Pity that eval is forbidden - I had quite an elegant solution using it.
Check to see if a Sudoku Puzzle is Solved
All your base are belong to us
Getting logical indexes
Sum the elements in either diagonal of a square matrix
Wayfinding 1 - crossing
Insert certain elements into a vector.
Three grind is shipsstraigt
Wrap a vector, but insert NaN's at the wrap-positions.
Mmm! Multi-dimensional Matrix Multiplication
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