November Challenge 2014
Chef and Segment Game, Distinct Characters Subsequence
February Challenge 2015
Chef and Chain, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Interview, Broken Telephone, Division of Lands, Chef and Piano Scales
May Challenge 2015
Chef and Prime Divisors, Set Difference , Chef and new recipe
September Challenge 2015
Chain of Doughnuts, Nikitosh and xor, Count Steps in Matrix, Bank robbery, Lighthouses, Cracking the Code, Chef and Chetris
October Challenge 2015
Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle
November Challenge 2015
Receipt Recovery, Chef and cakes, Simple Sum, Chef and collection of stamps, Eugene and function
December Challenge 2015
Chef and the stones, Plane Division, Oracle Devu and Longest Common Subsequence, Chef and Filters
September Mega Cook-Off 2015
Forgotten Language, Super Numbers, Stacks
November Lunchtime 2015
Query over Matrix, Black And White Cells
October Cook-Off 2016
Sherlock and the Ugly Flower, Watson asks Does Permutation Exist, ChefWatson uses Social Network
July Challenge 2020 Division 2
Ada King, Chefina and Swaps, Missing a Point, Doctor Chef, Chef and Card Game, Chef and Strings
January Challenge 2021 Division 3
Watching CPL, Chef and Division 3, Encoded String
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