November Challenge 2016
Friends Meeting, Count Permutations, Task for Alexey, Chef and squares, Urban Development, Gift and Chef
December Lunchtime 2016
Superheroes and villains, Fly height mode
July Challenge 2017
Calculator , IPC Trainers, Whats in the Name, Pishty and tree, Chef and Sign Sequences
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
April Lunchtime 2017
Bear and Segments, Bear and Segment 01
January Challenge 2018
K-Concatenation, Maximum Score, Rectangle
March Challenge 2018 DIV 2
Minions and Voting, Minion Chef and Bananas, Chef and Glove, Mix the Colors, A Big Sale, Chef and Easy Problem, Pishty and Triangles
July Challenge 2018 Division 2
No Minimum No Maximum, Magic Set, Strike or Spare, No Strings Attached
September Lunchtime 2019 Division 1
All Substrings, Ice Cream Queue, Treeversion, Find the Sum
Ukraine