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  Topic: Nightmare of 8 Dec 2006: 3D Medusa coloring?
istvan

Replies: 2
Views: 5125

PostForum: Daily Sudoku Nightmare & Archive   Posted: Fri Dec 08, 2006 11:24 pm   Subject: Nightmare of 8 Dec 2006: 3D Medusa coloring?
After several steps the grid looks like this:
.------------------.------------------.------------------.
| 8 46 369 | 7 2 13 | 5 1469 349 |
| 7 1 23569| 359 359 ...
  Topic: Mirror-reflex in today's (Nov 10 2006) nightmare
istvan

Replies: 4
Views: 3913

PostForum: Daily Sudoku Nightmare & Archive   Posted: Mon Nov 13, 2006 10:04 pm   Subject: Mirror-reflex in today's (Nov 10 2006) nightmare
Ruud, Ron, thanks guys. So if one finds such reflections chances are that there are some fishes close there.

(By the way, coloring the beam in both directions, I mean starting from one end of the s ...
  Topic: Mirror-reflex in today's (Nov 10 2006) nightmare
istvan

Replies: 4
Views: 3913

PostForum: Daily Sudoku Nightmare & Archive   Posted: Sat Nov 11, 2006 11:54 pm   Subject: Non-ER reflection in mirror-reflex
I found a different use of this technique. In the below example it works with more general reflections, not only with empty rectangles. (This arrangement is a random unfair sudoku, generated with Sudo ...
  Topic: Mirror-reflex in today's (Nov 10 2006) nightmare
istvan

Replies: 4
Views: 3913

PostForum: Daily Sudoku Nightmare & Archive   Posted: Fri Nov 10, 2006 10:16 pm   Subject: Mirror-reflex in today's (Nov 10 2006) nightmare
In today's nightmare there are several possibilities of using chains of empty rectangles. For example after few steps there are two such chains:

. . .|* * .|* . *
. 3 1|7 * 5|9 8 *
. 7 4|. . .|6 ...
 
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