this is the commented version of my previous entry (solution 181910)
this is my original submission modified for ease of reading
whoops, didn't see your thing about "easy to understand code."
Connect Four Win Checker
Back to basics 18 - justification
Given a window, how many subsets of a vector sum positive
Say something funny
Project Euler: Problem 5, Smallest multiple
Getting logical indexes
Implement Solitaire cipher for N long deck.
Is this a valid Tic Tac Toe State?
Project Euler: Problem 9, Pythagorean numbers
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