November Challenge 2014
Distinct Characters Subsequence
February Challenge 2015
Let us play with rank list, Chef and Equality, Chef and Chain
April Challenge 2015
Chef and Interview, Broken Telephone, Chef and Piano Scales
August Challenge 2015
Aditi and Magic Trick, Cooking Machine, Gravity Guy, Way Out
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
September Mega Cook-Off 2015
Forgotten Language, Stacks
March Challenge 2016
Chef And Special Dishes, Palindromic substrings, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
July Challenge 2016
Andrash and Stipendium, Chef and Tetris, Chefland and Electricity
August Challenge 2016
Chef and Circle Run, Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and calculation, Faded Palindromes, Chef and digits of a number
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
April Challenge 2020 Division 2
Sell All the Cars, COVID Pandemic and Long Queue
India