May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Chef and Pick Digit, Little Chef and Sums, Minimum Good Permutation
October Challenge 2017
Chef and a great voluntary Program, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Villages and Tribes, Chef Hates Palindromes, Periodic Palindrome Construction, Chef and Intersection Line, Chef goes Left Right Left
December Challenge 2017
Total Diamonds, Santa Delivering Problem, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays
August Cook-Off 2017
Real obtuse, From heaven to earth
September Cook-Off 2017
Statistics Construction, Subsequence Equality
India