October Cook-Off 2017
Chef and Weird Queries, Chef and Employment Test
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And His Characters, Chef And The Patents, Permutation and Palindrome
May Cook-off 2018 Division 2
Best Cake Ever, Secret Recipe
April Challenge 2018 Division 2
Average of Pairs, Workers
December Challenge 2018 Division 2
(Challenge) Delete DAG, Chef and An Ideal Problem, Chef and Interactive Contests
January Challenge 2019 Division 2
Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes
February Challenge 2019 Division 2
Manhattan Rectangle, Deputy Chef, Art of Balance, Chef and Secret Ingredients, Chef and Magical Jars, Appy and Contest
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
March Challenge 2019 Division 2
Chef and a Beautiful Digit, Yet Again a Subarray Problem, Chef and Number Game, Chef got Recipes
March Cook-Off 2019 Division 2
XOR N-bonacci Sequence, UEFA Champions League
April Challenge 2019 Division 1
Playing with Numbers, Subtree Removal
Bangladesh