Thread - Shapes and Sizes — LMI January Sudoku Test

Country : India

debmohanty posted @ 2011-12-31 10:04 AM

Richard - 2011-12-30 6:44 PM

As promised earlier, here are the links to the 'Leftover'-puzzles that I published today:

Scattered outside sums
Cylindrical
Chaos windoku
Scattered overlapping

Have fun!

Thanks Richard for the links to extra practice puzzles.
I've a question. In terms of difficulty, how do you rate the 'leftover' puzzles with respect to the actual puzzles in the test?

@ 2011-12-31 11:22 AM (#6327 - in reply to #6326) (#6327) Top

Richard

Posts: 191

Country : The Netherlands

Richard posted @ 2011-12-31 11:22 AM

debmohanty - 2011-12-31 10:04 AM

Thanks Richard for the links to extra practice puzzles.
I've a question. In terms of difficulty, how do you rate the 'leftover' puzzles with respect to the actual puzzles in the test?

Sorry Deb, I forgot to mention that.
All four 'leftover' puzzles are harder than the ones in the real test. That's the reason why I didn't use them in the test.

@ 2011-12-31 2:27 PM (#6328 - in reply to #6327) (#6328) Top

Para

Posts: 315

Country : The Netherlands

Para posted @ 2011-12-31 2:27 PM

Richard - 2011-12-31 11:22 AM

debmohanty - 2011-12-31 10:04 AM

Thanks Richard for the links to extra practice puzzles.
I've a question. In terms of difficulty, how do you rate the 'leftover' puzzles with respect to the actual puzzles in the test?

Sorry Deb, I forgot to mention that.
All four 'leftover' puzzles are harder than the ones in the real test. That's the reason why I didn't use them in the test.

That's too bad. I really liked the difficulty of 3 of the 4. Only the smallest had me stumped, till I remembered it was your puzzle and I figured I should look in one place and the next step was exactly there. Opposed to Fred i´m a big fan of chaos sudokus. Any sudoku that doesn´t have 3 by 3 regions is preferred by me.

@ 2012-01-02 3:03 PM (#6337 - in reply to #6308) (#6337) Top

Country : India

Administrator posted @ 2012-01-02 3:03 PM

We are making a small change to the image of Sudokuro - the clue cells are made more gray. Here is how the new image looks like.

Updated IB uploaded, but this is the only change.

@ 2012-01-02 4:22 PM (#6339 - in reply to #6337) (#6339) Top

Valezius

Posts: 66

Country : Hungary

Valezius posted @ 2012-01-02 4:22 PM

Is it possible the online solving in this test?

@ 2012-01-02 4:27 PM (#6340 - in reply to #6339) (#6340) Top

Country : India

Administrator posted @ 2012-01-02 4:27 PM

Valezius - 2012-01-02 4:22 PM

Is it possible the online solving in this test?

Yes. We'll put all examples online for practicing. May be in next 24 hours.

@ 2012-01-03 11:14 AM (#6347 - in reply to #6308) (#6347) Top

Country : India

Administrator posted @ 2012-01-03 11:14 AM

All examples can now be solved online.

This test has lot of non 9X9 sudokus. So we needed to tweak the flash interface a bit.
Request to online solvers : please report any issues while solving/testing the examples before the test starts. It is unlikely that we'll make any changes after the test starts.

@ 2012-01-04 11:36 AM (#6351 - in reply to #6308) (#6351) Top

TiiT

Posts: 139

Country : Estonia

TiiT posted @ 2012-01-04 11:36 AM

Is it correct, that in Scattered non-consecutive sudoku, 0 and 1 ARE consecutive and 9 and 0 ARE NOT consecutive?

@ 2012-01-04 12:02 PM (#6352 - in reply to #6351) (#6352) Top

Richard

Posts: 191

Country : The Netherlands

Richard posted @ 2012-01-04 12:02 PM

@TiiT: Yes, that is correct.

@ 2012-01-04 6:13 PM (#6353 - in reply to #6308) (#6353) Top

Posts: 668

Country : India

swaroop2011 posted @ 2012-01-04 6:13 PM

hey can anyone help me out with scattered non-consecutive sudoku..
just got a "0" at r9c10..
and also with scattered sudoku with added clues...
in this got few numbers like 1 and 2 at few places but not able to proceed further..

@ 2012-01-04 9:29 PM (#6354 - in reply to #6353) (#6354) Top

Country : India

debmohanty posted @ 2012-01-04 9:29 PM

swaroop2011 - 2012-01-04 6:13 PM
and also with scattered sudoku with added clues...
in this got few numbers like 1 and 2 at few places but not able to proceed further..

Check 13 = 6+7
After that in left grid, R2C2=4
and then R1C1 = 3, R6C4=5
It is really smooth solve, so I guess you are not focusing on all the given sums.

Edit : Wrong steps

Edited by debmohanty 2012-01-05 10:21 AM

@ 2012-01-04 9:52 PM (#6355 - in reply to #6308) (#6355) Top

Posts: 668

Country : India

swaroop2011 posted @ 2012-01-04 9:52 PM

how can left grid r2c2 be 4 ?

because it will make r2c2 = 6 in right grid.
that makes r3c3 = 7 and r2c6 =7 in right grid..
which in turn makes r3c3 = 6 and r2c6 = 6 in left grid. This contradicts that grey cells must contain 1-7 only once

@ 2012-01-04 9:57 PM (#6356 - in reply to #6308) (#6356) Top

Posts: 668

Country : India

swaroop2011 posted @ 2012-01-04 9:57 PM

i think after concentrating on what u said about 13..
the r2c2 should be 5.
then r1c1 = 3 as you said..

and i cant believe that i got the opening of scattered non-consecutive..IT was really very hard to find it out took literally more than 3-4 hours but got it just now..
thanks for the help.

@ 2012-01-04 10:04 PM (#6357 - in reply to #6356) (#6357) Top

Richard

Posts: 191

Country : The Netherlands

Richard posted @ 2012-01-04 10:04 PM

swaroop2011 - 2012-01-04 9:57 PM
and i cant believe that i got the opening of scattered non-consecutive..IT was really very hard to find it out took literally more than 3-4 hours but got it just now..
thanks for the help.

Since there are not much given digits in the grid and they are concentrated in four areas, one of those areas must provide the start.
After the 0 you found in R9C10 the real start of the puzzle can be found in R1C8 + R1C10. What digits can go there?

Since I am the author, I hesitate to give more detailed answers.

Best regards, Richard

@ 2012-01-04 10:26 PM (#6358 - in reply to #6308) (#6358) Top

Posts: 668

Country : India

swaroop2011 posted @ 2012-01-04 10:26 PM

nope
thanks for it
:)

@ 2012-01-05 8:32 PM (#6362 - in reply to #6357) (#6362) Top

figonometry

Posts: 30

Country : Canada

figonometry posted @ 2012-01-05 8:32 PM

After the 0 you found in R9C10 the real start of the puzzle can be found in R1C8 + R1C10.

After several attempts, that zero is the only digit I have as well. However, only now, after reading here, do I realize that the puzzle is non-consecutive. That may have been the source of my problem.

@ 2012-01-06 10:55 PM (#6366 - in reply to #6308) (#6366) Top

Country : India

Administrator posted @ 2012-01-06 10:55 PM

Announcements

1. Password protected pdf is uploaded. It has 9 pages. There is no cover page.
2. Note about Twin chaos sudoku, for online solvers. Although the row and column is marked only on the left grid, points will not be awarded if right side grid has different digits . (It is fine if some cells in right side grid are not filled, but if a cell is not empty, then digits must be same in both grids).
3. As usual, if you are solving online, no need to submit again using paper mode.
4. Paper only link - http://logicmastersindia.com/M201201S/?paper=1

@ 2012-01-07 1:38 PM (#6367 - in reply to #6308) (#6367) Top

Para

Posts: 315

Country : The Netherlands

Para posted @ 2012-01-07 1:38 PM

So yeah, I should really enter answer keys when i finish a puzzle. after not leaving enough time last sudoku test, this time I just totally forget to put in an answer key of the cylindrical, which was one of the first I finished.

@ 2012-01-07 1:41 PM (#6368 - in reply to #6367) (#6368) Top

Country : India

debmohanty posted @ 2012-01-07 1:41 PM

Para - 2012-01-07 1:38 PM

So yeah, I should really enter answer keys when i finish a puzzle. after not leaving enough time last sudoku test, this time I just totally forget to put in an answer key of the cylindrical, which was one of the first I finished.

What I observe over many tests is that, many players submit as soon as they are done with a 'page'. So typically 2 puzzles or so.

@ 2012-01-07 3:30 PM (#6369 - in reply to #6308) (#6369) Top

Posts: 668

Country : India

swaroop2011 posted @ 2012-01-07 3:30 PM

It was nice test..
Just missed to submit an answer. Only 10sec were left..
I loved to solve the low digits sudoku..
i am happy even though with low score because i solved each puzzle without guessing.
Hope this will improve in next test.

@ 2012-01-07 8:06 PM (#6370 - in reply to #6308) (#6370) Top

rob

Posts: 170

Country : Germany

rob posted @ 2012-01-07 8:06 PM

On my Macbook, Preview (version 5.0.3 (504.1)) fails to open the encrypted puzzle booklet. Can anyone else with a Mac confirm this? I've recently reinstalled the OS, so it might be a problem on my end, but I can open the encrypted PDF of this weekend's logic-masters.de contest just fine.

@ 2012-01-07 8:23 PM (#6371 - in reply to #6370) (#6371) Top

Country : India

debmohanty posted @ 2012-01-07 8:23 PM

@rob, check your email please.

ETA : rob confirmed that this pdf file works. So if anyone else with Mac faces problem, use this pdf instead.

Edited by debmohanty 2012-01-07 9:59 PM

@ 2012-01-08 2:27 AM (#6373 - in reply to #6371) (#6373) Top

prasanna16391

Posts: 1782

Country : India

prasanna16391 posted @ 2012-01-08 2:27 AM

Wonderful Sudokus there.

On a personal note, probably not a good idea to solve scattered and toroidal sudokus when you're half asleep and all but unfortunately this is the only time I'll be getting this weekend :| Considering that, I'm quite happy with my score for a type I'm weak at.

Will surely go through the rest of them later.

@ 2012-01-09 3:17 AM (#6381 - in reply to #6370) (#6381) Top

detuned

Posts: 152

Country : United Kingdom

detuned posted @ 2012-01-09 3:17 AM

Mine opened the puzzle book just fine - although my version of preview is 5.5.1 (719.11).

I really enjoyed the set - the low digits type is easily my favourite sudoku variation of recent times. I'd be interested to know whether my assumed "logic" for the overlapping puzzle actually does hold in full generality as well...

@ 2012-01-09 6:32 AM (#6383 - in reply to #6381) (#6383) Top