Make a checkerboard matrix
Extract leading non-zero digit
Make one big string out of two smaller strings
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Sums of Multiple Pairs of Triangular Numbers
Stress-Strain Properties - 1
Scrabble Scores - 12
Scrabble Scores - 13
Lights Out 2 - 5x5, 4 moves
Lights Out 7 - 5x5, x moves
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