July Challenge 2017
Whats in the Name, Chef and Sign Sequences, IPC Trainers, Calculator
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
May Challenge 2018 Division 2
Xor Again, Dibs on Fibs, Fake Binary Search, Minimum Deletions, Change the Signs, Mighty Friend
June Challenge 2018 Division 2
Two Flowers, Vision, Sheokand and String, Binary Shuffle, Naive Chef
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
October Challenge 2019 Division 2
Even Edges, Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
December Challenge 2019 Division 2
Easy Subsequence Selection, That Is My Score!, Plus Multiply, Chefina and Ranges
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash
Egypt