August Challenge 2021 Division 3 (Rated)
Array Filling, Chef and Bulb Invention, Problem Difficulties, Olympics Ranking, Special Triplets
August Lunchtime 2021 Division 2
K-th Maximum, Just a Graph
CodeChef Starters 9 Division 2 (Unrated)
Black cells in a chessboard, Large Square
CodeChef Starters 10 Division 2 (Rated)
Magical Flips, Remove One Element, Maximise the Subsequence Sum
September Challenge 2021 Division 2 (Unrated)
XOR Equal, Shuffling Parities, Airline Restrictions, Travel Pass
September Cook-Off 2021 Division 2
Adjacency Hatred, Fake Swaps, Chef and Pairwise Distances, Zebra Crossing
SnackDown 2021 - Online Qualifiers
Lucky Number, Maximum Number Of Distinct Elements
October Challenge 2021 Division 2 (Unrated)
Longest AND Subarray, Digit Removal, MEX-OR, Three Boxes, Which Mixture
CodeChef Starters 16 Division 2 (Unrated)
Chef and Magical Steps, Professor And Directions
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM
November Challenge 2021 Division 2 (Unrated)
Wildcard Replacement, Equal Coins
India