February Challenge 2018
Chef And The Patents, Chef And His Characters, Permutation and Palindrome, Car-pal Tunnel
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas
March Cook-off 2018 Division 2
Chef Goes to the Cinema, Chef Judges a Competition
March Lunchtime 2018 Division 2 (Unrated)
Chef and Friends, Magic Elements
April Challenge 2018 Division 2
Chef and Array (Challenge), Cutting Plants, Weight of Numbers, Highway Crossing, Count Good Prefixes, Average of Pairs, Workers
May Challenge 2018 Division 1
Fake Binary Search, Dibs on Fibs
July Challenge 2018 Division 1
Reach Equilibrium, No Minimum No Maximum
Dementia (Rated for Division 2)
Strings, Chef and Replication
Quick Code (Rated for Division 2)
Immortal Frieza, Majin Vegeta, Dr Geros lab
Encoder (Rated for Division 2)
Knight Chess, Paint the Wall
December Lunchtime 2018 Division 2
Print Pattern, Age Calculator
March Cook-Off 2019 Division 2
XOR N-bonacci Sequence, UEFA Champions League
March Lunchtime 2019 Division 2
Corrupted Seven-Segment Display, Testing Robot, Pogo Stick Competition
December Challenge 2020 Division 1
Hail XOR, Positive Prefixes, Even Pair Sum
March Cook-Off 2021 Division 2
Consecutive Deletions, Matrix XOR, Guess the Number
June Lunchtime 2021 Division 2
False Number, Unpleasant Ones
May Long Two 2022 Division 2 (Unrated)
Subsequence-Numbers Divisible by 7
India