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09-21-2021 , 02:17 PM

#201

Lattimer

I is smart

Join Date: Feb 2009 Posts: 15,463

Eric has the anti-palindrome shown up in CtC at all? Or did you create it? I don't think I've seen it before.

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09-21-2021 , 02:37 PM

#202

Eric

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Join Date: Oct 2009 Posts: 13,865

Quote:

Originally Posted by Lattimer

Eric has the anti-palindrome shown up in CtC at all? Or did you create it? I don't think I've seen it before.

I know of no other use of this idea. It wouldn't surprise me if someone else has used it before, however.

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09-22-2021 , 11:58 AM

#203

ArcticKnight

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Join Date: Aug 2007 Posts: 20,802

Got is. Was fun.. I had starts and restarts so I spent a fair amount of time on it.

Feedback sent, Eric..

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09-26-2021 , 11:38 PM

#204

Eric

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I've got another with more anti-palindrome upcoming. I hope to complete alpha testing tomorrow, if I can squeeze it in with the sheep game.

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09-27-2021 , 11:45 AM

#205

Eric

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Pinwheel

Standard sudoku rules apply.
Cells within a cage must sum to the number in the top left corner of the cage.
Cells along a diagonal indicated by an arrow outside the grid must sum to the number by the arrow.
The green lines are anti-palindrome lines: cells equidistant from opposite ends must sum to 10.

https://f-puzzles.com/?id=yfoy5vkz

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09-27-2021 , 12:34 PM

#206

ArcticKnight

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Me with a question (surprise...lol)

Using one palindrome as an example

are the following the equidistant cells from the ends.

C3:R4 and C3:R5 (one space)
C3:R5 and C4:R3 (two spaces)
C4:R3 and C5:R2 (one space)
C5:R2 and C3:R4 (two spaces)

or just
C3:R4 and C3:R5 (one space)
C4:R3 and C5:R2 (one space)

Quote

09-27-2021 , 12:51 PM

#207

Lattimer

I is smart

Join Date: Feb 2009 Posts: 15,463

You're overthinking it. It is just like a regular palindrome, except instead of A=B, it's A+B=10

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09-27-2021 , 01:04 PM

#208

ArcticKnight

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Quote:

Originally Posted by Lattimer

You're overthinking it. It is just like a regular palindrome, except instead of A=B, it's A+B=10

I know the bold part. My question is about what A and B are, not what they represent.

Help me out

is it this (in one example)

C3:R4 and C3:R5 (one space) = 10
C4:R3 and C5:R2 (one space) = 10

I spent time on the last one misunderstanding the directions and don't want to do it again.

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09-27-2021 , 01:20 PM

#209

Eric

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If there is a four cell anti-palindrome line, call the numbers in the cells along the line A, B, C, D. A and D are at the ends, B and C in the middle. Then A+D=B+C=10.

R2C5 is at one end of a line. R5C3 is at the other end, so they are the same distance away from their respective ends. R3C4 and R4C3 are both one away from their respective ends (or two away from the other end, for that matter).

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09-27-2021 , 01:25 PM

#210

Eric

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Quote:

Originally Posted by ArcticKnight

C3R5 is 0 away from one end and 3 from the other. C3R4 is 1 away from the same end and 2 away from the other. They are not the same distance (as each other) from either end. Therefore they do not necessarily sum to 10.

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09-27-2021 , 01:32 PM

#211

ArcticKnight

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Quote:

Originally Posted by Eric

If there is a four cell anti-palindrome line, call the numbers in the cells along the line A, B, C, D. A and D are at the ends, B and C in the middle. Then A+D=B+C=10.

R2C5 is at one end of a line. R5C3 is at the other end, so they are the same distance away from their respective ends. R3C4 and R4C3 are both one away from their respective ends (or two away from the other end, for that matter).

Ok.. that helps

so is it A+D = 10 and B+C = 10 or A +B +C +D = 10

Or A +B = 10 and A + D = 10 and D + C = 10 and D + A (again) = 10

I am not trying to be obtuse.. there are zero references out there for an anti-palindrome in sudoku. This extended leg on each of them is confusing me. Sorry..

Last edited by ArcticKnight; 09-27-2021 at 01:39 PM.

Quote

09-27-2021 , 01:44 PM

#212

Lattimer

I is smart

Join Date: Feb 2009 Posts: 15,463

Quote:

Originally Posted by ArcticKnight

Ok.. that helps

so is it A+D = 10 and B+C = 10 or A +B +C +D = 10

Or A +B = 10 and A + D = 10 and D + C = 10 and D + A (again) = 10

I am not trying to be obtuse.. there are zero references out there for an anti-palindrome in sudoku. This extended leg on each of them is confusing me. Sorry..

It's the bolded.

Given a 6-length line, the cells A,B,C,D,E,F:

palindrome:
A=F
B=E
C=D

anti-palindrome:
A+F=10
B+E=10
C+D=10

Last edited by Lattimer; 09-27-2021 at 01:50 PM.

Quote

09-27-2021 , 01:47 PM

#213

Lattimer

I is smart

Join Date: Feb 2009 Posts: 15,463

34:44. I had to reset it twice.

Spoiler:

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09-27-2021 , 01:49 PM

#214

Eric

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Cells with the same colour must sum to 10. Other cells may or may not.

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09-27-2021 , 01:50 PM

#215

ArcticKnight

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Quote:

Originally Posted by Lattimer

It's the bolded.

Thx I should have been able to get that on my own looking back, but I appreciate the help...

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09-27-2021 , 01:51 PM

#216

Eric

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Quote:

Originally Posted by Lattimer

34:44. I had to reset it twice.

Spoiler:

Quote

09-27-2021 , 01:52 PM

#217

Eric

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Quote:

Originally Posted by ArcticKnight

Thx I should have been able to get that on my own looking back, but I appreciate the help...

No problem. I sometimes miss the most incredibly obvious stuff. Even while testing this puzzle.

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09-27-2021 , 01:53 PM

#218

ArcticKnight

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Quote:

Originally Posted by Eric

Cells with the same colour must sum to 10. Other cells may or may not.

That is great!!! But I am sure this is just a me problem --- though if this a new thing (anti-palindromes in a sudoku) a picture never hurts

Quote

09-27-2021 , 01:55 PM

#219

Lattimer

I is smart

Join Date: Feb 2009 Posts: 15,463

I think what complicated the understanding of this rule was we first exposed to it with an odd-length one, so the extra wording to account for the center cell made our heads turn sideways

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09-27-2021 , 02:10 PM

#220

Eric

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Quote:

Originally Posted by Lattimer

I think what complicated the understanding of this rule was we first exposed to it with an odd-length one, so the extra wording to account for the center cell made our heads turn sideways

Yeah, I was trying to parallel the palindrome rules, and imply (without giving away) how to deal with odd length lines. I don't think a picture works for that.

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09-27-2021 , 04:49 PM

#221

Eric

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I think this is how the contest stands. Wherever there is an X, I have received a solution from that person.

Extra region

XVXV

Kropki

Little cages

Arrow sudoku

Quarks

Cruces

Arrows are Dotty

Hot Swirls

Lines, Lines, Lines

What’s My Line

Pinwheel

ArcticKnight

Lattimer

Onuzq

bolt2112

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09-27-2021 , 06:37 PM

#222

ArcticKnight

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Join Date: Aug 2007 Posts: 20,802

Quote:

Originally Posted by Eric

Yeah, I was trying to parallel the palindrome rules, and imply (without giving away) how to deal with odd length lines. I don't think a picture works for that.

Yeah, on the last one you can't really describe it well or provide an example without just saying... "the intersection point is 5, damnit, now get to work kids,,,",lol

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09-28-2021 , 12:13 AM

#223

ArcticKnight

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Done.. was fun....thx Eric

Feedback sent

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10-01-2021 , 08:24 PM

#224

Eric

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Join Date: Oct 2009 Posts: 13,865

It seems like all I want to do right now is create sudokus.

Here's another one.

Baccarat

Standard sudoku rules apply.

Digits along an arrow must sum to the value in the attached circle.

Digits in a cage must sum to the value shown in the left upper corner of the cage.

Digits on a between line must have values strictly between the digits in the circles on the ends of the line.