December 2009 (Contest XI)
Maze of Digits, Plant Location, Palindromic Numbers
March Challenge 2014
Team Split, Binary Tournament, Walk, Little Chef and Numbers, Mike and Stamps, A Story with Strings
April Challenge 2014
Counting Matrices, Shortest Path in Binary Trees, Divide the Tangerine, Chef and Digits, Cards, bags and coins, Farmer Feb
May Challenge 2014
Stone, Chef and Strange Matrix, Chef-jumping, Sereja and Game, Little Elephant and Balloons, Compilers and Parsers
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Chef and Strings, Let us play with rank list, Chef and Equality
April Challenge 2015
Chef and Piano Scales, Inversion sorting, Broken Telephone, Chef and Interview
May Challenge 2015
Chef and Prime Divisors, Set Difference , Chef and new recipe
November Challenge 2015
Eugene and function, Chef and cakes
January Long Challenge 2016
Sereja and Salesman, Rupsa and the Game, Churu and Balls, Cyclist Race, Chef and Time Machine, Devu and Perfume
