April Challenge 2014
Shortest Path in Binary Trees, Divide the Tangerine, Chef and Digits, Cards, bags and coins, Farmer Feb, Counting Matrices, Sereja and Permutation
May Challenge 2014
Little Elephant and Balloons, Chef and Strange Matrix
June Challenge 2016
Chef and Rectangle Array, Chef and Array and K
November Challenge 2016
Friends Meeting, Gift and Chef
March Lunchtime 2021 Division 3
Lunchtime, Racing, Make the Sum Even, Dinner by Candlelight, Turn It, Motivation
April Lunchtime 2021 Division 2
A Special Tree, Chef in Heaven , Bench Press, Array Rotation
SnackDown 2021 - Online Qualifiers
Lucky Number, Maximum Number Of Distinct Elements
October Lunchtime 2021 Division 2
Chef and Water Car, Exactly N plus 1 Values, Tree Upshot, Median Rearrangement
SnackDown 2021 - Online Round 1A
Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Min Max LCM
January Cook-Off 2022 Division 2
Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility , Merged LIS, Prime Graph, Erase All But One
Poland