June Challenge 2013
To challenge or not, Lapindromes, Predictopus
July Challenge 2013
Chef and Walking on the rectangle
August Challenge 2013
Little Elephant and Lemonade, Hello Hello, Deleting numbers, Splitting Candies
October Challenge 2013
Little Elephant and Bamboo, Helping Lira, Maxim and Dividers
November Challenge 2013
Yet Another Cute Girl, Missing some chairs, Square Digit Squares, Uncle Johny, Sereja and Vectors, Superpowers of 2
December Challenge 2013
Art in Digital Age, Chef and Codes, Funny Marbles, Magic Pairs, Reign, Rectangular Queries
January Challenge 2014
Sereja and Graph, Bon Appetit, Please like me, Chef and Feedback, Magic Trick
February Challenge 2014
Draughts, Make Him Happy, Longest Common Pattern, Little Elephant and Subarrays, Colored Array
March Challenge 2014
Little Chef and Numbers, Walk, Team Split
April Challenge 2014
Counting Matrices, Farmer Feb, Chef and Digits, Shortest Path in Binary Trees
June Challenge 2014
Chef and Subarray, Guessing Game
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
October Challenge 2020 Division 2
Covid Run, Chef and Easy Queries
Netherlands