February Challenge 2017
Chef and His Apartment Dues
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Villages and Tribes, Periodic Palindrome Construction, Chef goes Left Right Left
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, Partition the numbers
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And His Characters, Permutation and Palindrome, Chef And The Patents, Car-pal Tunnel
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples, Chef and Line
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas
July Challenge 2018 Division 2
Reach Equilibrium, Magic Set, Strike or Spare
ALKHWARIZM (Rated)
Help Voldemort, Sam, The Charming Angel
April Challenge 2019 Division 2
Playing with Numbers, Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing
India