June Cook-off
Correctness of Knight Move
July 2011 Long Contest
Large Kitchen, Most Popular Friend
February 2012 Challenge
Lucky Count, Lucky Long, Word Couting, Count of Maximum
March 2012 Challenge
Spoon in Matrix, Home Delivery, Free Shuttle Service, Tom And Jerry
April Challenge 2012
PDS Number, Parallel Computing, Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight, Similar Graphs
June Challenge 2012
Arranging Cup-cakes, Little Elephant and Candies
August Challenge 2012
Little Elephant and Bombs, Range of Data
September Challenge 2012
Kisses & Hugs, Racing Horses, ChefTown Parade, Three is Crowd
October Challenge 2012
Fierce Battles, Event Organizer, Maximum Sub-rectangle in Matrix, The New Scheme
February 2013 Challenge
Buy1-Get1, Climbing Stairs
March Challenge 2013
Tourist Translations, Approximately, Fire Escape Routes, Minesweeper
April Challenge 2013
Little Elephant and Music, Barcelona Gameplay Tactics, ChefGame, Kingdom Unity, Fault Tolerance, Maximum Weight Difference, Levy Conjecture
India