September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Table Game, Bad Shuffle
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
November Challenge 2018 Division 2
Chef and Happiness, Chef and Difficult Contests, Chef and Ridges
October Challenge 2018 Division 2
Appy and Balloons , Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Yet Another Problem About Sequences, Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, (Challenge) Chef and Matching Game, A Pizza Slice
February Challenge 2019 Division 1
Art of Balance, Manhattan Rectangle, Chef and Secret Ingredients, Appy and Contest
June Challenge 2019 Division 1
Chef and Ingredients, Sum and GCD
August Challenge 2019 Division 1
Guddu and his Mother, Dilemma, Maximize an Expression
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
December Lunchtime 2019 Division 1
Guess the number, The Evil Professor
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Chefina and Prefix Suffix Sums
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Paparazzi Gennady, Space Arrays
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