June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets, Chef and Prime Queries
August Long Challenge 2017
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs
October Challenge 2017
(Challenge) Connecting computers, A Balanced Contest, Counter Test For CHEFSUM, Chef and Cycled Cycles, Chef and a great voluntary Program, Chef and Magic Arrays, Max Mex
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function, Chang and Perfect Quadruples
August Cook-Off 2017
Real obtuse, From heaven to earth
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
November Cook-Off 2017
Skiing, Online Chess, Random Pair
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
