February Challenge 2016
Chef and Strange Operations, Sereja and Two Lines, Chef-Detective, Devu and a light discussion, Rectangles of Love
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Fibonacci Queries, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Devu and an Array, Chef and cities, Chef and Coins Game, Chef And Binary Operation, Chef and Array and K, Chef and Rectangle Array
July Challenge 2016
Chefland and Electricity, Chef and Robots Competition, Chef and Tetris, Andrash and Stipendium, Chef and Segments
September Challenge 2016
Chef and Friends, Dividing Machine, Chef and digits of a number, Faded Palindromes, JosephLand, Chef and calculation
March Cook-Off 2016
Alternating subarray prefix, Digital clock
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
February Challenge 2017
Chef and Yoda, Interval Game, Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
India