November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Chef and Difficult Contests, Chef and Happiness
Encoder (Rated for Division 2)
Knight Chess, Paint the Wall
December Lunchtime 2018 Division 1
Choosing from Buckets, Age Calculator
December Lunchtime 2019 Division 1
The Evil Professor, Guess the number
January Challenge 2021 Division 1
Chef and Division 3, Encoded String
Vietnam