December Challenge 2017
Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Chef and Hamming Distance of arrays, Total Diamonds
February Challenge 2018
Permutation and Palindrome, Car-pal Tunnel, Chef And The Patents, Chef And His Characters
December Challenge 2018 Division 2
(Challenge) Delete DAG, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, Chef and Interactive Contests, Chef and An Ideal Problem
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Distinct Pairs, Different Neighbours
September Challenge 2019 Division 1
Fuzzy Linear Combinations, Chef Designed a Network
SnackDown 2021 - Online Qualifiers
Lucky Number, Minimise Difference
SnackDown 2021 - Online Round 1A
Round Robin Ranks , Dance Moves, Min Max LCM
SnackDown 2021 - Online Round 1B
Queens Placement , Largest Laddu, Help Nishant
SnackDown 2021 - Online Pre-Elimination
Non-Decreasing Subsequence of size K, Product Pain
Taiwan