August Cook-Off 2015
Chef and the Wildcard Matching
April Challenge 2016
Chef and Ballons, Chef And Coloring
September Challenge 2016
Chef and digits of a number, Faded Palindromes
October Cook-Off 2016
Watson asks Does Permutation Exist
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine, Median of adjacent maximum numbers, Courses in an university
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets
July Challenge 2017
Chef and Sign Sequences, Whats in the Name, Calculator , IPC Trainers
August Long Challenge 2017
Greedy Candidates, Chef and Mover, Chef and Rainbow Array
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
India