November Challenge 2019 Division 2
Hard Sequence, Weapon Value, A Simple Game
December Challenge 2019 Division 2
Plus Multiply, Easy Subsequence Selection, That Is My Score!
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
February Challenge 2020 Division 2
The Theatre Problem, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, No Change Required, Chef and Railway Stations
March Challenge 2020 Division 1
XOR Engine, Ada Bishop 2, Pintu and Fruits
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Ready Bitwise, Leaked Answers (Challenge)
January Lunchtime 2020 Division 2
Chef and Street Food, Bob and His Friends
July Challenge 2020 Division 1
Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix
January Challenge 2021 Division 2
Fair Elections, Watching CPL, Chef and Ants, Expected Number of SCCs
November Cook-Off 2021 Division 2
Product Pain, Missing Sums, Make it Divisible
February Cook-Off 2022 Division 2
Perfect Permutation, Prefix Permutation
Starters 41 Division 2 (Rated)
Black and White, Path Parity, Is this priority or parity!, Remove and Add, Equal Integers
Starters 61 Division 1 (Unrated)
Palindrome Partition, Weird Subarrays, Red Blue Flowers, Row Bombing, Subarray Removal
India