February 2011 Contest
Coloring Colorable Graphs, Bogosort
February Cook - Off Challenge
Breaking Into Atoms, Three Way Communications
March 2011 Challenge
The Amazing All-In-One Cooking Machine - Challenge
April Long Contest
Number Game Revisited, Graphs in Euclidean Space
August Challenge 2015
Way Out, Social Cluster, Gravity Guy, Cooking Machine, Aditi and Magic Trick
June Challenge 2016
Chef And The Hiring Event, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
August Challenge 2016
Chef and Round Run, Chef and Chocolate
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem
October Challenge 2019 Division 2
Chef and Maximum Star Value, Phone Prices, Operations on a Matrix, Array Modification
November Challenge 2019 Division 2
Hard Sequence, From Zero to Infinity, Weapon Value
October Long 2022 Division 2 (Unrated)
Single Operation Part 1, Single Operation Part 2
