View unanswered posts | View active topics It is currently Thu Mar 28, 2024 8:28 pm



← Back to the Calcudoku puzzle page




Reply to topic  [ 6 posts ] 
 a4v17 - Two possible solutions 
Author Message

Posted on: Sat Aug 11, 2018 12:27 am




Posts: 956
Location: Ukraine
Joined: Tue Mar 01, 2016 10:03 pm
Post a4v17 - Two possible solutions
I thought I must have made a mistake when completing this puzzle as the final four cells (A2 to B3) were interchangeable. But the solution I entered was accepted as correct. As far as I can tell, I could swap the four cells and still get a valid solution, or am I missing something?


Profile
User avatar

Posted on: Sat Aug 11, 2018 10:46 am




Posts: 3296
Joined: Thu May 12, 2011 11:58 pm
Post Re: a4v17 - Two possible solutions
paulv66 wrote:
I thought I must have made a mistake when completing this puzzle as the final four cells (A2 to B3) were interchangeable. But the solution I entered was accepted as correct. As far as I can tell, I could swap the four cells and still get a valid solution, or am I missing something?


Can you send me the solutions via email?

edit: never mind, I checked the puzzle and am seeing the same thing (so far).

Not sure yet if the new & operator, the fact that it's a "from zero" puzzle,
or the fact that it's a twin puzzle is to blame [mellow]


Profile

Posted on: Sat Aug 11, 2018 10:57 am




Posts: 855
Joined: Fri May 13, 2011 6:51 pm
Post Re: a4v17 - Two possible solutions
paulv66 wrote:
I thought I must have made a mistake when completing this puzzle as the final four cells (A2 to B3) were interchangeable. But the solution I entered was accepted as correct. As far as I can tell, I could swap the four cells and still get a valid solution, or am I missing something?


After your post I have solved the puzzle (just now, very easy BTW) and I think you are right, two solutions, simply swapping the 4 numbers in (a2-b2-a3-b3) (I sent the smaller one in a2 scoring the 8 points).

A possible solution could be to break the cage "0&" (a3-b3-a4-b4) into two vertical 2-cell cages, with "0&" for (a3-a4) and "3-" for (b3-b4) what solves the uncertainty.


Profile

Posted on: Sat Aug 11, 2018 11:10 am




Posts: 956
Location: Ukraine
Joined: Tue Mar 01, 2016 10:03 pm
Post Re: a4v17 - Two possible solutions
Hi Patrick

I've sent a scanned copy of my solution.

Paul


Profile
User avatar

Posted on: Sat Aug 11, 2018 11:23 am




Posts: 3296
Joined: Thu May 12, 2011 11:58 pm
Post Re: a4v17 - Two possible solutions
paulv66 wrote:
I've sent a scanned copy of my solution.


from now on I'll need written proof of all solutions before points are awarded [tongue]


Profile
User avatar

Posted on: Sun Aug 12, 2018 8:52 pm




Posts: 3296
Joined: Thu May 12, 2011 11:58 pm
Post Re: a4v17 - Two possible solutions
I checked this now, and am happy to see that my solver is working correctly,
and that this twin should never have been accepted for the book...

Will check the logs next.

Also, the nice thing about selling this book as a PDF (so far), is that I can send everyone an updated copy once done,
and of course put an updated version online [love] [love] [love]


edit: this has been done now, and thanks to clm for the suggested correction.

I've also double-checked the other twins in the book, they're all ok [smile]


Profile
Display posts from previous:  Sort by  
Reply to topic   [ 6 posts ] 

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
All forum contents © Patrick Min, and by the post authors.

Forum software phpBB © 2000, 2002, 2005, 2007 phpBB Group.
Designed by STSoftware.