December Challenge 2019 Division 2
Chefina and Ranges, Addition, That Is My Score!, (Challenge) Cubical Virus, Easy Subsequence Selection, Binary XOR, Plus Multiply, Sticky Notes
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Doofish Matrix, Equality, Chefina and Prefix Suffix Sums, English, Breaking Bricks, (Challenge) Building Anthills
February Challenge 2020 Division 1
Expected Change, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, The Theatre Problem, No Change Required, Chef and Railway Stations
March Challenge 2020 Division 1
Lasers Everywhere, Inverse of a Function
April Challenge 2020 Division 1
Leaked Answers (Challenge), Sell All the Cars, Line Line Line Graph, Ready Bitwise, Perfect Power Divisors, Squared Subsequences, Strange Number, Factor Tree
May Challenge 2020 Division 1
Triple Sort, Chef and Bitwise Product
International Coding Marathon (Rated for all)
Lavanya Loves DFA, Mr Pr in a Dilemma , Is This JEE
June Challenge 2020 Division 1
Perfect Partitions, Danya and Different Values, Covid Sampling (Challenge), Guessing Game, Convenient Airports, The Delicious Cake, Operations on a Tuple, The Tom and Jerry Game!
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef, Weird Product
August Challenge 2020 Division 1
Insanely Hard School Exams, Subsequence Frequency Counting, Precious Stones , Chefina and Strange Tree, Smallest KMP, Chef and Wedding Arrangements
India