September Challenge 2019 Division 2
Chef and Good Subsequences, Chef and Interesting Subsequences , Chef Designed a Network, Doofish Set, Fuzzy Linear Combinations, Biladerim Icin, Easy Fibonacci
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Doofish Matrix, Chefina and Prefix Suffix Sums, English
February Challenge 2020 Division 1
Long Contest and Cook Off Overlaps, (Challenge) Raisins, Expected Change, Chef and Railway Stations, No Change Required
March Challenge 2020 Division 1
Chef and DAG, Winning Ways 2, Lasers Everywhere, Inverse of a Function, Lasers Everywhere Alternative
February Cook-Off 2020 Division 1
XOR Game, Chef and Pepperoni Pizza Again
SnackDown 2021 - Online Qualifiers
Prefix as a Substring 2, Minimise Difference, Maximum Number Of Distinct Elements, Lucky Number
SnackDown 2021 - Online Round 1B
Insider Subsequences, Queens Placement , Largest Laddu, Help Nishant
SnackDown 2021 - Online Pre-Elimination
Non-Decreasing Subsequence of size K, Product Pain, Guests like slippers
Peru