View unanswered posts | View active topics It is currently Thu Aug 13, 2020 7:51 pm ← Back to the Calcudoku puzzle page

 Page 1 of 1 [ 7 posts ]
 Print view Previous topic | Next topic
-3 t0 3
Author Message

Posted on: Thu Mar 14, 2019 8:42 am

Posts: 753
Joined: Fri May 13, 2011 1:37 am
-3 t0 3
85 minutes to do today's -3 to +3 all because my mind got stuck on only one solution for the -4+ cage

Posted on: Thu Apr 25, 2019 5:55 pm

Posts: 753
Joined: Fri May 13, 2011 1:37 am
Re: -3 t0 3
Today's -3 to +3, as always seems to have a "key cage".........today's ( I think) was the cage of: e5,e6 and f6......it took quite awhile as I did most of puzzle and then "ran into" this cage.........looking at the rest of the puzzle my best guess involved a couple of 3's.......then struggled with rest of puzzle for next 20 minutes and then after looking at some of the other areas of the puzzle that was affected, decided "my guess" was "way" wrong.......for those who do try this puzzle I think that cage was the "key".......would like to know if others found the same or something different.

Posted on: Fri Apr 26, 2019 6:14 pm

Posts: 476
Joined: Wed Apr 16, 2014 9:20 pm
Re: -3 t0 3
Hi Beaker,
When I have this issue, I often avoid that “key” cage until the end.
There can be too many possibilities.

———————————————————————
As I looked back to when I saved that puzzle, I had most of row 2 done. The only 2 cells I had left belonged to the 4- cage, and I knew what those two numbers had to be

I also had most of row 3 completed. And that forced the number in 3D.

Then you still have to solve the rest of the puzzle to get the proper order of the two numbers in row 2.

I will send you a PM describing my approach
—————————————————————-
ETA : I am doing the wrong puzzle. There is no -4 + cage in the Extra puzzle.

Posted on: Thu Nov 28, 2019 6:22 am

Posts: 753
Joined: Fri May 13, 2011 1:37 am
Re: -3 t0 3
I think I just did my best time for this type of puzzle......quite lucky I think....7.6 minutes

Posted on: Sun Dec 01, 2019 12:46 pm

Posts: 682
Location: Dublin, Ireland
Joined: Tue Mar 01, 2016 10:03 pm
Re: -3 t0 3
Well done beaker. I always used to struggle with negative numbers, particularly the subtraction cages, where the order in which you do the subtraction affects the result. I've got a bit better at doing them, but they can be quite time consuming and it's easy to get confused.

Posted on: Sun Dec 01, 2019 8:25 pm

Posts: 753
Joined: Fri May 13, 2011 1:37 am
Re: -3 t0 3
So true......I usually have to experiment with various cages writing the possibilities on paper and comparing them to each other and how to fit them on the puzzle.......but this one, I simply thought I would try on the screen with " 0 " s first and the other given numbers and for some reason, everything I tried worked........I usually have to spend 25 to 30 minutes on these because of the negative numbers........I dread every time I have to do one of these as I always think that this is the 1st one I don' get.......so far, so good ..........I still have trouble with the 8x8's when numbers are zero to seven and only get about 75% of them

Posted on: Mon Dec 02, 2019 1:37 am

Posts: 682
Location: Dublin, Ireland
Joined: Tue Mar 01, 2016 10:03 pm
Re: -3 t0 3
Concentrating on the zeroes definitely helps. I usually bold the zero cells, so that the pattern stands out.

Display posts from previous:  Sort by
 Page 1 of 1 [ 7 posts ]

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

Search for:
 Jump to:  Select a forum ------------------ English    Announcements    Calcudoku General    Other number stuff    Solving strategies and tips    Specific puzzles / your own puzzles    Timed Puzzles    Bugs and errors    Killer Sudoku    Sudoku Nederlands    Aankondigingen    Calcudoku Algemeen    Oplostips en strategieën Italiano    Calcudoku Generale    Strategie e consigli per risolvere Español    Avisos    Calcudoku - General    Estrategias de solución y aspectos relevantes
All forum contents © Patrick Min, and by the post authors.

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