March 2012 Challenge
Free Shuttle Service, Home Delivery, Spoon in Matrix
April Challenge 2012
Parallel Computing, Fit to Play, Double Strings, Stacking Pancakes, Greatest Dumpling Fight, Similar Graphs
June Challenge 2012
Little Elephant and Candies
July Challenge 2012
Chef's Dream, My Fair Coins, Gift Rift
October Challenge 2012
Little Elephant and Order, Fierce Battles, Event Organizer, The New Scheme, Need More Diamonds
September Cook-Off 2012
Recipe Reconstruction, Carvans
March Cook-off 2013
The Ball And Cups, Palindrome
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
