November Long Contest 2011
New Restaurant, Chefs new Pet, Stepping Average, The Postal Service
April Challenge 2012
Parallel Computing, Double Strings
September Challenge 2012
Lights, Kisses & Hugs, Chef World, Racing Horses, Queries About Numbers, ChefTown Parade, Three is Crowd
January Challenge 2013
Little Elephant and Alcohol, Three Different Numbers, Chef of the Year, End Of The World, The Minimum Number Of Moves, Hotel Balifornia, Dividing Products, A New Door
February 2013 Challenge
Word Play, Observing the Tree, Vacation, Triangular Queries, Magic Board, Buy1-Get1, Little Elephant and Cards, Climbing Stairs
January Challenge 2018
Partition the numbers, String Merging, Rectangle, Maximum Score, K-Concatenation, Killjee and k-th letter , Simplify the Square Root, A humongous Query, Killing Monsters
April Challenge 2019 Division 1
Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Subtree Removal
November Challenge 2019 Division 1
Physical Exercise, Smallest Beautiful Number, From Zero to Infinity, Single Point of Failure, Winning Ways, Pretty Boxes
United States