March Challenge 2016
maximize the sum, Chef And Special Dishes, Palindromic substrings
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
September Challenge 2016
Chef and digits of a number, Chef and calculation, Faded Palindromes
October Challenge 2016
Chef and Keyboard, Chef and Three Dogs
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
October Cook-Off 2016
ChefWatson uses Social Network, Watson asks Does Permutation Exist
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
August Challenge 2018 Division 2
Modular GCD, Problem Sort, Sheokand and Number, Spell Bob
ProCon 2018 (Rated for all)
The Great Run, Kill them with your success
April Challenge 2020 Division 2
Sell All the Cars, COVID Pandemic and Long Queue
India