September Mega Cook-Off 2018 Division 2
Make a Permutation, ATM Machine
July Challenge 2018 Division 2
Reach Equilibrium, Magic Set, Strike or Spare
August Challenge 2018 Division 2
Modular GCD, Problem Sort
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures
December Challenge 2018 Division 2
Chef and Interactive XOR, Max and Electrical Panel
November Challenge 2018 Division 2
Chef and Ridges, Chef, Primes and Trees (Challenge), Chef and Happiness
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Surprise Chessboard, (Challenge) Chef and Takonemo, Chef and Circles
January Challenge 2019 Division 2
Lucky Number Game, A Pizza Slice, (Challenge) Chef and Matching Game, Fancy Quotes, Distinct Pairs, Different Neighbours, Yet Another Problem About Sequences, Chef and Modulo Game
February Challenge 2019 Division 2
Chef and Magical Jars, Appy and Contest
March Challenge 2019 Division 2
Chef got Recipes, Yet Again a Subarray Problem, Chef and a Beautiful Digit, (Challenge) Interleaving Strings
April Challenge 2021 Division 3
Worthy Matrix, Chef and Dice, Valid Pair, World Record, Strong Language
May Challenge 2021 Division 2 (Rated)
Tree House, Xor Equality, Tic Tac Toe, Modular Equation
India