Kata: Potter http://craftsmanship.sv.cmu.edu/katas/potter-kata
Kata: FizzBuzz http://craftsmanship.sv.cmu.edu/katas/fizzbuzz
Kata: Codebreaker http://www.solveet.com/exercises/Kata-CodeBreaker/14
Kata: Prime Factors http://craftsmanship.sv.cmu.edu/katas/prime-factors-kata
Kata: Bownling http://codingdojo.org/cgi-bin/index.pl?KataBowling
Kata: Roman Numerals http://www.codingdojo.org/cgi-bin/index.pl?KataRomanNumerals