July 2011 Long Contest
Large Kitchen, Most Popular Friend, A-E Hash Function
September Long Contest
Younger Brother, BIT Magazine
February 2012 Challenge
Lucky Long, Smart Chef vs Evil Chef, Word Couting, Count of Maximum
March 2012 Challenge
Free Shuttle Service, Home Delivery, Spoon in Matrix
April Challenge 2012
Greatest Dumpling Fight, Double Strings, Stacking Pancakes, Fit to Play
May Challenge 2012
Jewels and Stones, Lucky lucky number, Remember the recipe, A Home for Chef
September Challenge 2012
Kisses & Hugs, Racing Horses, ChefTown Parade
December Challenge 2018 Division 2
(Challenge) Delete DAG, Max and Electrical Panel, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem
