December Challenge 2015
Chef and the stones, Oracle Devu and Longest Common Subsequence
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity, Chef and Tetris
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
February Challenge 2017
Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
August Challenge 2018 Division 2
Problem Sort, Sheokand and Number, Spell Bob
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures
October Challenge 2019 Division 2
Operations on a Matrix, Phone Prices
June Challenge 2020 Division 2
Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Chef and Card Game, Chef and Strings
