam Bhushan
Japan (23): Ryotaro Chiba, Taigo Ando, Kosei Yoshimori (ranks 2-4)
USA (20): Walker Anderson, Jenna Rivet and Todd Geldon (ranks 2-4)
France (11): Denis Auroux, Anne Limoges and Philippe Meyer
Poland (10): Tomasz Skalski, ralf09, Lukasz Kalinowski

Thanks Amit Sowani for the puzzles!

Participants may share feedback on the results page and rate the puzzles on the contest page.

Rohan Rao (18), Pinijpong (17), Yunguowoo (13) and Ashish Ghogre (13) led another leader-board in this test.
Administrator
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-28 4:33 PM (#28296 - in reply to #28233) (#28296) Top


2000500100100100202020
Location: India
The Solution Booklet is now available here.
3strikerz
Subject: Re: Casual and Word - 22nd - 27th May 2020 - Puzzle Ramayan & IPC Qualifier 2020 @ 2020-05-29 5:50 PM (#28298 - in reply to #28233) (#28298) Top




Posts: 6

Location: South Korea
 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? Word Division
 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


Don't know about matchsticks - they kinda seemed like guesswork for me. Loved the word puzzles though.