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At Least Three Difference (Posted on 2010-08-04) Difficulty: 3 of 5
Place the numbers 1-9 in the boxes so that the difference of each pair of numbers joined by a line is at least three. The number 8 has already been placed.

No Solution Yet Submitted by Brian Smith    
Rating: 5.0000 (1 votes)

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Some Thoughts re(2): solution by reasoning: errata | Comment 8 of 13 |
(In reply to re: solution by reasoning by ed bottemiller)


I wrote you without  having the diagram before my eyes

the passage "..I get H as calling  for a member of the R set, i.e. 1,2, or 9 -8 being placed in A by problem's initial conditions. 
Assigning 1 to H, D  could be either 4 or 5..."..

should read:         C  could be either 4 or 5


  Posted by Ady TZIDON on 2010-08-04 23:09:57
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