May Cook-off 2011
Socializing Game around Pizza, Packing the Golden Triangles, Distribute idlis Equally, Popular Rice Recipe
August Long Contest 2011
Coloring in Hypercube, Infinite Grid Game
August Cook-off 2011
Angry Chef - Crispy Chips, Collect the Chocolate Chips, Rotate the String, Open the Dragon Scroll, Vote for the Noodle Soup
October Long Contest 2011
Dish Distribution, The Great Plain, The Baking Business, Repeated String, Lucky Palin
November Long Contest 2011
Chefs new Pet, The Postal Service, New Restaurant
June Challenge 2014
Little Elephant and Blocks, Maxim and Progressions, Chef and Functions, Chef and Digit Jumps, Chef and Subarray, Two Companies, Guessing Game, Forgot Password
July Challenge 2014
Game of Numbers, Garden Game, Lucky Game, Dish Owner, Reach The Point, Chef and Rectangle Genome, Sereja and Equality, Chef and Frogs, Little Elephant and Painting, Count Substrings
December Challenge 2017
Penalty Shoot-out, Chef and Hamming Distance of arrays, Red and blue points, Chef And Easy Xor Queries, Chef, Leonardo And Queries, Chef And his Cake, Santa Delivering Problem, Total Diamonds, Chef and Universe, Chef and Direction
January Challenge 2018
(Challenge) Chef and Palindromes, A humongous Query, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
February Challenge 2018
Chef And Land Labeling, (Challenge) Biased Committee
November Challenge 2018 Division 1
Chef, Primes and Trees (Challenge)
Georgia