March Challenge 2016
maximize the sum, Palindromic substrings
April Challenge 2016
Chef and Ballons, Chef And Coloring
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
October Cook-Off 2016
ChefWatson uses Social Network, Watson asks Does Permutation Exist, Sherlock and the Ugly Flower
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
May Challenge 2018 Division 2
Mighty Friend, Dibs on Fibs, Xor Again, Minimum Deletions
October Challenge 2018 Division 2
Appy and Balloons , Minimize Digitsum, Chef and Surprise Chessboard, Chef and Serves, Byte to Bit
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