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Parallel Universe III - LMI August Monthly PuzzleTest - 14th to 20th August 202026 posts • Page 1 of 2 • 1 2
@ 2020-08-11 8:51 AM (#28455) (#28455) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-11 8:51 AM

Dates: 14-20 August
Author - Prasanna Seshadri
IB - Coming on 11th August
@ 2020-08-11 3:24 PM (#28456 - in reply to #28455) (#28456) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-11 3:24 PM

Instruction Booklets


The IBs are available now at the contest page: http://logicmastersindia.com/2020/08P/

The test starts on 14th August at 1600 hours IST and ends at 2359 hours IST on 19th August.

Points table shall be updated before the contest starts.

@ 2020-08-12 1:57 AM (#28457 - in reply to #28455) (#28457) Top

Timjamiller



Posts: 53
2020
Country : United States

Timjamiller posted @ 2020-08-12 1:57 AM

For puzzle 18 (Clock Faces Loop The Loop), it seems that the direction of the path is left to be determined by the solver, yes?
@ 2020-08-12 4:08 AM (#28458 - in reply to #28457) (#28458) Top

prasanna16391



Posts: 1762
1000500100100202020
Country : India

prasanna16391 posted @ 2020-08-12 4:08 AM

That is correct, and I had even meant to add that in there on the recommendation of one of the test solvers and forgot to. It'll be added in the version with the points distribution.
@ 2020-08-12 11:33 AM (#28459 - in reply to #28455) (#28459) Top

ghirsch



Posts: 102
100
Country : United States

ghirsch posted @ 2020-08-12 11:33 AM

Does the Even Sandwich Sudoku in the IB have a solution? Maybe I'm missing something, but it seems like the odd numbers can be placed in columns 5 and 6, which then results in a contradiction in row 3 about where the 5 can/must be placed (no 1 outside clue -> R3C4 must be odd -> must be 5, but then the 5 outside clue can't be satisfied).

EDIT: Oh, I just realized the solutions are at the end. Am I misunderstanding the rules and the solution is valid, or is the puzzle incorrect?

Edited by ghirsch 2020-08-12 11:36 AM
@ 2020-08-12 3:00 PM (#28460 - in reply to #28455) (#28460) Top

prasanna16391



Posts: 1762
1000500100100202020
Country : India

prasanna16391 posted @ 2020-08-12 3:00 PM

Ouch, you are right. Sorry about this, it is an error. It'll be fixed soon. The clue in R3 should be a 5 1.
@ 2020-08-12 11:18 PM (#28461 - in reply to #28459) (#28461) Top

prasanna16391



Posts: 1762
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Country : India

prasanna16391 posted @ 2020-08-12 11:18 PM

ghirsch - 2020-08-12 11:33 AM

Does the Even Sandwich Sudoku in the IB have a solution? Maybe I'm missing something, but it seems like the odd numbers can be placed in columns 5 and 6, which then results in a contradiction in row 3 about where the 5 can/must be placed (no 1 outside clue -> R3C4 must be odd -> must be 5, but then the 5 outside clue can't be satisfied).

EDIT: Oh, I just realized the solutions are at the end. Am I misunderstanding the rules and the solution is valid, or is the puzzle incorrect?


This is fixed now.

Timjamiller - 2020-08-12 1:57 AM

For puzzle 18 (Clock Faces Loop The Loop), it seems that the direction of the path is left to be determined by the solver, yes?


This is added to the rules now.
@ 2020-08-14 5:49 AM (#28462 - in reply to #28455) (#28462) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-14 5:49 AM

Updated Instruction Booklet


The IB (Our Universe) now contains the Points Table.

@ 2020-08-14 9:38 AM (#28463 - in reply to #28455) (#28463) Top

randomperson1729



Posts: 10

Country : United States

randomperson1729 posted @ 2020-08-14 9:38 AM

Is the even sandwich sudoku in the IB supposed to have multiple solutions or did I do something wrong? Because unless I'm really missing something, there seems to be multiple possible ways to place the even digits on the grid in that puzzle, and not enough information to lead to a unique solution. (for example, I got a valid solution that would yield a solution code of 453621, 235641)
@ 2020-08-14 11:03 AM (#28464 - in reply to #28455) (#28464) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-14 11:03 AM

Regarding solving using Penpa


If you are solving using the Penpa links please do not use the resize image function as there is a bug that can remove elements of the image while doing so.

@ 2020-08-14 12:00 PM (#28465 - in reply to #28463) (#28465) Top

prasanna16391



Posts: 1762
1000500100100202020
Country : India

prasanna16391 posted @ 2020-08-14 12:00 PM

randomperson1729 - 2020-08-14 9:38 AM

Is the even sandwich sudoku in the IB supposed to have multiple solutions or did I do something wrong? Because unless I'm really missing something, there seems to be multiple possible ways to place the even digits on the grid in that puzzle, and not enough information to lead to a unique solution. (for example, I got a valid solution that would yield a solution code of 453621, 235641)


Yes. It looks like I have forgotten two givens in the grid looking at my notebook. Without those it is impossible to resolve 4 and 6 in any way in the grid. A fix will be added shortly. Sorry for the error, thanks for pointing it out!
@ 2020-08-14 1:31 PM (#28466 - in reply to #28465) (#28466) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-14 1:31 PM

Regarding solving using Penpa


If you are solving using the Penpa links please do not use the resize image function as there is a bug that can remove elements of the image while doing so.

THIS BUG IS FIXED

@ 2020-08-14 2:28 PM (#28467 - in reply to #28466) (#28467) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-14 2:28 PM

Updated Instruction Booklet


Both IBs now contain the fix for Even Sandwich sudoku example.

@ 2020-08-14 5:48 PM (#28468 - in reply to #28455) (#28468) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-14 5:48 PM

Puzzle Booklet


The password protected Puzzle Booklet is available now at the contest page: http://logicmastersindia.com/2020/08P/

@ 2020-08-15 2:10 AM (#28469 - in reply to #28455) (#28469) Top

WA1729




Posts: 60
202020
Country : United States

WA1729 posted @ 2020-08-15 2:10 AM

Really fun, fast-paced test! I liked how the puzzles were divided into sets of sudoku variant / classic / classic variant. Nice puzzles all around!

Favorites:
09 Non-Consecutive Nanro
12 Odd-Even Fillomino
15 Skyscraper Snake
21 Diagonal Kurotto
30 Irregular Doppelblock Yajilin
@ 2020-08-16 9:56 PM (#28470 - in reply to #28455) (#28470) Top

willwc



Posts: 12

Country : United States

willwc posted @ 2020-08-16 9:56 PM

I really enjoyed this, aside from my inability to count the lengths of loop solutions. :) Great puzzles Prasanna!
@ 2020-08-17 2:14 PM (#28472 - in reply to #28455) (#28472) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-17 2:14 PM

Parallel Universe III Poll


Participants who have completed the test can take this poll.
Your responses will help us in our future contests.

@ 2020-08-18 4:49 PM (#28473 - in reply to #28455) (#28473) Top

harmeet



Posts: 85
20202020
Country : India

harmeet posted @ 2020-08-18 4:49 PM

Thank you Prasanna for a very engaging set both from this world and the other! My favorites were Irregular Doppelblock, Non-Consecutive Nanro, and Even sandwich Sudoku.
It a great set keeping in mind there is something for everyone, at the same time retaining high quality!
@ 2020-08-19 10:59 AM (#28474 - in reply to #28455) (#28474) Top

rajeshk




Posts: 542
5002020
Country : India

rajeshk posted @ 2020-08-19 10:59 AM

Thanks, Prasanna for this great test. Most of the puzzles were solvable logically. It contained all the difficulty levels from very easy to very hard puzzles. Thanks once again for this wonderful test.
@ 2020-08-19 12:38 PM (#28475 - in reply to #28455) (#28475) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-19 12:38 PM

Contest extension


The contest is extended by 30 hours - Participants can start the test till 05:59 AM IST (00:29 AM GMT) on 21st August.

@ 2020-08-19 1:10 PM (#28476 - in reply to #28455) (#28476) Top

DEETIPRIYA



Posts: 1

DEETIPRIYA posted @ 2020-08-19 1:10 PM

I am new in this forum. I was trying to open PUIII Pb but it is password protected. How do i know what is the pwrd?
@ 2020-08-19 1:33 PM (#28477 - in reply to #28476) (#28477) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-19 1:33 PM

DEETIPRIYA - 2020-08-19 1:10 PM

I am new in this forum. I was trying to open PUIII Pb but it is password protected. How do i know what is the pwrd?


It is suggested to read the FAQ - https://logicmastersindia.com/forum/forums/thread-view.asp?tid=381

But short answer is, when you click the start button, a timer will start counting down from 90 minutes and you will see the password which you can copy and open the PDF with. After that, you have 90 minutes to solve and submit as much as you can. It is also recommended that you view the Instruction booklet first, understand all the rules and answer key codes, and then start the contest.
@ 2020-08-19 1:35 PM (#28478 - in reply to #28455) (#28478) Top

prasanna16391



Posts: 1762
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Country : India

prasanna16391 posted @ 2020-08-19 1:35 PM

Thanks Walker, Will, Harmeet and Rajesh :) I'm glad you all enjoyed the contest!
@ 2020-08-21 4:41 PM (#28479 - in reply to #28478) (#28479) Top

Nikola



Posts: 103
100
Country : Serbia

Nikola posted @ 2020-08-21 4:41 PM

Thanks Prasanna and LMI team for another enjoyable contest and also for extending the deadline, otherwise I would not have been able to participate.

Looks like I misunderstood the rules of two puzzles which made it very difficult (impossibly) for me to solve. Anyway, nice mixture of sudoku and puzzles from both universes. I wish to see the next part of this saga, maybe with some more valuable sudoku puzzles.
@ 2020-08-22 11:29 AM (#28481 - in reply to #28455) (#28481) Top

Administrator



2000100050020
Country : India

Administrator posted @ 2020-08-22 11:29 AM

Thanks to all 188 participants, especially the participants who were taking part in a Puzzle test for the first time!

Congratulations to the Top three - Endo Ken, Walker Anderson and Freddie Hand - and the other seven participants who finished all 30 puzzles within the time.

Among participants from India, Congratulations to Swaroop Guggilam for the top score and Amit Sowani, Ashish Kumar and Kishore Kumar for positions 2-4 (separated by six points).

Among mini-Sudokus, Irregular Doppelblock proved to be the toughest. Among mini-Puzzzles, Hohle was the toughest by a distance. Among combo puzzles, Palindrome-Hohle proved to be the toughest.

The Solution Booklet is now available here.

Thanks Prasanna Seshadri for this interesting test.
Parallel Universe III - LMI August Monthly PuzzleTest - 14th to 20th August 202026 posts • Page 1 of 2 • 1 2
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