June Challenge 2017
Chef and the Feast, Xenny and Coin Rankings, A Good Set
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
March Challenge 2018 DIV 2
A Big Sale, Minion Chef and Bananas, Chef and Glove, Mix the Colors, Chef and Easy Problem
April Challenge 2018 Division 2
Weight of Numbers, Count Good Prefixes, Average of Pairs, Workers
May Challenge 2018 Division 2
Minimum Deletions, Xor Again
September Challenge 2018 Division 2
Magician versus Chef, War of XORs
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Happiness, Chef and Difficult Contests, Appy Loves One, Chef and Ridges
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
LoC April 2018 (Rated for Division 2)
Cricket Score, Bob and Pallindromes
May Cook-Off 2019 Division 2
Chain Reaction, Misha and Nice Sets, Expected Xor, Recover the Sequence
Bangladesh