November Challenge 2019 Division 2
Weapon Value, Hard Sequence
December Challenge 2019 Division 2
Plus Multiply, Easy Subsequence Selection, That Is My Score!, Addition
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks, (Challenge) Building Anthills
February Challenge 2020 Division 2
The Theatre Problem, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, No Change Required
March Challenge 2020 Division 2
XOR Engine, Ada Bishop 2, Pintu and Fruits
April Challenge 2020 Division 2
COVID Pandemic and Long Queue, Leaked Answers (Challenge), Sell All the Cars, Unit GCD, Squared Subsequences, Strange Number, Ready Bitwise
May Challenge 2020 Division 1
Triple Sort, Chef and Bitwise Product, (Challenge) Nanobots
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food
August Challenge 2020 Division 1
Insanely Hard School Exams, Smallest KMP, Chef and Wedding Arrangements
September Challenge 2020 Division 1
Chefina and Swap, Ada Matrix, Find XOR, Chef and Trump Cards, A Problem on Sticks
October Challenge 2020 Division 1
Inversions, Positive AND, Replace for X, D-Dimensional MST
November Challenge 2020 Division 1
Restore Sequence, Magical Candy Store, Iron, Magnet and Wall
India