October Challenge 2013
Maxim and Dividers, Kamehameha, Helping Lira
January Challenge 2014
Magic Trick, Sereja and Graph, Meteor, Bon Appetit, Please like me, Chef and Feedback
February Challenge 2014
Little Elephant and Subarrays, Colored Array, Longest Common Pattern, Make Him Happy, Draughts, Little Elephant and Movies
May Challenge 2014
Little Elephant and Balloons, Sereja and Game, Compilers and Parsers, Dynamic Trees and Queries, Chef-jumping, Fun with AGp, Chef and Strange Matrix, Stone
June Challenge 2014
Little Elephant and Blocks, Forgot Password, Guessing Game, Two Companies, Chef and Digit Jumps, Chef and Functions, Maxim and Progressions, Chef and Subarray
September Challenge 2014
Flooring, Fun with Rotation, Chef and sequence, Chef and Left-Right, Chef and Swaps, Chef and Rainbow Array - 2
November Challenge 2015
Ingredients, Receipt Recovery, Chef and collection of stamps, Eugene and function, Simple Sum, Chef and cakes
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
China