It is not very clear to me. My guess is that you are trying to use an array of arrays, probably something like this: 
( [1, 2, 3, 4,],
  [5, 6, 7, 8,],
  [9, 10, 11, 12,],
  [13, 14, 3, 16,],
  [2, 18, 19, 20,] )

[download]
but you'll have to explain why "2,7,12,16" and "2,4,7,12" should return true and why "1,6,8,12" and "1,5,14,15" should return false. Well, "1,5,14,15" being false, I can understand a plausible reason, because 15 is nowhere in the data structure, but why "1,6,8,12" should be false?

Je suis Charlie.

In reply to Re: perl array matrix by Laurent_R
in thread perl array matrix by perlhelp

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