February 2013 Challenge
Climbing Stairs, Buy1-Get1
March Challenge 2013
Tourist Translations, Approximately
April Challenge 2013
ChefGame, Kingdom Unity, Maximum Weight Difference, Levy Conjecture
June Challenge 2013
Predictopus, Lapindromes, Dessert Wizard
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Save The Princess, Splitting Candies
October Cook-Off 2013
Polo the Penguin and the Test
