I have two questions about IB.

5. Fake Treasure
In the example grid, each shaded area also contains each digit exactly once. Is this just a coincidence?

14. Prison Break
If one pentomino contains the same numbers twice (or more), will these numbers appear multiple times in the clue? For example, will the clue corresponding to the pentomino with 11239 (3 is given) be 112 or 12?

One more comment:
In the example of 4. Weighted Killer, clue in R5C2 must be 18, not 21.

Just to make sure.
In 11. Clue the number in the grey cell defines which of the 3 rules below should be applied for the signed cells. Is it correct?
For example in the first 9x3 area the number in the grey cell is 3 which means the 3rd rule (Extra region) should be applied to the circled cells. In the second 9x3 area the number in the grey cell is 5 which means the 5th rule (Arithmetic sequence) should be applied in the grey line. In the third 9x3 area the number in the grey cell is 9 which means the 9th rule (Extra region) should be applied to cells with squares. Is it correct?

It's just a coincidence.

It will be 12 (NOT 112).

For example, 6 and 9 are given in a pentomino and 1 and 4 are listed below.
Then, only known information about 14 is 'there can not be 2,3,5 in the pentomino'.
(1. can't say anything about 6,7,8 and 9
2. 1 and 4 appear at least once
3. don't know how many 1,4 are in there)


I will change the example of 4.

Thanks.

Edited by Kwaka 2012-11-01 9:20 PM

You're right. That's exactly what I mean.

Thanks.

Interesting new variants. One small question below:

10. Twin Murderers
Can digits be repeated in a cage?

Nikola

Oops.

10. Twin Murderers

"No digit is repeated in a cage."

Sorry, I will fix it.


Thanks.

Edited by Kwaka 2012-10-30 4:31 PM

Sudoku number 11 - Clue
Will be the extra rules in competition puzzle same as in the example?
What is an Arithmetic sequence? Does the numbers have to only increase or only decrease? Or is it possible to make sequence like 123234345?

Thanks

11. Clue
Yes. The extra rules in competition puzzle are same as in the example.
Also, an arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.
For instance, the sequence 5, 7, 9, 11, 13, … is an arithmetic progression with common difference of 2. (From Wikipedia)
(123234345 is impossible )

Thanks.

Edited by Kwaka 2012-10-31 8:07 AM

Thanks

Hello. In example 4 (Weighted Killer), r5c2 should be 18 not 21. The answer grid next to it is correct. Please don't tell the fugitives that I have become an informer !

Regards, David

Sorry for mistype.


14. Prison Break

For example, 6 and 9 are given in a pentomino and 1 and 4 are listed below. Then, only known information about 14 is 'there can not be 2,3,5 in the pentomino'.
(1. can't say anything about 6,7,8 and 9
2. 1 and 4 appear at least once
3. don't know how many 1,4 are in there)

Edited by Kwaka 2012-11-01 9:20 PM

I just changed what you said, informer!


Thanks

11. Clue
Example of an arithmetic sequence
1-2-3-4-5-6-7-8-9
2-4-6-8-10-12
4-7-10-13


1-2-3-2-1 NOT arithmetic sequence
2-4-6-4-2-4 NOT arithmetic sequence
1-2-3-2-3-4-3-4-5 NOT arithmetic sequence


ONLY increase or ONLY decrease.

So for the arithmetic sequence, it has to be 123456789 or 987654321?

If a sequence has length 9, then 123456789 or 987654321.

But right now you don't know how long the sequence is.

Also, there is only one line in 9x3 area in the problem 11. Clue in the PB.

Don't worry about that.

There will be no confusion if you see the PB.


Thank you for letting me know about that.

Edited by Kwaka 2012-11-01 9:52 PM

Hi, It seems great idea of the theme but I also have few questions.

1. Puzzle no 9 Little killer with extra region: There are several extra regions shaded grey. If they touch each other and my printer doesn't print these colors differently enough, then I have a problem. Is there anything I can do to avoid it?

2. Puzzle no 10 Twin Murderers: Instructions say that the pattern of numbers entered in the left and the right grid are identical. If patterns are identical, then it doesn't mean that there have to be the same numbers. Let me explain! In the IB, you can easily switch 2-s and 3-s in the first grid and the pattern really is the same as in the other grid. Is there a double solution in IB, or do you mean that the numbers (not pattern) have to be the same in both grids? (I hope my point is clear).

TiiT

Hi. Here are answers.

1. Puzzle no 9 Little Killer with ER
You don't worry about that. They don't touch each other. I'm so sure that you won't meet that color problem.

2. Puzzle no 10 Twin Murderers
Actually I used an instruction of Puzzle no 18 Double Murder of USPC 07. (Country using English as a mother language)
Sorry to you if you confused about that.
I mean that the numbers have to be the same in both grids.


Kwak


Edited by Kwaka 2012-11-02 2:48 PM

Thanks, It's clear now :)

TiiT

Do we have online solving enabled for this test?

Sorry, forgot to post, there won't be any online solving. It is because of the last sudoku "Prison Break".
May be we should explore, if we should enable online solving even in cases where 1 or 2 sudokus are not solvable online.

Edited by Kwaka 2012-11-03 11:12 AM

15 pages of the PB? It is too much, don´t you think?
I believe that two grids per paper are always enough. Also big grids slow the solving, because it is not easy to look at the whole grid with one view.

Anyway I really enjoyed some of the puzzles. Those I have solved in time were very tricky and nice for me. But I spent just 7 minutes until my printer deal with such a huge amount of papers (because it froze I wasn´t able to rewrite the sudokus on paper).

I'm very sorry about that.
I hadn't thought of that problem because I usually print out 2 pages per sheet when I take this kind of test.

Anyway, thanks for enjoying the test.