September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums, Sereja and Commands
October Challenge 2017
Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef And Easy Xor Queries
February Challenge 2018
Car-pal Tunnel, Permutation and Palindrome, Points Inside A Polygon, Chef And The Patents, Chef And His Characters, Broken Clock, Chef and odd queries
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Line
December Lunchtime 2018 Division 1
Age Calculator, Drawing Lines, Choosing from Buckets
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, Guess It Right, Chef and Secret Ingredients, Art of Balance
