This should not work in general. It returns false-positive for consecutive 1 5 7 :-)
This should not work, but test suite only requires us to check for groups of three in columns.
Thanks for noticing that...I'll edit the test suite and fix that.
Set some matrix elements to zero
Replace multiples of 5 with NaN
Max Change in Consecutive Elements
Breaking Out of the Matrix
"Find out the best cricket"
Crunch that matrix!
Still more miles to go before I sleep
Rolling maximums above a threshold
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