March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
July Challenge 2017
Chef and Sign Sequences, Tree Expectancy, Whats in the Name, Calculator
August Long Challenge 2017
Greedy Candidates, Palindromic Game, Chef and Mover, Chef and Rainbow Array
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
India