April Challenge 2016
Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chefland and Electricity
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
June Challenge 2017
A Good Set, Xenny and Coin Rankings
India