Programming Praxis (http://programmingpraxis.com http://programmingpraxis.com) provides a collection of etudes, updated weekly, for the education and enjoyment

Programming Praxis (http://programmingpraxis.com http://programmingpraxis.com) provides a collection of etudes, updated weekly, for the education and enjoyment of the savvy programer. Although there is some math content (the current exercise uses the chinese remainder theorem), Programming Praxis is much less math-oriented than Project Euler.