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20 Puzzle Fusion
   WSC and WPC 2017 -> WPC 2017 Instructions Booklet15 posts • Page 1 of 1 • 1
prasanna16391
Subject: 20 Puzzle Fusion @ 2017-10-04 10:48 PM (#23488) (#23488) Top


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Round 20: Puzzle Fusion

Please post your questions about this round here.

Corrections for v2:
* Palindrome Squared rules will be clearer, as below.
forcolin
Subject: Re: 20 Puzzle Fusion @ 2017-10-05 3:03 PM (#23523 - in reply to #23488) (#23523) Top





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Skyscrapers^2. Do we need to complete the clues or filling the grid will be enough?
prasanna16391
Subject: Re: 20 Puzzle Fusion @ 2017-10-05 3:05 PM (#23525 - in reply to #23523) (#23525) Top


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forcolin - 2017-10-05 3:03 PM

Skyscrapers^2. Do we need to complete the clues or filling the grid will be enough?


Filling the grid will be enough. The outside clues are added in the example just to make illustration clearer.
AndreyBogdanov
Subject: Re: 20 Puzzle Fusion @ 2017-10-08 12:57 AM (#23566 - in reply to #23488) (#23566) Top


Snowmen Author

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What is "subgrid" in the Palindrom puzzle? How many subgrids are in the example? Two or one? Is the area without internal 3x3 square a subgrid?
prasanna16391
Subject: Re: 20 Puzzle Fusion @ 2017-10-09 12:58 PM (#23603 - in reply to #23566) (#23603) Top


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AndreyBogdanov - 2017-10-08 12:57 AM

What is "subgrid" in the Palindrom puzzle? How many subgrids are in the example? Two or one? Is the area without internal 3x3 square a subgrid?


Sub-grid will be changed in the next version to 'thickly outlined square regions within the grid'. So in the example there is one. Hope it is clear now.
David McNeill
Subject: Re: 20 Puzzle Fusion @ 2017-10-09 6:20 PM (#23616 - in reply to #23488) (#23616) Top


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The Puzzle Fusion concept looks nice. However, I think a little more precision is needed in the rules for Spiral Galaxy^2.

Does the combined region have to be continuous i.e. made up of edge-connected cells? I assume yes. Does the symmetry exhibited by the combined region have to be 180 degree symmetry. I assume yes. There is at least one alternative solution which has a continuous region exhibiting mirror symmetry.
CHalb
Subject: Re: 20 Puzzle Fusion @ 2017-10-09 10:37 PM (#23617 - in reply to #23488) (#23617) Top




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I'm curious: Who made the Skyscrapers² puzzles and (who) had the idea for it? If you do not want to tell the name(s) before the championship, that's of course totally fine.
I'm asking because I had the same idea some years ago leading to this two puzzles:

https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?chlang=de&...
https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?chlang=en&...

Anyway, you have here two puzzles for training (with the small example even three). And I really like your much more elegant name than the one I've chosen :-).
forcolin
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 2:14 PM (#23648 - in reply to #23488) (#23648) Top





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just a graphic issue. in ARAF^2 one of the areas is of the wrong shade
prasanna16391
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 2:48 PM (#23655 - in reply to #23648) (#23655) Top


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forcolin - 2017-10-10 2:14 PM

just a graphic issue. in ARAF^2 one of the areas is of the wrong shade


Its not a graphic issue, unless I am misunderstanding this. Consider the solution as each region containing four circles, and the shading within each region is just to show the further division into regions containing two circles (i.e., regular Araf). The order of the shading is random, its just to depict differentiation.
prasanna16391
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 3:06 PM (#23658 - in reply to #23617) (#23658) Top


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CHalb - 2017-10-09 10:37 PM

I'm curious: Who made the Skyscrapers² puzzles and (who) had the idea for it? If you do not want to tell the name(s) before the championship, that's of course totally fine.
I'm asking because I had the same idea some years ago leading to this two puzzles:

https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?chlang=de&...
https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?chlang=en&...

Anyway, you have here two puzzles for training (with the small example even three). And I really like your much more elegant name than the one I've chosen :-).


Please bring this up again after the WPC and we can discuss it ;)
forcolin
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 4:02 PM (#23660 - in reply to #23655) (#23660) Top





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prasanna16391 - 2017-10-10 2:48 PM

forcolin - 2017-10-10 2:14 PM

just a graphic issue. in ARAF^2 one of the areas is of the wrong shade


Its not a graphic issue, unless I am misunderstanding this. Consider the solution as each region containing four circles, and the shading within each region is just to show the further division into regions containing two circles (i.e., regular Araf). The order of the shading is random, its just to depict differentiation.


The area on the right has only 2 circles, the area next to it has 6. At least this is what my printer prints. The area containing clues 2 and 6 should be of the same colour of the area containing 12 and 3
Para
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 5:46 PM (#23661 - in reply to #23660) (#23661) Top




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forcolin - 2017-10-10 4:02 PM

prasanna16391 - 2017-10-10 2:48 PM

forcolin - 2017-10-10 2:14 PM

just a graphic issue. in ARAF^2 one of the areas is of the wrong shade


Its not a graphic issue, unless I am misunderstanding this. Consider the solution as each region containing four circles, and the shading within each region is just to show the further division into regions containing two circles (i.e., regular Araf). The order of the shading is random, its just to depict differentiation.


The area on the right has only 2 circles, the area next to it has 6. At least this is what my printer prints. The area containing clues 2 and 6 should be of the same colour of the area containing 12 and 3


You're looking at it wrong. The first division is the black lines, giving 3 areas with four circles. Then, within each black-bordered area there is a light and dark area, both with two circles. The shaded areas are not connected. They just differentiate between the two areas within a single black-bordered region.
forcolin
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 5:57 PM (#23662 - in reply to #23488) (#23662) Top





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I understand this. If you read back, my initial statement was referring to just a graphic issue. I see the think lines, I just say that choosing the same grey shade for the two areas on the opposite sides of the think line is misleading.
prasanna16391
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 9:09 PM (#23664 - in reply to #23662) (#23664) Top


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forcolin - 2017-10-10 5:57 PM

I understand this. If you read back, my initial statement was referring to just a graphic issue. I see the think lines, I just say that choosing the same grey shade for the two areas on the opposite sides of the think line is misleading.


Ah ok. I don't think we will be changing this since in our IB prints the thick lines come clearly. Thanks for the note though, we will clarify the same at the Q&A.
prasanna16391
Subject: Re: 20 Puzzle Fusion @ 2017-10-10 10:08 PM (#23666 - in reply to #23616) (#23666) Top


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David McNeill - 2017-10-09 6:20 PM

The Puzzle Fusion concept looks nice. However, I think a little more precision is needed in the rules for Spiral Galaxy^2.

Does the combined region have to be continuous i.e. made up of edge-connected cells? I assume yes. Does the symmetry exhibited by the combined region have to be 180 degree symmetry. I assume yes. There is at least one alternative solution which has a continuous region exhibiting mirror symmetry.


Forgot to reply to this, but had noticed it and made amendments to the rules that are there in the current IB version available.
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