This is (more or less) cribbed from the USC contest winner's solution.
Very fast and very compact solution. Nice usage of complex to calculate distance between points and recursion.
Add two numbers
Circle and Quadratic
Stuff the Board
Sum of odd numbers in a matrix
Sokoban: Puzzle 10.45
PACMAT - Ghosts Random; 3 Lives
Factorial: Unlimited Size : java.math
Image Processing 2.1.1 Planck Integral
Make a Pandiagonal Prime Magic Square: 11 x 11
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