February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bandwidth of a matrix, Bear and Extra Number, (CH) Bear and Sorted Rows
April Challenge 2017
Dish Of Life, Similar Dishes
August Long Challenge 2017
Chef and Rainbow Array, Palindromic Game, Greedy Candidates
September Challenge 2017
Minimum Good Permutation, Little Chef and Sums, Chef and Pick Digit, Sereja and Commands
October Challenge 2017
Chef and a great voluntary Program, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
March Challenge 2018 DIV 2
Minion Chef and Bananas, Minions and Voting, Chef and Glove, A Big Sale, Chef and Easy Problem, Mix the Colors
April Cook-off 2018 Division 2
Cut the Board, Binary Nim
July Cook-Off 2018 Division 2
Encoding Message, OR Matrix
September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
May Lunchtime 2018 Division 2
Trace of Matrix, Count Substrings
August Challenge 2018 Division 2
Problem Sort, Spell Bob, Sheokand and Number, Modular GCD
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Bad Shuffle
ProCon Junior (Rated for Division 2)
Chef and Secret Ingredient, Chef and Bored Games, Chef and Polygon Cakes, Chef and Sorting
