February Challenge 2014
Draughts, Make It Zero, Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Colored Array, Make It Zero 2, Little Elephant and Movies
March Challenge 2014
Little Chef and Numbers, Chef and Graph Queries, A Story with Strings, Mike and Stamps, Maximum number, GCD condition, Walk, Binary Tournament, Team Split, Sereja and Sorting 2
May Challenge 2014
Little Elephant and Balloons, Compilers and Parsers, Chef-jumping, Chef and Strange Matrix, Stone
June Challenge 2014
Guessing Game, Forgot Password, Two Companies, Chef and Subarray, Chef and Functions, Maxim and Progressions, Little Elephant and Blocks, Chef and Digit Jumps
July Challenge 2014
Little Elephant and Painting, Garden Game, Chef and Frogs, Count Substrings, Reach The Point, Dish Owner
August Challenge 2014
Cleaning Tables, Chef and Gift, Earthquake, Chef and Reversing, Little Elephant and T-Shirts, Mountain Holidays 2, The Leaking Robot
October Challenge 2014
Children Trips, DevuLand, Dinosaurs and Laddus, Magical Girl and Colored Liquid Potions, Stringology is Magic, Chef and Square, Chef and Painting, Chef and Ground, Sereja and two strings, Remy paints the fence
July Challenge 2016
Andrash and Stipendium, Chef and Segments, Chef and Tetris, Chef and Robots Competition, Chefland and Electricity
China