May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
July Challenge 2017
Whats in the Name, Calculator
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef and Hamming Distance of arrays, Penalty Shoot-out, Total Diamonds, Chef And his Cake
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
February Challenge 2018
Chef And The Patents, Permutation and Palindrome, Car-pal Tunnel, Chef And His Characters
February Cook-Off 2018
Chef and Cook-Off, Chef and Tuples
March Challenge 2018 DIV 1
Chef and Easy Problem, Mix the Colors, Minions and Voting
India