Return true if any isolated single zeros are present in the input M-by-N matrix (zeros with all adjacent elements being non-zero).
Example:
[ 2 2 0
2 0 5 ==> true
5 5 5 ]
[ 2 2 3
0 0 5 ==> false
5 5 5 ]
Background:
This function can be useful in different board games, such as Go, or the upcoming IQpuzzler challenge.

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Last Solution submitted on Sep 16, 2026

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