February 2013 Challenge
Buy1-Get1, Little Elephant and Cards, Efficient Painting, Climbing Stairs, Magic Board
February Cook-Off 2013
Lack of Logic, Row and Column Operations
March Challenge 2013
Random decreasing function, Tourist Translations, Approximately, Fire Escape Routes, Minesweeper
March Cook-off 2013
The Ball And Cups, Palindrome
April Challenge 2013
Cylinder, Levy Conjecture, Maximum Weight Difference, Kingdom Unity, ChefGame, Barcelona Gameplay Tactics, Little Elephant and Music, Fault Tolerance
October Challenge 2013
Yet Another Nice Girl, Kamehameha, Edit Distance on Grid, Sereja and Transformation, Maxim and Dividers, Helping Lira, Little Elephant and Bamboo
November Challenge 2013
Chef Game, Superpowers of 2, Yet Another Cute Girl, Uncle Johny, Square Digit Squares, Missing some chairs
