Shading and Loops - 20th - 25th Mar 2020 - Puzzle Ramayan & IPC Qualifier 2020
@ 2020-03-15 5:53 PM (#27732) (#27732) Top

Administrator



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Administrator posted @ 2020-03-15 5:53 PM




Link for rules and other details about Puzzle Ramayan: http://logicmastersindia.com/PR/2020pr.asp
Instructions for Shading and Loops - https://logicmastersindia.com/PR/202003/


@ 2020-03-15 7:39 PM (#27733 - in reply to #27732) (#27733) Top

Administrator



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Administrator posted @ 2020-03-15 7:39 PM

Instruction Booklet


The Instruction Booklet is now available here: http://logicmastersindia.com/PR/202003/

@ 2020-03-16 12:42 PM (#27735 - in reply to #27732) (#27735) Top

ghirsch



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ghirsch posted @ 2020-03-16 12:42 PM

Does the Ripple Loop example have two solutions (see attached)? Or am I misunderstanding the rules?



(Screen Shot 2020-03-16 at 12.09.50 AM.png)



Attachments
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Attachments Screen Shot 2020-03-16 at 12.09.50 AM.png (95KB - 0 downloads)
@ 2020-03-16 1:22 PM (#27736 - in reply to #27732) (#27736) Top

Feadoor



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Country : United Kingdom

Feadoor posted @ 2020-03-16 1:22 PM

In your proposed solution, the loop travels straight through both R3C1 and R3C2, which is against the rules.
@ 2020-03-17 1:25 AM (#27737 - in reply to #27735) (#27737) Top

swaroop2011




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swaroop2011 posted @ 2020-03-17 1:25 AM

ghirsch - 2020-03-16 12:42 PM

Does the Ripple Loop example have two solutions (see attached)? Or am I misunderstanding the rules?


Just reiterating what Feadoor already mentioned.

For every pair of adjacent circles, if the loop passes through one of them as straight, it must turn in another.
In your solution, R3C1 and R3C2 are adjacent circles and the loop is going straight in both of them, which is against the rules.
@ 2020-03-17 10:43 AM (#27738 - in reply to #27732) (#27738) Top

ghirsch



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ghirsch posted @ 2020-03-17 10:43 AM

Oh, I see. My misunderstanding was the phrase "edge-adjacent", which I took to mean that two circles were adjacent on an edge of the path (e.g. in the example R1C1 and R3C1 share an edge of the path, and no other circles are between them).

Maybe change the wording in the instructions to simply "For any two adjacent circles, the loop must..."?

Edited by ghirsch 2020-03-17 10:44 AM
@ 2020-03-17 1:54 PM (#27739 - in reply to #27732) (#27739) Top

Administrator



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Administrator posted @ 2020-03-17 1:54 PM

(Updated) Instruction Booklet


The updated Instruction Booklet (March 17 1:50 PM IST) is now available here: http://logicmastersindia.com/PR/202003/

Change in the new version:
(1) Rules for Ripple Loop have been re-worded.

@ 2020-03-19 5:24 PM (#27740 - in reply to #27732) (#27740) Top

swaroop2011




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swaroop2011 posted @ 2020-03-19 5:24 PM

Best of Luck to Everyone.
I hope you Enjoy the Test.
Stay Safe. Stay Healthy.
@ 2020-03-19 11:07 PM (#27741 - in reply to #27732) (#27741) Top

Administrator



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Country : India

Administrator posted @ 2020-03-19 11:07 PM

Puzzle Booklet


The password protected Puzzle Booklet is now available here: http://logicmastersindia.com/PR/202003/

@ 2020-03-20 9:53 AM (#27742 - in reply to #27732) (#27742) Top

ghirsch



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ghirsch posted @ 2020-03-20 9:53 AM

 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? Trio Cut
 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


Great contest! The puzzles were really nice, and well balanced across the various types!
@ 2020-03-20 11:28 AM (#27743 - in reply to #27732) (#27743) Top

vopani



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vopani posted @ 2020-03-20 11:28 AM

 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? Transparent Yajilin
 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 to choose favourite puzzles. All of them were fantastic and a great PR set.

This will go down as one of the best across years.

Thanks a lot Swaroop!
@ 2020-03-20 8:14 PM (#27744 - in reply to #27732) (#27744) Top

Puzzle_Maestro



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Puzzle_Maestro posted @ 2020-03-20 8:14 PM

 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? Border 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? Many puzzles were worth too much or too little
 What was your opinion of the booklet formatting and printing? Just right


@ 2020-03-20 8:17 PM (#27745 - in reply to #27732) (#27745) Top

Puzzle_Maestro



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Puzzle_Maestro posted @ 2020-03-20 8:17 PM

When you have people finishing the test in 27 minutes, it's probably too easy! Despite this, I thought the puzzles were very nice and fun to solve, so overall an excellent test.
@ 2020-03-20 10:10 PM (#27747 - in reply to #27732) (#27747) Top

An LMI player



An LMI player posted @ 2020-03-20 10:10 PM

 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? Ripple Loop
 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


@ 2020-03-20 10:24 PM (#27748 - in reply to #27732) (#27748) Top

anurag



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anurag posted @ 2020-03-20 10:24 PM

Thanks for an easy-raised-to-the-power-of-2 test. The puzzle quality was very decent. I thought the 7-pointer Trio cut and 12-pointeer Nurikabe were overrated though. On the other hand, I struggled 25 minutes to break the tricky loop closure in the centre-left center in the 10-pointer RL!

Edited by anurag 2020-03-20 10:24 PM
@ 2020-03-20 10:36 PM (#27749 - in reply to #27732) (#27749) Top

anurag



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anurag posted @ 2020-03-20 10:36 PM

 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? Myopia
 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


@ 2020-03-21 2:50 AM (#27751 - in reply to #27732) (#27751) Top

priyambhushan



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Country : India

priyambhushan posted @ 2020-03-21 2:50 AM

 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? Ripple Loop
 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 puzzle set, although I found it quite hard. That, however, is probably because I am weak at some of these shading variants, but I enjoyed it!

Thanks, Swaroop!
And thanks for dedicating some of the puzzles to Shaheer :) wonderful gesture...
@ 2020-03-21 3:18 AM (#27753 - in reply to #27732) (#27753) Top

bob



Posts: 59
2020
Country : United States

bob posted @ 2020-03-21 3:18 AM

 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? Myopia
 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


Very hard for me as usual but i am just an average solver. Most were fun enough without the timer, except the ripple loop puzzles. I found even the 2 pointer to be impossible. I solved it several times and even downloaded the instructions/examples again during the test and do not understand where i am wrong. My solution is 320212
@ 2020-03-21 5:38 AM (#27754 - in reply to #27742) (#27754) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 5:38 AM

ghirsch - 2020-03-20 9:53 AM

Great contest! The puzzles were really nice, and well balanced across the various types!


Thank you. I am glad you enjoyed.
@ 2020-03-21 5:39 AM (#27755 - in reply to #27743) (#27755) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 5:39 AM

vopani - 2020-03-20 11:28 AM

Too hard to choose favourite puzzles. All of them were fantastic and a great PR set.

This will go down as one of the best across years.

Thanks a lot Swaroop!


Thanks a lot, Rohan.
@ 2020-03-21 5:41 AM (#27756 - in reply to #27745) (#27756) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 5:41 AM

Puzzle_Maestro - 2020-03-20 8:17 PM

When you have people finishing the test in 27 minutes, it's probably too easy! Despite this, I thought the puzzles were very nice and fun to solve, so overall an excellent test.


Thank you. The aim is to encourage more newcomers and so the difficulty was set towards easier with some challenging stuff for top solvers. I am glad you had fun.
@ 2020-03-21 5:44 AM (#27757 - in reply to #27748) (#27757) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 5:44 AM

anurag - 2020-03-20 10:24 PM

Thanks for an easy-raised-to-the-power-of-2 test. The puzzle quality was very decent. I thought the 7-pointer Trio cut and 12-pointeer Nurikabe were overrated though. On the other hand, I struggled 25 minutes to break the tricky loop closure in the centre-left center in the 10-pointer RL!


Thank you for the feedback. Sometimes the points can be varying based on the experience, as some of them find shading and loop puzzles easy while some find it hard, so there might be some minor variation in the Points to Difficulty experience. But I hope overall it was as close to its possible. Ripple Loop indeed was challenging.
@ 2020-03-21 5:45 AM (#27758 - in reply to #27751) (#27758) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 5:45 AM

priyambhushan - 2020-03-21 2:50 AM

Lovely puzzle set, although I found it quite hard. That, however, is probably because I am weak at some of these shading variants, but I enjoyed it!

Thanks, Swaroop!
And thanks for dedicating some of the puzzles to Shaheer :) wonderful gesture...


Thanks Priyam. I am confident you will master it soon.
@ 2020-03-21 5:51 AM (#27759 - in reply to #27753) (#27759) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 5:51 AM

bob - 2020-03-21 3:18 AM

Very hard for me as usual but i am just an average solver. Most were fun enough without the timer, except the ripple loop puzzles. I found even the 2 pointer to be impossible. I solved it several times and even downloaded the instructions/examples again during the test and do not understand where i am wrong. My solution is 320212


Thank's for your feedback. We would be happy to assist you if you need help in solving certain puzzles. You can post here, where you are stuck, and we can guide you through the next steps.
I can only inform you that, all puzzles are logically approachable.
@ 2020-03-21 7:17 AM (#27760 - in reply to #27732) (#27760) Top

Timjamiller



Posts: 40
2020
Country : United States

Timjamiller posted @ 2020-03-21 7:17 AM

This is the first set that I was able to complete in time while live.

So I'm excited about that, even if the test seems to have been on the easier side.

I definitely needed to reread the instructions a couple of times in order to find the solutions, especially for Ripple Loop. But overall I'm pleased with my result. Hooray!
@ 2020-03-21 2:13 PM (#27761 - in reply to #27732) (#27761) Top

An LMI player



An LMI player posted @ 2020-03-21 2:13 PM

 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? Transparent Yajilin
 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


@ 2020-03-21 6:42 PM (#27762 - in reply to #27732) (#27762) Top

peluri



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peluri posted @ 2020-03-21 6:42 PM

 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? Myopia
 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


@ 2020-03-21 6:58 PM (#27763 - in reply to #27759) (#27763) Top

bob



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2020
Country : United States

bob posted @ 2020-03-21 6:58 PM

Let a = corner with loop arms going down and to the right, b = down and to the left, c = up and to the left, d = up and to the right, - = horizontal, l = vertical, . = empty.
My solution row by row is ..a--b, a-cabl, l..lll, la-cll, ll.acl, dc.d-c
This this leads to the code 320212 which is incorrect. I presume I misinterpreted the rules somewhere but I've never had so much difficulty with a 2-point puzzle.

Thanks for your time and for especially for providing something interesting to do during these crazy times. Please be careful. -bob
@ 2020-03-21 7:55 PM (#27764 - in reply to #27760) (#27764) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 7:55 PM

Timjamiller - 2020-03-21 7:17 AM

This is the first set that I was able to complete in time while live.

So I'm excited about that, even if the test seems to have been on the easier side.

I definitely needed to reread the instructions a couple of times in order to find the solutions, especially for Ripple Loop. But overall I'm pleased with my result. Hooray!


Well Done. Indeed that was the intention, for many people to complete the test. I am glad you enjoyed an are happy.
@ 2020-03-21 7:56 PM (#27765 - in reply to #27763) (#27765) Top

swaroop2011




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swaroop2011 posted @ 2020-03-21 7:56 PM

bob - 2020-03-21 6:58 PM

Let a = corner with loop arms going down and to the right, b = down and to the left, c = up and to the left, d = up and to the right, - = horizontal, l = vertical, . = empty.
My solution row by row is ..a--b, a-cabl, l..lll, la-cll, ll.acl, dc.d-c
This this leads to the code 320212 which is incorrect. I presume I misinterpreted the rules somewhere but I've never had so much difficulty with a 2-point puzzle.

Thanks for your time and for especially for providing something interesting to do during these crazy times. Please be careful. -bob


May I know, which 2 point puzzle you are mentioning here? There are many puzzles. (Myopia, RL, Transparent Yajilin?)
@ 2020-03-21 8:21 PM (#27766 - in reply to #27763) (#27766) Top

Timjamiller



Posts: 40
2020
Country : United States

Timjamiller posted @ 2020-03-21 8:21 PM

Hey Bob. One misinterpretation you're having is that you're allowing empty spaces to occur. The puzzle instructions say that the loop must visit every cell.

The rule I was having trouble with was the horizontal/vertical adjacency stuff...mostly because I overlooked that in my first readthrough. I was originally thinking that it was path adjacent (like ghirsh) and not cell-adjacent.
@ 2020-03-21 8:24 PM (#27767 - in reply to #27763) (#27767) Top

Puzzle_Maestro



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Country : United Kingdom

Puzzle_Maestro posted @ 2020-03-21 8:24 PM

The instructions say 'Draw a closed loop that connects the centres of ALL cells horizontally or vertically', so your solution is wrong, namely because there are empty cells. Details like these are very important!
@ 2020-03-22 12:40 AM (#27768 - in reply to #27732) (#27768) Top

WA1729



Posts: 49
2020
Country : United States

WA1729 posted @ 2020-03-22 12:40 AM

 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? Transparent Yajilin
 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


Very nice puzzles! These were all well written. I like Transparent Yajilin a lot and hope it shows up more often.

Favorites:

2 Nurikabe
11 Border Nurikabe
14 Yajilin
16 Ripple Loop
22 Transparent Yajilin
@ 2020-03-22 1:05 AM (#27769 - in reply to #27732) (#27769) Top

Joo M.Y



Posts: 67
202020
Country : South Korea

Joo M.Y posted @ 2020-03-22 1:05 AM

 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? Ripple Loop
 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


@ 2020-03-22 2:30 AM (#27770 - in reply to #27732) (#27770) Top

Panni



Posts: 9

Country : Hungary

Panni posted @ 2020-03-22 2:30 AM

 What was your opinion of the distribution of easy/hard puzzles? Too many easy puzzles
 What did you think about the puzzle quality of the test? Fairly Nice
 Which set of puzzles did you like the most? Border 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? Many puzzles were worth too much or too little
 What was your opinion of the booklet formatting and printing? Just right


@ 2020-03-22 4:11 AM (#27771 - in reply to #27768) (#27771) Top

swaroop2011




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swaroop2011 posted @ 2020-03-22 4:11 AM

WA1729 - 2020-03-22 12:40 AM

Very nice puzzles! These were all well written. I like Transparent Yajilin a lot and hope it shows up more often.

Favorites:

2 Nurikabe
11 Border Nurikabe
14 Yajilin
16 Ripple Loop
22 Transparent Yajilin


Thank you. I liked it too, a very interesting set of deductions can be possible in this variant. Hopefully, I will create more puzzles of this type in future.
@ 2020-03-22 3:42 PM (#27772 - in reply to #27732) (#27772) Top

JonaS2010



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20
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JonaS2010 posted @ 2020-03-22 3:42 PM

 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
 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


@ 2020-03-22 5:11 PM (#27773 - in reply to #27732) (#27773) Top

TiiT



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10020
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TiiT posted @ 2020-03-22 5:11 PM

 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? Myopia
 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


These were the nicest answer keys I've ever seen in a puzzle competition.
@ 2020-03-22 5:27 PM (#27774 - in reply to #27732) (#27774) Top

Houk13



Posts: 2

Country : The Netherlands

Houk13 posted @ 2020-03-22 5:27 PM

I really enjoyed the puzzles, though I think I don't get the windows rules completely. Can someone explain why this solution to puzzle 5 isn't valid? (x = shaded, _ is white)
___xxxxx
xx_x____
_xxxxxxx
_x______
_xxxxxx_
_x____x_
xxxx_xxx
_____x__
@ 2020-03-22 5:52 PM (#27775 - in reply to #27774) (#27775) Top

rakesh_rai




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rakesh_rai posted @ 2020-03-22 5:52 PM

Houk13:

In your solution, many given shaded cells are showing as unshaded. (Example R2C7). Did you solve the same puzzle?

Otherwise, it seems a valid windows solution.
@ 2020-03-22 6:10 PM (#27776 - in reply to #27775) (#27776) Top

Houk13



Posts: 2

Country : The Netherlands

Houk13 posted @ 2020-03-22 6:10 PM

Thanks, I do seem to have made some mistakes copying the puzzle, that explains a lot
@ 2020-03-22 6:25 PM (#27777 - in reply to #27766) (#27777) Top

bob



Posts: 59
2020
Country : United States

bob posted @ 2020-03-22 6:25 PM

Timjamiller - 2020-03-21 9:21 AM

Hey Bob. One misinterpretation you're having is that you're allowing empty spaces to occur. The puzzle instructions say that the loop must visit every cell.

The rule I was having trouble with was the horizontal/vertical adjacency stuff...mostly because I overlooked that in my first readthrough. I was originally thinking that it was path adjacent (like ghirsh) and not cell-adjacent.


Thanks for finding my mistake. Even when re-reading my eyes gloss right over the little word "all" since I am assuming it is a Masyu variation (which it is not). This makes the larger puzzles possible; thanks again. bob
@ 2020-03-22 6:30 PM (#27778 - in reply to #27732) (#27778) Top

chaotic_iak




Posts: 241
1001002020
Country : Indonesia

chaotic_iak posted @ 2020-03-22 6:30 PM

 What was your opinion of the distribution of easy/hard puzzles? Too many easy puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Transparent Yajilin
 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


@ 2020-03-22 6:41 PM (#27779 - in reply to #27732) (#27779) Top

An LMI player



An LMI player posted @ 2020-03-22 6:41 PM

 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
 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


@ 2020-03-22 7:10 PM (#27780 - in reply to #27732) (#27780) Top

kishy72



Posts: 401
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Country : India

kishy72 posted @ 2020-03-22 7:10 PM

 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? 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


Great puzzles with a good balance of difficulty.

I had a smooth run until I hit Windows (7) and Border Nurikabe (12).These 2 ate up a sizeable chunk of my time.In the end, I was just extremely lucky to submit the 12 pointer at exactly the last second !!

Thanks Swaroop for a nice puzzle set.Favourites are Nurikabe and Myopia.
@ 2020-03-22 8:52 PM (#27781 - in reply to #27773) (#27781) Top

swaroop2011




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swaroop2011 posted @ 2020-03-22 8:52 PM

TiiT - 2020-03-22 5:11 PM

These were the nicest answer keys I've ever seen in a puzzle competition.


Thank you.
@ 2020-03-22 8:52 PM (#27782 - in reply to #27780) (#27782) Top

swaroop2011




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swaroop2011 posted @ 2020-03-22 8:52 PM

kishy72 - 2020-03-22 7:10 PM

Great puzzles with a good balance of difficulty.

I had a smooth run until I hit Windows (7) and Border Nurikabe (12).These 2 ate up a sizeable chunk of my time.In the end, I was just extremely lucky to submit the 12 pointer at exactly the last second !!

Thanks Swaroop for a nice puzzle set.Favourites are Nurikabe and Myopia.


Thank you. Made it just in time. Well done.
@ 2020-03-22 11:46 PM (#27783 - in reply to #27732) (#27783) Top

An LMI player



An LMI player posted @ 2020-03-22 11:46 PM

 What was your opinion of the distribution of easy/hard puzzles? Too many easy puzzles
 What did you think about the puzzle quality of the test? Fairly Nice
 Which set of puzzles did you like the most? Transparent Yajilin
 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


@ 2020-03-23 3:00 AM (#27784 - in reply to #27732) (#27784) Top

An LMI player



An LMI player posted @ 2020-03-23 3:00 AM

 What was your opinion of the distribution of easy/hard puzzles? Too many easy puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Border 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


@ 2020-03-23 4:47 AM (#27785 - in reply to #27732) (#27785) Top

kiwijam



Posts: 172
100202020
Country : New Zealand

kiwijam posted @ 2020-03-23 4:47 AM

 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? Ripple Loop
 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


@ 2020-03-23 1:01 PM (#27786 - in reply to #27732) (#27786) Top

euklid



Posts: 28
20
Country : Austria

euklid posted @ 2020-03-23 1:01 PM

 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? Border 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


@ 2020-03-23 4:35 PM (#27787 - in reply to #27732) (#27787) Top

tamz29



Posts: 217
100100
Country : Thailand

tamz29 posted @ 2020-03-23 4:35 PM

Nice test, Swaroop.
This goes to show that not all easy puzzles are boring.
A lovely introduction to these types where a lot of existing puzzles written could be impossibly difficuly for newer solvers.
Thanks!
@ 2020-03-23 7:00 PM (#27788 - in reply to #27732) (#27788) Top

An LMI player



An LMI player posted @ 2020-03-23 7:00 PM

 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? Border 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


@ 2020-03-23 7:00 PM (#27789 - in reply to #27732) (#27789) Top

An LMI player



An LMI player posted @ 2020-03-23 7:00 PM

 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? Border 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


@ 2020-03-23 8:41 PM (#27790 - in reply to #27732) (#27790) Top

pranavmanu



Posts: 52
2020
Country : India

pranavmanu posted @ 2020-03-23 8:41 PM

 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? Trio Cut
 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


Thanks a lot Swaroop for a near perfect test
Favourites were Ripple Loop set and Trio cut set
Had a lot of time for the Windows but couldnt get them which was quite disappointing
Enjoyed!
@ 2020-03-23 10:21 PM (#27791 - in reply to #27732) (#27791) Top

rob



Posts: 169
100202020
Country : Germany

rob posted @ 2020-03-23 10:21 PM

Thanks Swaroop, this felt like a perfect PR round to me. Easy puzzles (but, honestly, not *that* easy to solve rigorously, so very much appropriate for a contest targetted towards less experienced solvers. Thanks a lot!

I feel lucky for the instant grading, since my one mistake was a real mistake (I'd let some transparent yajilin clues unused by the loop) and not just an input error.
@ 2020-03-24 3:29 AM (#27792 - in reply to #27732) (#27792) Top

Feadoor



Posts: 17

Country : United Kingdom

Feadoor posted @ 2020-03-24 3:29 AM

 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? Yajilin
 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


@ 2020-03-24 8:55 AM (#27793 - in reply to #27787) (#27793) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-24 8:55 AM

tamz29 - 2020-03-23 4:35 PM

Nice test, Swaroop.
This goes to show that not all easy puzzles are boring.
A lovely introduction to these types where a lot of existing puzzles written could be impossibly difficulty for newer solvers.
Thanks!


Thank you very much.
@ 2020-03-24 8:56 AM (#27794 - in reply to #27790) (#27794) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-24 8:56 AM

pranavmanu - 2020-03-23 8:41 PM

Thanks a lot Swaroop for a near perfect test
Favourites were Ripple Loop set and Trio cut set
Had a lot of time for the Windows but couldnt get them which was quite disappointing
Enjoyed!


Thank you. Although completing would have been better, but you did well.
@ 2020-03-24 8:57 AM (#27795 - in reply to #27791) (#27795) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-24 8:57 AM

rob - 2020-03-23 10:21 PM

Thanks Swaroop, this felt like a perfect PR round to me. Easy puzzles (but, honestly, not *that* easy to solve rigorously, so very much appropriate for a contest targetted towards less experienced solvers. Thanks a lot!

I feel lucky for the instant grading, since my one mistake was a real mistake (I'd let some transparent yajilin clues unused by the loop) and not just an input error.


Thank you Rob.
@ 2020-03-24 2:31 PM (#27796 - in reply to #27732) (#27796) Top

harmeet



Posts: 80
20202020
Country : India

harmeet posted @ 2020-03-24 2:31 PM

 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? Windows
 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


@ 2020-03-24 5:10 PM (#27797 - in reply to #27732) (#27797) Top

Helen



Posts: 4

Country : Australia

Helen posted @ 2020-03-24 5:10 PM

 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? Myopia
 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


@ 2020-03-24 8:12 PM (#27799 - in reply to #27732) (#27799) Top

Grizix



Posts: 28
20
Country : France

Grizix posted @ 2020-03-24 8:12 PM

 What was your opinion of the distribution of easy/hard puzzles? Just right
 What did you think about the puzzle quality of the test? Average
 Which set of puzzles did you like the most? Transparent Yajilin
 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


@ 2020-03-24 10:29 PM (#27801 - in reply to #27732) (#27801) Top

Swagatam



Posts: 41
2020
Country : India

Swagatam posted @ 2020-03-24 10:29 PM

 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? Ripple Loop


@ 2020-03-25 12:38 AM (#27802 - in reply to #27732) (#27802) Top

bskbri



Posts: 33
20
Country : Turkey

bskbri posted @ 2020-03-25 12:38 AM

 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? Myopia
 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


@ 2020-03-25 3:44 PM (#27803 - in reply to #27732) (#27803) Top

A Carton Mutant



Posts: 31
20
Country : Turkey

A Carton Mutant posted @ 2020-03-25 3:44 PM

 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? Transparent Yajilin
 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


A very nice set. I was afraid of trio cuts eating my time, happily I got them fast enough. 12-pointer Border Nurikabe was pretty fun but maybe overvalued, after some initial progress I was convinced that the regions will mostly be "outlined" by borders (especially the 9) so it worked quicker than expected. My favorites are the large classic yajilin and the transparents. Thanks for the puzzles! Stay safe everyone.
@ 2020-03-25 8:56 PM (#27805 - in reply to #27732) (#27805) Top

ABcDexter



Posts: 36
20
Country : India

ABcDexter posted @ 2020-03-25 8:56 PM

 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? Border 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


I really loved the puzzles, enjoyed solving Nurikabe and its variant.

Hope that our friend Shaheer rests in peace.
@ 2020-03-26 1:07 AM (#27808 - in reply to #27732) (#27808) Top

mstang




Posts: 72
202020
Country : United States

mstang posted @ 2020-03-26 1:07 AM

 What was your opinion of the distribution of easy/hard puzzles? Too many easy puzzles
 What did you think about the puzzle quality of the test? Very nice
 Which set of puzzles did you like the most? Border 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


Nice, although easier than other PR rounds so far in my opinion. The puzzle quality was great, so I can't complain much!

Edited by mstang 2020-03-26 1:08 AM
@ 2020-03-26 6:57 AM (#27809 - in reply to #27803) (#27809) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-26 6:57 AM

A Carton Mutant - 2020-03-25 3:44 PM

A very nice set. I was afraid of trio cuts eating my time, happily I got them fast enough. 12-pointer Border Nurikabe was pretty fun but maybe overvalued, after some initial progress I was convinced that the regions will mostly be "outlined" by borders (especially the 9) so it worked quicker than expected. My favorites are the large classic yajilin and the transparents. Thanks for the puzzles! Stay safe everyone.


Thank you. I am glad you enjoyed.
@ 2020-03-26 6:58 AM (#27810 - in reply to #27805) (#27810) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-26 6:58 AM

ABcDexter - 2020-03-25 8:56 PM

I really loved the puzzles, enjoyed solving Nurikabe and its variant.

Hope that our friend Shaheer rests in peace.


Thank you.
@ 2020-03-26 6:58 AM (#27811 - in reply to #27808) (#27811) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-26 6:58 AM

mstang - 2020-03-26 1:07 AM

Nice, although easier than other PR rounds so far in my opinion. The puzzle quality was great, so I can't complain much!


Thank you. Indeed the difficulty was set to be on the easier side.
@ 2020-03-26 7:02 AM (#27812 - in reply to #27732) (#27812) Top

swaroop2011




Posts: 636
50010020
Country : India

swaroop2011 posted @ 2020-03-26 7:02 AM

Thank you, everyone, for their wonderful feedback and participation. I will divide my overall thoughts into different categories.

Puzzle Types:
I wanted to have a mix of some standard puzzles and some new variants which are bit unpopular or don’t regularly appear. So I choose Nurikabe, Windows, and Yajilin in the regulars. In the un-popular category, I was first trying to select Every Second Breakpoint and even created two puzzles of it, but was not satisfied with it, as they were coming out very trivial. Then I found Myopia Loop and really liked it, so I went with that. I also liked Transparent Yajilin and Ripple Loop very much.

Puzzle Difficulty and Quality:
Definitely I wanted the test to be on the easier side and accessible to newcomers but maintaining the puzzle quality, so that it doesn’t become trivial solve (Unless you are Ken Endo – Impressive performance). Looking at the performance with 88 solvers finishing the test, I think I achieved that. Based on the feedback from most of them, I feel happy that you enjoyed the test and really liked the puzzles.

Puzzle Points:
I think most of them agreed with the point structure, with very few of them concerning Nurikabe Borders being overrated. I partially agree with you that, this puzzle might feel overrated if you can intuitively see the areas (especially for numbers 8 and 9), then it becomes easy. But for newcomers, who are trying to solve step by step, it will definitely be more challenging. So I hope you understand our methodology of setting the points of this puzzle to be high.

Answer Keys:
I wanted it to be simple and consistent across puzzles. I know it might not be possible to do a similar thing in a lot of tests, but fortunately, it worked out here. I believe no complaints here from anyone.

Winners:
Congratulations to the top 3 Overall: EKBM, WA1729 and fff1015.
Congratulations to the top 3 India: Prasanna, Rohan, Ashish. (Special mention goes to Amit and Kishore too for finishing the test). Good performance by Priyam too, considering new in this field.

Statistics:
1) Most Submitted Puzzle – Windows 4 Points (250 Solvers)
2) Least Submitted Puzzle – Windows 7 Points (143 Solvers)
3) Most correct submissions – Myopia 2 Points (97.34%)
4) Least correct submissions – Windows 4 Points (70.4%)
5) Most Favourite types – Transparent Yajilin, Myopia, Border Nurikabe in order
It’s fascinating that most and least submitted puzzles are of the same type.

Thankings:
Thank you, everyone, again for their feedback. A special thanks to Rakesh, as always doing an extraordinary work behind the scenes, for bringing everything together, for testing, feedback, etc. Thanks to LMI for providing me the opportunity to author the round.

Final Words:
If any of you are stuck in any of the puzzles, please feel free to post in the forum, or message me directly, would be happy to help you. Best of luck for the next PR. Good luck to Priyam for Authoring Debut along with our veteran author Prasanna.
@ 2020-03-26 9:38 AM (#27813 - in reply to #27812) (#27813) Top

rakesh_rai




Posts: 774
500100100202020
Country : India

rakesh_rai posted @ 2020-03-26 9:38 AM

I would re-phrase the first four points in statistics:

1) Most solved puzzles - 1-Nurikabe (216), 2-Nurikabe (209) and 12-Yajilin (209)
2) Least solved puzzles - 7-Windows (120), 17-Ripple Loop (137) and 9-Trio Cut (142)
3) Most accurate submissions - 20-Myopia (97.34%), 7-Trio Cut (96.48%), 12-Yajilin (96.31%)
4) Most error-prone (Least accurate) submissions - 4-Windows (70.4%), 17-Ripple Loop (79.19%), 6-Windows (83.91%)
@ 2020-03-26 10:31 AM (#27814 - in reply to #27732) (#27814) Top

Administrator



20001000100100100202020
Country : India

Administrator posted @ 2020-03-26 10:31 AM

Thanks to the 241 participants from 39 countries. Congratulations to Endo Ken, Walker Anderson and Soji Kubota for finishing the set in under 30 minutes. Ryotaro Chiba (Japan) was the first to start the test while Michael Tang (USA) was the last person to start the test. The median score of the test was 83.8.

Top finishers for countries with 10+ participants:

India(34): Prasanna Seshadri, Rohan Rao and Ashish Kumar
Japan(26): Tomoya Kimura, Hideaki Jo, Kota Morinishi (ranks 3-5)
USA(23): Jeffrey Bardon, Nick Brady and Gabriel Hirsch (Ranks 2-4)
France(15): Anne Limoges, Denis Auroux and Timothy Doyle
Germany(15): Robert Vollmert, Michael Ley and Jonas Gleim
Italy(15): Giuliano Montelucci, Stefano Forcolin and Arianna Domenichelli
Czech Republic (10): Ond?ej Motlí?ek, Jana Vodi?ková, Jakub Ondroušek
UK(10): Freddie Hand, Tom Collyer and Sam Cappleman-Lynes


Thanks Swaroop Guggilam for the puzzles!

Participants may share feedback on the results page and rate the puzzles on the contest page.
@ 2020-03-26 10:37 AM (#27815 - in reply to #27732) (#27815) Top

Administrator



20001000100100100202020
Country : India

Administrator posted @ 2020-03-26 10:37 AM

The Solution Booklet is now available here.
@ 2020-03-28 1:52 AM (#27818 - in reply to #27732) (#27818) Top

oe2



Posts: 4

Country : Germany

oe2 posted @ 2020-03-28 1:52 AM

 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? Myopia
 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


@ 2020-03-29 1:07 AM (#27819 - in reply to #27812) (#27819) Top

priyambhushan



Posts: 34
20
Country : India

priyambhushan posted @ 2020-03-29 1:07 AM

Dear Swaroop,

Thank you so much for the appreciation!

And thanks for mentioning the next round, which is my first ever time authoring.
Looking forward to everyone solving the 4th round of Puzzle Ramayan, which I am co-authoring with Prasanna Seshadri :)

See you all in April!