View unanswered posts | View active topics It is currently Sun May 27, 2018 9:27 pm ← Back to the Calcudoku puzzle page

 Page 1 of 4 [ 38 posts ] Go to page 1, 2, 3, 4  Next
 Print view Previous topic | Next topic
Blind spot
Author Message

Posted on: Wed May 17, 2017 11:25 am

Posts: 319
Joined: Tue Mar 01, 2016 10:03 pm
Blind spot
Sometimes I really struggle to solve a problem and end up going around in circles and concluding that the puzzle must be unsolvable. When this happens, I start again from scratch and go really slowly, checking step by step for any assumptions I might have made about the only possible numbers that can go in certain cells or cages. I generally find that I have made an unwarranted assumption and looking at the alternative(s) generally leads to resolution of the problem.

A case in point is yesterday's difficult 9x9 (SPOILER ALERT - Don't read on if you haven't solved it yet). There's a 22 cage near the upper left hand corner. Somehow, I got the idea in my mind that the only possible solutions were 985 and 976. As 976 was rendered impossible by the 6 and 7 in A3 and B3, this left 589 as the only solution and this led to me getting stuck over and over again. When I finally realised that the cage is L shaped and 949 is therefore another possible solution (d'oh!), I solved the remainder of the puzzle fairly quickly.

I was just wondering if other people tend to run into the same problem.

Posted on: Wed May 17, 2017 10:32 pm

Posts: 544
Joined: Fri May 13, 2011 1:37 am
Re: Blind spot
Sometimes, when looking at a cage a set of numbers will "pop" into my head (brain) and I get hung up on those.......then when the rest of the puzzle doesn't "fit" , then I go back and try all the possible combinations and one of them (that I hadn't thought of was the obvious right choice).....happens (most of the time) when I am in hurry to solve my puzzles!!!

Posted on: Thu May 18, 2017 2:09 pm

Posts: 317
Joined: Wed Apr 16, 2014 9:20 pm
Re: Blind spot
Yes, it happens to me.
I feel so dumb when I figure it out.

ETA: I have one right now on a book puzzle, B34V6 - from 51 Advanced Puzzles Extra (or Vol 2)
I usually do not mind negative numbers and subtraction cages but this puzzle is wicked.

Last edited by eclipsegirl on Thu May 18, 2017 11:47 pm, edited 1 time in total.

Posted on: Thu May 18, 2017 9:52 pm

Posts: 246
Joined: Sun May 22, 2016 2:17 pm
Re: Blind spot
Ditto! Sometimes I forget one of the possibilities for a cage and completely ignore it... I become convinced that the puzzle is unsolvable

Posted on: Sat May 20, 2017 12:30 pm

Posts: 15
Joined: Wed Mar 26, 2014 10:16 pm
Re: Blind spot
Wicked is the perfect description for B34V6! I have worked at this puzzle off and on for quite some time and have yet to solve it. I think it is one of Patrick's most difficult/challenging puzzles.

Posted on: Sat May 20, 2017 3:55 pm

Posts: 317
Joined: Wed Apr 16, 2014 9:20 pm
Re: Blind spot
@ diane123,
IF I am able to solve the puzzle, I will let you know.

Posted on: Sat May 20, 2017 6:12 pm

Posts: 15
Joined: Wed Mar 26, 2014 10:16 pm
Re: Blind spot
In January I e-mailed Patrick and asked him how many people had solved B34V6 and he replied that 8 people had. So, some puzzlers have figured it out, but not a lot.

Posted on: Sat May 20, 2017 6:30 pm

Posts: 317
Joined: Wed Apr 16, 2014 9:20 pm
Re: Blind spot
I have solved it and contacted you by private message.
You can also contact me by private message, if you want.

I wonder how many have solved it now?

Posted on: Sat May 20, 2017 8:23 pm

Posts: 2301
Joined: Thu May 12, 2011 11:58 pm
Re: Blind spot
eclipsegirl wrote:
I wonder how many have solved it now?

9 (NINE) people have so far submitted a correct solution..

Posted on: Sun May 21, 2017 12:25 am

Posts: 317
Joined: Wed Apr 16, 2014 9:20 pm
Re: Blind spot
There are several faster, better puzzlers than me.

I bet it is due to the access being limited to the 3rd annual subscription for all of us newbies. (sixth semi annual ?)

I am honored to be a solver of that frustating puzzle :namaste emoji that isn't supported:

@diane123, No contact from you. Do not fret. I would not give you (or anyone) the solution. I would only indicate where an error in logic has been made. Personally, when I solved my "blind spot" I felt like an idiot because my math was in error.

Display posts from previous:  Sort by
 Page 1 of 4 [ 38 posts ] Go to page 1, 2, 3, 4  Next

 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.