September Lunchtime 2019 Division 2
Chef and Football Match, Chef Feeds Cats
October Challenge 2019 Division 2
Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices, Even Edges
November Challenge 2019 Division 2
Physical Exercise, Hard Sequence, A Simple Game, Weapon Value
December Challenge 2019 Division 2
Easy Subsequence Selection, Addition, That Is My Score!, Binary XOR, Plus Multiply
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash, (Challenge) Raisins, Long Contest and Cook Off Overlaps
March Challenge 2020 Division 2
Pintu and Fruits, Ada Bishop 2, XOR Engine, Break
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
May Challenge 2020 Division 1
Triple Sort, Sorting Vases
February Cook-Off 2020 Division 2
Penalty Shoot-Out II, Tax Slabs
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food
June Challenge 2020 Division 1
The Tom and Jerry Game!, Operations on a Tuple, Covid Sampling (Challenge)
July Challenge 2020 Division 1
Chefina and Swaps, Missing a Point, Doctor Chef
August Challenge 2020 Division 1
Smallest KMP, Chef and Wedding Arrangements
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix
India