October Challenge 2015
Who dares to be a millionaire, Count Subarrays
January Long Challenge 2016
Rupsa and the Game, Chef and Time Machine
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and digits of a number, Chef and calculation, JosephLand, Faded Palindromes, Dividing Machine, Chef and Friends
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
November Challenge 2016
Count Permutations, Task for Alexey, Gift and Chef
August Cook-Off 2016
Tweedle-Dee and Tweedle-Dum
April Challenge 2017
Chef and Divisor Tree, Bear and Clique Distances
October Challenge 2019 Division 2
Even Edges, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
November Challenge 2019 Division 2
From Zero to Infinity, Chef and Minimum Colouring
November Cook-Off 2019 Division 2
The Biggest Restaurant, Signature, Chef Diet
India