April Challenge 2012
Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight
May Cook-Off 2012
Little Elephant and Strings
July Challenge 2012
Chef's Dream, My Fair Coins, Gift Rift, Restaurant Rating
October Challenge 2012
Little Elephant and Order, The New Scheme, Event Organizer, Fierce Battles
October Challenge 2013
Helping Lira, Maxim and Dividers, Kamehameha
December Challenge 2013
Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
January Challenge 2014
Sereja and Graph, Chef and Feedback, Bon Appetit, Please like me
February Challenge 2014
Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Colored Array
March Challenge 2014
Team Split, Walk, Little Chef and Numbers
April Challenge 2014
Shortest Path in Binary Trees, Chef and Digits, Farmer Feb, Counting Matrices
May Challenge 2014
Compilers and Parsers, Chef-jumping, Stone
June Challenge 2014
Chef and Digit Jumps, Chef and Subarray, Guessing Game
January Lunchtime 2014
Chef and Shop, Chef and String
March Lunchtime 2015
Saving a gift of love, Chef Anup
