September Challenge 2017
Minimum Good Permutation, Chef and Pick Digit, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Total Diamonds, Chef And his Cake, Penalty Shoot-out
September Lunchtime 2017
Chef and Cook-Off Contests
December Lunchtime 2017
Days in Month, Strange Function
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Chef And The Patents, Akanksha and End of Semester, Points Inside A Polygon, Car-pal Tunnel, Permutation and Palindrome, Chef And His Characters
June Cook-Off 2018 Division 2
Archi and Comparsion, Good Permutations
June Challenge 2018 Division 2
Binary Shuffle, Naive Chef
August Challenge 2018 Division 2
Problem Sort, Spell Bob, Sheokand and Number, Modular GCD
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Table Game, Bad Shuffle
ProCon 2018 (Rated for all)
The Great Run, Kill them with your success
March Challenge 2019 Division 1
Yet Again a Subarray Problem
India