January Challenge 2018
Maximum Score, Rectangle, K-Concatenation
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Table Game, Bad Shuffle
December Challenge 2019 Division 2
Addition, That Is My Score!, Sticky Notes, Binary XOR, Plus Multiply, Chefina and Ranges, Easy Subsequence Selection
January Challenge 2020 Division 2
English, (Challenge) Building Anthills, Breaking Bricks, Chefina and Prefix Suffix Sums, Equality, Doofish Matrix, Doraemon, Chef and Dynamo
January Cook-Off 2020 Division 2
Chef Chick, Exam Cheating, Range AND
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food, Under the Tunnels
India