February Challenge 2017
Interval Game, Chef and Yoda, Gerrymander, Most Frequent Element, Chef and His Apartment Dues, Chef and Triangles
March Challenge 2017
Cooking Schedule, Xenny and Alternating Tasks, Pishty and birthday, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
February Lunchtime 2017
Bear and House Queries, Bear and Milky Cookies
April Challenge 2017
Dish Of Life, Similar Dishes
October Challenge 2017
(Challenge) Connecting computers, A Balanced Contest, Counter Test For CHEFSUM, Max Mex, Chef and a great voluntary Program, Chef and Magic Arrays, Chef and Cycled Cycles
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
March Cook-Off 2017
Rainbow Graph, Yet Another Card Game, Safe Robot
April Cook-Off 2017
Bear and Candies 123, Bear and AB
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
March Lunchtime 2017
Bear and Ladder, Bear and Species
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
India