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Sum Thing Puzzle #2102 by Eranus
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ERANUS



Joined: 17/05/2010 11:04:14
Messages: 106
Location: Israel
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Number: Puzzle #2102
Genre: Sum Thing
Author: Eranus
Appeared at: January 7, 2011
SPOILER: This is the smallest puzzle layout I could find that corresponds to an invertible matrix (dimensions 6X6). By invertible matrix I mean a layout that will be unique no matter what numbers one fills in the circles. I think a 5X5 or smaller layout is impossible with the current rules.
I will be glad if I'm proven wrong. I could not find another 6X6 layout either. For those interested, this subject is discussed at this thread and this thread in the forum. Other invertible matrix puzzles are:
Puzzle #2268 (still in the vestibule) (9X9),
Puzzle #2068 (8X8),
Puzzle #2212 (7X7),
Puzzle #2080 (8X8) and
Puzzle #2066 (12X12).
 
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