March Challenge 2021 Division 3
Chef and Groups, College Life 4, Paparazzi Gennady, Space Arrays, Wireless Electricity (Challenge), No Time to Wait, Interesting XOR!
April Challenge 2021 Division 3
Valid Pair, Strong Language, World Record, Chef and Dice, Worthy Matrix, Binary String MEX
May Challenge 2021 Division 2 (Rated)
An Interesting Sequence, Xor Equality, Tic Tac Toe, Modular Equation, Golf, Solubility
June Challenge 2021 Division 2 (Unrated)
Bitwise Tuples, Summer Heat, Bella ciao
August Challenge 2021 Division 2 (Unrated)
Special Triplets, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking
August Lunchtime 2021 Division 2
K-th Maximum, Just a Graph
CodeChef Starters 10 Division 2 (Rated)
Maximise the Subsequence Sum, Remove One Element
September Challenge 2021 Division 2 (Unrated)
XOR Equal, Shuffling Parities, Airline Restrictions, Travel Pass
October Challenge 2021 Division 2 (Unrated)
Longest AND Subarray, Digit Removal, MEX-OR
India