Name of Test: Lockdown Sudoku Test

Author: R Kumaresan

Dates: 28th August to 2nd September 2020

IB: Coming on or before 24th August

Silly bit of ridiculousness--there are some unclosed parentheses on page 2, in the scoring table.

For Four in One, will each condition be satisfied by exactly one of the variant rules? In particular, it seems that Renban/Meandering *could* match, and Palindrome/Equal *will* match if the lines are even in length.

For Three's a Crowd, does "all of the wrong clues are different" mean that each digit will be represented by an incorrect clue exactly once for each side? (Four incorrect 1's, four incorrect 2's, etc. and one for each side of the puzzle?)

Thank you!

Thanks for your query.
In 4 in one sudoku each line will satisfy exactly one varient.
In three is a crowd sudoku wrong clues are different on each side.
Each side wrong clues will be 1 to 9 once.

These have been "closed" now. Thanks for pointing this out. You can download the latest IB.

Adding to Kumaresan's reply,

There will be a unique way to assign each variant to a different line. In particular, a renban will always satisfy meandering diagonal rules. In the IB example, both the lines at the top satisfy "equal parity" rules. But there is only one line which satisfies palindrome rules. Similarly both the bottom lines satisfy "meandering diagonal" rules but there is only one which satisfies renban rules. Hope this makes it clearer.

What you said is correct, assuming all clues are given.

The test has started.

Can you share solver usage instructions as well. For whole 90 minutes I could not figure out how to clear a specific pencil mark. For eg if I have 123 pencil marked in a cell and I want to clear 1. Then how can I do that?

..... A really tough set, but enjoyed thoroughly! I found Parity skyscrapers and X-Anti-windoku as most difficult. And felt arrow-thermo 50:50 was the best per construction. Thank you Kumare-san!

Edited by harmeet 2020-09-01 11:45 AM

what is the password for opening sudoku booklet?

As mentioned in the first page of Instruction Booklet, you should go through this thread to get familiar with the basics:

https://logicmastersindia.com/forum/forums/thread-view.asp?tid=381&s...

- You need to go to the contest page.
- Download the Instructions Booklet and Sudoku Booklet.
- Go through the Instructions Booklet and get familiar with sudoku types.
- Once you are ready, click on "Start Lockdown Sudoku Test" button on the test page.
- You will get the password on the screen.
- Copy the password and use it to open the Sudoku booklet pdf.
- Print the booklet, solve and enter the answer key(s).
- Solve and submit as many as possible till the timer on the screen is running (It will run for 90 minutes).
- Check the score on the Results link.
- You can also solve online (There is a link at the top of the contest page).

In online solving, you can use pencilmarks and keep solving. Once the cells in the answer keys are filled, you can submit.

You can also find details here: http://logicmastersindia.com/forum/forums/thread-view.asp?start=1&t...

Hi all ! With the lockdown contest over now, we have published a video on X-Antiwindoku from the contest on the channel "Unshackling Sudokus and Puzzles". This sudoku had the least number of submissions and caused difficulties to a lot of solvers. Do check it out if you are interested to know how it could have been aced and also how to solve it like a pro if you ever see one of the same variant again in the future :)

https://youtu.be/06c1Ah7mIP0

Thanks to all 248 participants. Congratulations to the Top three - Prasanna Seshadri, Jakub Ondrousek and Tantan Dai.

Among participants from India, in addition to Prasanna, Congratulations to James Peter, Kishore Kumar, Manjiri Thakur and Jaipal Reddy for Top 20 performances.

Thanks R Kumaresan for this hard test.

I do not see the test page. I see only the two file links and the test results.
Nor is the file unlocked. How to get password? (I am logged in)