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rusdewey / mathdoku

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Option to Hide Operation Signs #13

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
It would be a nice challenge to be able to remove the operation signs.

Please see this YouTube video of someone solving a 9x9 without operation signs:
http://www.youtube.com/watch?v=SNoVf8IbzCw

It's quite a fun challenge. There are currently no other KenKen apps in the 
market which offer this feature.

Original issue reported on code.google.com by say...@gmail.com on 8 Dec 2010 at 9:17

GoogleCodeExporter commented 9 years ago 
I agree that this would be an interesting option to offer.

Because of the way the application is written, it shouldn't be particularly 
difficult to implement. My only concern is how difficult (i.e. time consuming) 
it will be for the android device to create a puzzle with a unique solution.

P.S. Like the video!

Original comment by em...@srlee.com on 18 Dec 2010 at 7:38

GoogleCodeExporter commented 9 years ago 
I'm not sure its harder at all to ensure a unique solution. Just create a 
unique regular puzzle, and then simply hide the operation signs when drawing 
the cells.

Original comment by bbux...@gmail.com on 28 Dec 2010 at 11:40

GoogleCodeExporter commented 9 years ago 
The problem is that by hiding the operations signs, you have more possibilities 
and a unique regular puzzle may become non-unique.

For example, SolutionsOperators.png shows a puzzle with operators with a unique 
solution. By hiding the operators, the 3 cage in the bottom right now has more 
maybes (it was 1,2 for "3+"; now it could also be 1,3 for "3/" or 1,4 for 
"3-"). Because of this, there is now another possible solution (see 
SolutionNoOperators.png and imagine the operators were hidden).

Original comment by em...@srlee.com on 28 Dec 2010 at 2:54

Attachments:

GoogleCodeExporter commented 9 years ago 
Added option to hide operation signs. Puzzle generation takes a little longer 
(since it has more possibilities to check for a unique solution), but still 
acceptable (IMHO).

There is a new checkbox on the options screen to control this. Not sure this is 
the best place for it - possibly better would be a checkbox at the top of the 
New Game sub-menu (where you choose the size of the grid), but I haven't worked 
out how to do this yet!

Revision 65

Mathdoku v1.8 Beta 3 available from download page

Original comment by em...@srlee.com on 15 Jan 2011 at 12:22

GoogleCodeExporter commented 9 years ago 
Changed the way the option works - Hide Operators is now tri-state: "Always", 
"Never", "Ask". If user selects "Ask", then an additional dialog appears when 
starting a New Game.

Revision 67

Mathdoku v1.8 Beta 4 available from download page

Original comment by em...@srlee.com on 17 Jan 2011 at 7:33

GoogleCodeExporter commented 9 years ago 
V1.8 released to Market

Original comment by em...@srlee.com on 23 Jan 2011 at 1:49

GoogleCodeExporter commented 9 years ago

Original comment by paul.din...@gmail.com on 15 Mar 2013 at 2:45