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Even Corners and Equal Subgrids (Posted on 2009-08-18) Difficulty: 2 of 5
Each of the capital letters in bold in this 3x3 grid is to be substituted by a different digit from 1 to 9 such that :
  • Each of A, C, G and I is even, and:
  • The sum of the digits in each of the four 2x2 subgrids is equal.
A   B   C
D   E   F
G   H   I

Disregarding the rotations and reflections, how many distinct solutions are there?

See The Solution Submitted by K Sengupta    
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  Subject Author Date
SolutionAnalytical SolutionHarry2009-08-18 22:32:50
re(2): computer solutionCharlie2009-08-18 16:33:30
Solutioncomputer solutionCharlie2009-08-18 16:31:33
re: computer solutionJer2009-08-18 14:05:40
Solutioncomputer solutionDaniel2009-08-18 13:07:23
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