December Challenge 2018 Division 1
Colorblind Feast, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem, (Challenge) Delete DAG
November Challenge 2018 Division 2
Magician versus Chef 2, Chef and Happiness, Chef and Difficult Contests, Binary Strings, Chef, Primes and Trees (Challenge), Good Median, Appy Loves One, Chef and Ridges
October Lunchtime 2018 Division 2
Three Friends, Coloring the Grid, Weird Question
January Challenge 2019 Division 1
Yet Another Problem About Sequences, A Pizza Slice, (Challenge) Chef and Matching Game, Fancy Quotes, Chef and Modulo Game, Party, Distinct Pairs, Lucky Number Game, Partition the Graph, Different Neighbours
April Challenge 2019 Division 1
Offer for Chef, Kira Loves Palindromes, Mininum XOR over Tree, Playing with Numbers, Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing, Moving Rectangles (Challenge)
