Sudoku Champs Practice Test - U10 & U12 has started Discuss
Sudoku Champs Practice Test - U15 & U18 has started Discuss
18 PIC16 posts • Page 1 of 1 • 1
@ 2017-10-04 10:46 PM (#23486) (#23486) Top

prasanna16391



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prasanna16391 posted @ 2017-10-04 10:46 PM

Round 18: PIC

Please post your questions about this round here.
@ 2017-10-08 2:39 PM (#23576 - in reply to #23486) (#23576) Top

forcolin




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forcolin posted @ 2017-10-08 2:39 PM

re: Watch Towers. Is it necessary to fill in the digits or just shading the cells will be enough?
@ 2017-10-08 9:23 PM (#23587 - in reply to #23576) (#23587) Top

prasanna16391



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prasanna16391 posted @ 2017-10-08 9:23 PM

forcolin - 2017-10-08 2:39 PM

re: Watch Towers. Is it necessary to fill in the digits or just shading the cells will be enough?


Shading will be enough.
@ 2017-10-09 9:53 AM (#23598 - in reply to #23486) (#23598) Top

deu



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deu posted @ 2017-10-09 9:53 AM

13,14. Rectangular Numbers
Is it necessary to use each number (1,2,3 and 4) at least once?
I guess the answer is "no" (and the puzzle in PIC compilation file has multiple solutions), but I'd like to make sure.
@ 2017-10-10 1:09 AM (#23623 - in reply to #23598) (#23623) Top

prasanna16391



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prasanna16391 posted @ 2017-10-10 1:09 AM

deu - 2017-10-09 9:53 AM

13,14. Rectangular Numbers
Is it necessary to use each number (1,2,3 and 4) at least once?


No, not necessary.
@ 2017-10-10 12:27 PM (#23645 - in reply to #23623) (#23645) Top

Nikola



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Nikola posted @ 2017-10-10 12:27 PM

About duration of this round, it stands 10:10-11.50 and 80 minutes. Which one is correct?
@ 2017-10-10 2:39 PM (#23652 - in reply to #23645) (#23652) Top

prasanna16391



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prasanna16391 posted @ 2017-10-10 2:39 PM

Nikola - 2017-10-10 12:27 PM

About duration of this round, it stands 10:10-11.50 and 80 minutes. Which one is correct?


80 minutes is correct. Will need to get the schedules fixed. This will be done. For now you may refer here for the reflection of the changes roughly (some spacing considerations are included so it isn't just moving 20 minutes backward everywhere) - http://wspc2017.logicmastersindia.com/?g=Schedule2017
@ 2017-10-11 11:56 PM (#23673 - in reply to #23486) (#23673) Top

rob



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rob posted @ 2017-10-11 11:56 PM

Re Candy Crush, I read the rules to say that the solution can't contain three or more equal letters in a straight line, horizontal or vertical. On the other hand, elimination happens for any group of edge-connected equal letters of size at least three, e.g., for an L-trimino. Is that correct?

Second, why can't the top two rows of the example solution be ADBDBB,AADXDC? Is it because swapping e.g. R1C1 and R1C2 doesn't for a "new" group?
@ 2017-10-12 10:28 AM (#23676 - in reply to #23486) (#23676) Top

tamz29



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tamz29 posted @ 2017-10-12 10:28 AM

(3,4) Shards: Can some of the fragments that make up each shard be connected by a point? (Ie. could there be a shard where, say, three fragments are connected by edges and one "hanging"
off a vertex?)
(21,22) Grapevine: Can the branch enter/leave a grape from a triangular cell?
@ 2017-10-12 11:27 PM (#23678 - in reply to #23673) (#23678) Top

prasanna16391



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prasanna16391 posted @ 2017-10-12 11:27 PM

rob - 2017-10-11 11:56 PM

Re Candy Crush, I read the rules to say that the solution can't contain three or more equal letters in a straight line, horizontal or vertical. On the other hand, elimination happens for any group of edge-connected equal letters of size at least three, e.g., for an L-trimino. Is that correct?

Second, why can't the top two rows of the example solution be ADBDBB,AADXDC? Is it because swapping e.g. R1C1 and R1C2 doesn't for a "new" group?


Not an L- Trimino. The rule says "horizontally or vertically consecutive cells" which means three letters in a line along a row, or a column. This may answer the second part too?
@ 2017-10-12 11:30 PM (#23679 - in reply to #23676) (#23679) Top

prasanna16391



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prasanna16391 posted @ 2017-10-12 11:30 PM

tamz29 - 2017-10-12 10:28 AM

(3,4) Shards: Can some of the fragments that make up each shard be connected by a point? (Ie. could there be a shard where, say, three fragments are connected by edges and one "hanging"
off a vertex?)
(21,22) Grapevine: Can the branch enter/leave a grape from a triangular cell?


3,4: No. For a shard all its fragments are edge-connected.

21,22: No. Vines travel via edges only. Its not explicitly mentioned though. We will make a note of this during Q&A.
@ 2017-10-14 3:24 PM (#23694 - in reply to #23486) (#23694) Top

kishy72



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kishy72 posted @ 2017-10-14 3:24 PM

Puzzle 11,12 : Partiti

The rules state same digits cannot be placed in cells touching diagonally.Can same digits be placed in a single cell ? For instance, can the 2 sum be 1,1 if it doesn't violate the no touch rule with other cells?This case doesn't occur in the example .
@ 2017-10-14 3:30 PM (#23695 - in reply to #23694) (#23695) Top

prasanna16391



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prasanna16391 posted @ 2017-10-14 3:30 PM

kishy72 - 2017-10-14 3:24 PM

Puzzle 11,12 : Partiti

The rules state same digits cannot be placed in cells touching diagonally.Can same digits be placed in a single cell ? For instance, can the 2 sum be 1,1 if it doesn't violate the no touch rule with other cells?This case doesn't occur in the example .


No. We will clarify this at Q&A too.
@ 2017-10-14 6:46 PM (#23696 - in reply to #23486) (#23696) Top

UllaE



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UllaE posted @ 2017-10-14 6:46 PM

15,16 Maximal Archipelago

Having R6C2 as sea and R7C1 + R7C3 as land and everything else as in example solution - would that be viable solution? If not, please explain why.
@ 2017-10-14 10:08 PM (#23697 - in reply to #23696) (#23697) Top

prasanna16391



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prasanna16391 posted @ 2017-10-14 10:08 PM

UllaE - 2017-10-14 6:46 PM

15,16 Maximal Archipelago

Having R6C2 as sea and R7C1 + R7C3 as land and everything else as in example solution - would that be viable solution? If not, please explain why.


It wouldn't because then there is no case within a and b where the given Sea cell in R4C4 has to be a Sea cell.
@ 2017-10-14 10:16 PM (#23698 - in reply to #23697) (#23698) Top

UllaE



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UllaE posted @ 2017-10-14 10:16 PM

Thanks, didn't notice that :-)
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