April Challenge 2017
Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes, Chef and Divisor Tree
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
A Good Set, Xenny and Coin Rankings
September Cook-Off 2017
Subsequence Equality, Statistics Construction
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
March Challenge 2018 DIV 1
Pishty and Triangles, Chef and Easy Problem, Mix the Colors, Minions and Voting
March Lunchtime 2018 Division 1 (Unrated)
Chef and Friends, Three Integers, Magic Elements
India