SudokuSolver Forum

A forum for Sudoku enthusiasts to share puzzles, techniques and software
It is currently Tue Mar 19, 2024 10:45 am

All times are UTC




Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Psycho Killer Jigsaw
PostPosted: Wed Jan 30, 2019 12:42 am 
Offline
Addict
Addict

Joined: Sat Jan 05, 2019 1:02 pm
Posts: 40
Location: Canberra, Australia
This puzzle has simple and familiar rules.

  • fill in the grid using 1 to 9 so that all white cells in rows, columns, and the outlined jigsaw areas have different values

So it is a Sudoku Jigsaw, kind of ...

  • the clues indicate the total of all digits in the corresponding "cage". A cage here means a Kakuro-style run.

So it is also a Killer, kind of … and a Kakuro, kind of ...

It's printer-friendly, in any case. And this one should be quite easy. Some instant fill-ins should be quickly identified (think "rule of 45").

Puzzle image:
Attachment:
SudokuPK-Demo-Larger.png
SudokuPK-Demo-Larger.png [ 21.7 KiB | Viewed 10119 times ]


Solution:
Code:
3 1 . 5 6 . 2 7 4 8 9
8 7 4 9 2 1 6 . 5 3 .
2 9 . 4 1 3 . 5 8 6 7
5 6 9 7 3 8 1 . 2 . 4
4 5 6 8 7 2 . 3 9 . 1
. 3 1 2 8 6 4 9 7 5 .
7 . 5 3 . 9 8 4 1 2 6
1 . 2 . 5 4 7 6 3 9 8
9 4 8 6 . 7 3 2 . 1 5
. 8 3 . 4 5 9 1 6 7 2
6 2 7 1 9 . 5 8 . 4 3


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Wed Feb 06, 2019 9:57 pm 
Offline
Addict
Addict

Joined: Mon Apr 21, 2008 11:35 pm
Posts: 49
Thanks for that interesting puzzle, Mathimagics!


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Thu Feb 07, 2019 3:40 am 
Offline
Addict
Addict

Joined: Sat Jan 05, 2019 1:02 pm
Posts: 40
Location: Canberra, Australia
A customer at last! :shock:

Thanks!

I see great potential for this kind of puzzle, but was beginning to wonder why nobody else did ...

Would you care to see a more challenging example?


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Thu Feb 07, 2019 10:06 pm 
Offline
Addict
Addict

Joined: Mon Apr 21, 2008 11:35 pm
Posts: 49
I'd love to see it! I may not solve it, but I'll give it a shot! :ok:


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Sun Feb 10, 2019 11:22 pm 
Offline
Grand Master
Grand Master

Joined: Tue Jun 16, 2009 9:31 pm
Posts: 280
Location: California, out of London
Very clever idea! I've always liked Kakuro. As you say - not too hard. I too would like to see the harder one!


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Mon Feb 11, 2019 4:32 am 
Offline
Addict
Addict

Joined: Sat Jan 05, 2019 1:02 pm
Posts: 40
Location: Canberra, Australia
.
Ok, the software is a bit raggedy at the moment, just a proof of concept prototype, but I can and will use it to give you a harder puzzle. This should be available within 12 hours of this post!

Thank you both for your interest! 8-)


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Mon Feb 11, 2019 8:21 pm 
Offline
Addict
Addict

Joined: Sat Jan 05, 2019 1:02 pm
Posts: 40
Location: Canberra, Australia
Here is a harder puzzle on the same grid. You will find that not all of the sums are given:
Puzzle image:
Attachment:
SudokuPK-002.png
SudokuPK-002.png [ 20.96 KiB | Viewed 10014 times ]

Solution::
Code:
2 8 . 6 4 . 3 5 9 7 1
7 5 9 1 3 8 4 . 6 2 .
3 1 . 9 8 2 . 6 7 4 5
6 4 1 5 2 7 8 . 3 . 9
9 6 4 7 5 3 . 2 1 . 8
. 2 8 3 7 4 9 1 5 6 .
5 . 6 2 . 1 7 9 8 3 4
8 . 3 . 6 9 5 4 2 1 7
1 9 7 4 . 5 2 3 . 8 6
. 7 2 . 9 6 1 8 4 5 3
4 3 5 8 1 . 6 7 . 9 2


Last edited by Mathimagics on Tue Feb 12, 2019 5:40 am, edited 1 time in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Tue Feb 12, 2019 5:37 am 
Offline
Addict
Addict

Joined: Sat Jan 05, 2019 1:02 pm
Posts: 40
Location: Canberra, Australia
I finally got the grid template manager and the solver/generator to communicate, so we can change the layout.

This puzzle should be anything but routine:

Puzzle image::
Attachment:
SudokuPK-004.png
SudokuPK-004.png [ 23.67 KiB | Viewed 10008 times ]


Solution::
Code:
9 7 2 . 4 8 5 6 3 1 .
1 3 8 5 6 . 9 2 . 7 4
4 . 6 1 9 3 . 7 2 8 5
6 1 5 . 2 4 7 8 . 3 9
8 2 3 9 7 1 . 4 5 . 6
. 5 7 3 8 6 2 1 4 9 .
5 . 4 6 . 9 1 3 8 2 7
2 9 . 4 3 5 8 . 7 6 1
3 6 1 7 . 2 4 5 9 . 8
7 8 . 2 5 . 6 9 1 4 3
. 4 9 8 1 7 3 . 6 5 2


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Wed Feb 27, 2019 12:18 pm 
Offline
Addict
Addict

Joined: Sat Jan 05, 2019 1:02 pm
Posts: 40
Location: Canberra, Australia
Oh dear, I seem to have lost my audience ... :(

Did I make the puzzles too hard? Not hard enough? Not interesting enough? :?:

I have no time at the moment for P&P trials myself, so feedback would be really useful for me …


Top
 Profile  
Reply with quote  
 Post subject: Re: Psycho Killer Jigsaw
PostPosted: Sat May 11, 2019 6:29 pm 
Offline
Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1893
Location: Lethbridge, Alberta, Canada
As I commented to Mathimagics, when I first saw these puzzles I wasn't sure how I would set them up in Excel worksheets, which is how I solve puzzles. I've now settled on this format (see below), for each cell the first number is the horizontal cage total, the second the vertical cage total and the third, of course, if for candidates; there may well be a better way for those more expert with the options available in Excel.

The demo version is, as one would expect, an easy one so I won't post a walkthrough.

Simple Hints:
Remember to make eliminations for rows, columns and jigsaw nonets.
When searching for hidden singles and pairs, don't forget the jigsaw nonets.
45s apply for the jigsaw nonets as well as for the rows and columns.

These puzzles are very similar to Texas Jigsaw Killers. Next time I update the TJK Archive, I'll add these as a separate table.


Attachments:
SudokuPK.jpg
SudokuPK.jpg [ 262.7 KiB | Viewed 9519 times ]
Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


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
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group