September Challenge 2018 Division 2
War of XORs, Magician versus Chef, Chef and Adventures
December Challenge 2018 Division 2
Max and Electrical Panel, Chef and Interactive Contests, Chef and An Ideal Problem
October Lunchtime 2018 Division 2
Three Friends, Coloring the Grid, Weird Question
January Challenge 2019 Division 2
Lucky Number Game, A Pizza Slice, (Challenge) Chef and Matching Game, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences
May Cook-Off 2019 Division 1
Misha and Nice Sets, Searching for a Biclique
September Lunchtime 2019 Division 1
Treeversion, Find the Sum, All Substrings
November Lunchtime 2019 Division 1
Planting Trees, Washing Windows
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Sticky Notes, Test Generation, (Challenge) Cubical Virus, Addition
Alkhwarizm (Rated for all)
Weirwood Trees, Danny Wants To Know
May Cook-Off 2020 Division 1
Chef, Chefina and Their Friendship, Chefland Squads and the Army Chief, Chefina on a Trip, Roads in Chefland
ENIGMA - PLINTH'20 LNMIIT (Rated for all)
Corruption in Freedonia, Gru is Handing Out Bananas, Minion AND Range, Is it Sorted or Not, That is the Question, Recruit Villagers
India