September Challenge 2012
Chef World, Racing Horses, Three is Crowd, Kisses & Hugs
December Challenge 2012
Granama Recipes, The Uncountable Ways, Pizza Delivery
April Challenge 2013
Maximum Weight Difference, Levy Conjecture, Barcelona Gameplay Tactics, Little Elephant and Music
November Challenge 2013
Superpowers of 2, Yet Another Cute Girl, Uncle Johny, Square Digit Squares, Missing some chairs
March Challenge 2014
Mike and Stamps, Little Chef and Numbers, Maximum number, GCD condition, Binary Tournament, Team Split, Sereja and Sorting 2, Walk
April Challenge 2014
Counting Matrices, Farmer Feb, Cards, bags and coins, Chef and Digits, Divide the Tangerine, Shortest Path in Binary Trees
April Challenge 2015
Broken Telephone, Chef and Piano Scales, Chef and Interview, Count Sequences
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
January Challenge 2021 Division 2
Chef and Ants, Expected Number of SCCs, Watching CPL, Fair Elections
