November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Binary Strings, Chef and Difficult Contests, Chef and Happiness
October Lunchtime 2018 Division 2
Three Friends, Coloring the Grid, Weird Question
January Challenge 2019 Division 1
A Pizza Slice, (Challenge) Chef and Matching Game, Partition the Graph, Different Neighbours, Yet Another Problem About Sequences, Distinct Pairs
February Lunchtime 2019 Division 1
Roll the Bar, The Tricky Deal
March Challenge 2019 Division 1
Yet Again a Subarray Problem, (Challenge) Interleaving Strings, Matchable Permutations, Treasure Hunt, Cheating on Queue, Chef and Soccer
November Challenge 2019 Division 1
Physical Exercise, Smallest Beautiful Number, From Zero to Infinity, Single Point of Failure, (Challenge) Coloring Triangulations
September Challenge 2020 Division 1
Move the Coins - Creating Tests
