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Location: India | Dates: 14-20 August
Author - Prasanna Seshadri
IB - Coming on 11th August |
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Location: India | 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.
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Posts: 54
Location: United States | 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? |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1810
Location: India | 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. |
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Posts: 102
Location: United States | 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
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1810
Location: India | 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. |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1810
Location: India | 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. |
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Location: India | Updated Instruction Booklet
The IB (Our Universe) now contains the Points Table.
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Posts: 11
Location: United States | 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) |
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Location: India | 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.
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1810
Location: India | 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! |
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Location: India | 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
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Location: India | Updated Instruction Booklet
Both IBs now contain the fix for Even Sandwich sudoku example.
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Location: India | |
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Shading and Loops (PR 2016/17) Author
Posts: 65
Location: United States | 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 |
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Posts: 12
Location: United States | I really enjoyed this, aside from my inability to count the lengths of loop solutions. :) Great puzzles Prasanna! |
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Location: India | Parallel Universe III Poll
Participants who have completed the test can take this poll.
Your responses will help us in our future contests.
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SM 2020 (Converse and Odd Even) Author
Posts: 87
Location: India | 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! |
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WSPC Organizer
Posts: 542
Location: India | 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.
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Location: India | 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.
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Posts: 1
| 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? |
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Location: India | 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. |
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2021 World Sudoku+Puzzle Convention Organizer
Posts: 1810
Location: India | Thanks Walker, Will, Harmeet and Rajesh :) I'm glad you all enjoyed the contest! |
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Sudoku Day Author
Posts: 103
Location: Serbia | 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. |
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Location: India | 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. |
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WSPC 2017 • Schedule • Participation • Location • WSC • WPC • Contact •Search •Recent
Parallel Universe III - LMI August Monthly PuzzleTest - 14th to 20th August 2020
