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  Topic: More Eureka
daj95376

Replies: 3
Views: 10499

PostForum: Solving techniques, and terminology   Posted: Sun Nov 04, 2012 3:46 pm   Subject: More Eureka
Correcting Dan's typos:

W-Wing: (4=6)r3c5 - r3c4 = r46c4 - (6=4)r4c6 => r3c6,r5c5<>4
  Topic: Sudopedia: Eureka notation
daj95376

Replies: 18
Views: 37485

PostForum: Solving techniques, and terminology   Posted: Sat Nov 03, 2012 4:58 pm   Subject: Sudopedia: Eureka notation
I don't see what can be Wrong! with asking a question. Let me put it another way. If r3c6 contains only the two candidates <35>, why on earth would you write (3-5)r3c6?

The Wrong! was in re ...
  Topic: Sudopedia: Eureka notation
daj95376

Replies: 18
Views: 37485

PostForum: Solving techniques, and terminology   Posted: Sat Nov 03, 2012 6:24 am   Subject: Sudopedia: Eureka notation
Help me here:

(3=5)r3c6 says r3c6 is a bivalue cell. Right?

(3-5)r3c6 says what??

Wrong!

(3=5)r3c6 says there's a strong inference between the candidate <3> and the candidate <5& ...
  Topic: Sudopedia: Eureka notation
daj95376

Replies: 18
Views: 37485

PostForum: Solving techniques, and terminology   Posted: Fri Nov 02, 2012 11:13 pm   Subject: Sudopedia: Eureka notation
Thanks Danny, I will try and digest your working definitions, but I'm having trouble seeing how a bivalue can be both.

A bivalue cell is neither a strong inference nor a weak inference. There's onl ...
  Topic: Sudopedia: Eureka notation
daj95376

Replies: 18
Views: 37485

PostForum: Solving techniques, and terminology   Posted: Fri Nov 02, 2012 4:44 pm   Subject: Sudopedia: Eureka notation
I don't think that last sentence is very accurate.
It was a failed attempt at "whimsey". Someone use to repeat the conclusion of discontinuous loops ... and I thought it was you. Sorry!
  Topic: Sudopedia: Eureka notation
daj95376

Replies: 18
Views: 37485

PostForum: Solving techniques, and terminology   Posted: Fri Nov 02, 2012 3:28 pm   Subject: Sudopedia: Eureka notation
Here's my "working definition" of strong inference and weak inference.



Strong Inference: When you have two possible outcomes and you assume that one outcome isn't true, then you must ...
  Topic: Another M I
daj95376

Replies: 6
Views: 6977

PostForum: Other puzzles   Posted: Thu Nov 01, 2012 6:02 pm   Subject: Another M I
A discontinuous loop that produces eliminations in [c1] and [b7].
+--------------------------------------------------------------------------------+
| 5 469 1 | ...
  Topic: Eureka help
daj95376

Replies: 18
Views: 31530

PostForum: Solving techniques, and terminology   Posted: Thu Nov 01, 2012 4:41 am   Subject: Eureka help
I found Angus Johnson's post from 2005 here. I had forgotten his "Type 3" was for simple coloring, which we don't have in this example. Perhaps it is X-coloring, but I can't check that out r ...
  Topic: Eureka help
daj95376

Replies: 18
Views: 31530

PostForum: Solving techniques, and terminology   Posted: Wed Oct 31, 2012 7:15 pm   Subject: Eureka help
+-------+-------+-------+
| . . . | . . . | / . . |
| . . . | . . . | / . . |
| . 28. | . . . | 2 . . |
+-------+-------+-------+
| . . . | . . . | / . . |
| . . . | . . . | / . . |
| . . . | . ...
  Topic: Eureka help
daj95376

Replies: 18
Views: 31530

PostForum: Solving techniques, and terminology   Posted: Wed Oct 31, 2012 6:52 pm   Subject: Eureka help
[Withdrawn: I was mistaken about the specifics of AJ's Type 3 Simple Coloring.]
  Topic: Eureka help
daj95376

Replies: 18
Views: 31530

PostForum: Solving techniques, and terminology   Posted: Wed Oct 31, 2012 11:34 am   Subject: Eureka help
[Withdrawn: I was mistaken about the specifics of AJ's Type 3 Simple Coloring.]
  Topic: Menneske impossible
daj95376

Replies: 9
Views: 7964

PostForum: Other puzzles   Posted: Tue Oct 30, 2012 10:34 pm   Subject: Menneske impossible
M-Ring C (6=7)r1c5 - r3c56 = (7-6)r3c8 = (6)r3c56 - loop => r3c8<>3; r12c4<>6

r12c48 <39> UR Type 1.2223 <> 39 r2c4

You me ...
  Topic: Eureka help
daj95376

Replies: 18
Views: 31530

PostForum: Solving techniques, and terminology   Posted: Tue Oct 30, 2012 10:13 pm   Subject: Re: Eureka help
[Withdrawn: I was mistaken about the specifics of AJ's Type 3 Simple Coloring.]
  Topic: Menneske impossible
daj95376

Replies: 9
Views: 7964

PostForum: Other puzzles   Posted: Tue Oct 30, 2012 4:02 pm   Subject: Menneske impossible
Impossible it ain't.

+--------------------------------------------------------------------------------+
| 267 25678 2358 | 369 67 1 | 4 35679 567 |
| 46 ...
  Topic: Eureka help
daj95376

Replies: 18
Views: 31530

PostForum: Solving techniques, and terminology   Posted: Tue Oct 30, 2012 3:33 pm   Subject: Re: Eureka help
[Withdrawn: I was mistaken about the specifics of AJ's Type 3 Simple Coloring.]
  Topic: Menneske 2038613
daj95376

Replies: 11
Views: 6592

PostForum: Other puzzles   Posted: Thu Oct 11, 2012 5:15 pm   Subject: Menneske 2038613
I also used the DP 49 in boxes 258. Either r1c4 or r6c6=6 or r9c6=8. Common outcome; r4c6=6.
r6c6 = 6 implies r4c6 =6? How can that be? They are in the same column.

If r6c6=6 is false, then it's ...
  Topic: Vanhegan extreme October 5, 2012
daj95376

Replies: 4
Views: 3410

PostForum: Other puzzles   Posted: Tue Oct 09, 2012 4:13 pm   Subject: Vanhegan extreme October 5, 2012
My solution is very similar to Dan's, so I looked for a totally different alternate but, after spending more than an hour, gave up.

Danny, if you read this I would be interested in what your progr ...
  Topic: Menneske 2897824
daj95376

Replies: 13
Views: 8165

PostForum: Other puzzles   Posted: Mon Oct 08, 2012 7:59 pm   Subject: Menneske 2897824
Then, I saw we were slicing and dicing this every way possible.

The same reason for my post.
  Topic: Menneske 2897824
daj95376

Replies: 13
Views: 8165

PostForum: Other puzzles   Posted: Mon Oct 08, 2012 4:01 pm   Subject: Menneske 2897824
Another "simple" example for using the <79>UR. (Almost the same as Keith's solution.)

after basics
+-----------------------------------------------------+
| 4 8 3 | ...
  Topic: Vanhegan fiendish October 3, 2012
daj95376

Replies: 5
Views: 4083

PostForum: Other puzzles   Posted: Mon Oct 08, 2012 3:56 pm   Subject: Vanhegan fiendish October 3, 2012
Ted,

Thanks! Much easier to reconstruct.
 
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