September Challenge 2017
Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
Maximum Score, Rectangle, K-Concatenation
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
March Challenge 2018 DIV 2
A Big Sale, Minion Chef and Bananas, Mix the Colors, Chef and Glove
March Lunchtime 2018 Division 2 (Unrated)
Chef and Friends, Three Integers, Magic Elements
April Challenge 2018 Division 2
Average of Pairs, Workers, Count Good Prefixes, Weight of Numbers
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Bad Shuffle
June Lunchtime 2019 Division 2
Ping Paja Pong, Magda and Silly Pairs
