April Challenge 2017
Similar Dishes, Dish Of Life
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers, Chef and Subsequences, Chef and Sub Array
June Challenge 2017
Xenny and Coin Rankings, Pairwise union of sets, Triplets, Chef and the Feast, A Good Set, Chef and Prime Queries
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
March Challenge 2018 DIV 1
Minions and Voting, Mix the Colors, Chef and Easy Problem, Pishty and Triangles, Chef and Gcd Queries
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
May Challenge 2018 Division 1
Fake Binary Search, Dibs on Fibs
August Challenge 2019 Division 1
Dilemma, Chef and Gordon Ramsay, Maximize an Expression, Encoding, Guddu and his Mother
September Challenge 2019 Division 1
Expected GCD, Doofish Set, Chef Designed a Network
October Challenge 2019 Division 1
Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification
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