February Challenge 2018
Chef And The Patents, Chef And His Characters, Permutation and Palindrome
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again, Dibs on Fibs
December Challenge 2018 Division 1
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR
October Challenge 2018 Division 2
Chef and Serves, Chef and Circles, Byte to Bit, Chef and Surprise Chessboard, Minimize Digitsum, Beautiful Bricks, Appy and Balloons
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, A Pizza Slice
February Challenge 2019 Division 1
Manhattan Rectangle, Chef and Secret Ingredients, Art of Balance
March Challenge 2019 Division 1
Cheating on Queue, Yet Again a Subarray Problem
April Challenge 2019 Division 1
Playing with Numbers, Subtree Removal
May Challenge 2019 Division 1
Ada Rooks 2, Where to Build the Roads
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Codechef War, Circular Merging
September Challenge 2019 Division 1
Biladerim Icin, Fuzzy Linear Combinations, Chef Designed a Network
October Challenge 2019 Division 1
Even Edges, (Challenge) Maximizing LIS, Array Modification, Chef and Maximum Star Value, Bacterial Reproduction
November Challenge 2019 Division 1
Physical Exercise, Smallest Beautiful Number
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Chefina and Prefix Suffix Sums, English, (Challenge) Building Anthills
Taiwan