In the 3x3 matrix: 

 a b c
d e f
g h i

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a, b, c, d and g cannot be zero, so only (combined) numbers which are accepted by the following regex are candidates /[1-9][1-9][1-9][1-9][0-9][0-9][1-9]0-9][0-9]/

This should weed out a bit more numbers than your regex.

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law

In reply to Re: Matrix Formation by CountZero
in thread Matrix Formation by artist

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