August Cook-Off 2015
Chef and the Wildcard Matching, Chef and the XORed Number
September Mega Cook-Off 2015
Super Numbers, Stacks, Forgotten Language
December Cook-Off 2015
Chef and Subarrays, Chef and Queries
August Challenge 2016
Chef and Round Run, Maximum Grid, Chef and Chocolate, Chef and Circle Run
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and Matrix Division, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
September Cook-Off 2016
Lazy Jem, The Lost Arithmetic Sequences, Counting Strings
February Cook-Off 2017
Download file, Chairs, Cooking Game
March Cook-Off 2017
Safe Robot, Yet Another Card Game, Rainbow Graph
March Challenge 2018 DIV 1
Pishty and Triangles, Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors, Minions and Voting
March Cook-off 2018 Division 1
Chef Goes to the Cinema, Chef Restores a Matrix
April Cook-off 2018 Division 1
Run Direction, Binary Nim
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