July Challenge 2017
Calculator , Whats in the Name
August Long Challenge 2017
Chef and Mover, Palindromic Game, Greedy Candidates, Chef and Rainbow Array
October Challenge 2017
Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
January Challenge 2018
K-Concatenation, Partition the numbers, String Merging, Rectangle, Maximum Score
February Challenge 2018
Chef And His Characters, Chef And The Patents, Points Inside A Polygon, Car-pal Tunnel, (Challenge) Biased Committee, Permutation and Palindrome
March Challenge 2018 DIV 1
Minions and Voting, Chef and Easy Problem, Mix the Colors
May Challenge 2018 Division 1
Fake Binary Search, Dibs on Fibs
July Challenge 2018 Division 1
Reach Equilibrium, Chef and War with Taran (Challenge), No Minimum No Maximum, Gears
September Challenge 2018 Division 1
Chef and Condition Zero (Challenge), Table Game, Bad Shuffle
January Challenge 2019 Division 1
Distinct Pairs, A Pizza Slice, (Challenge) Chef and Matching Game, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences
October Challenge 2019 Division 1
Even Edges, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Doofish Matrix, Chefina and Prefix Suffix Sums, English, Chefland Army, (Challenge) Building Anthills
India