December Challenge 2018 Division 1
Max and Electrical Panel, Colorblind Feast, Chef and Interactive XOR, Directing Edges, Edge Addition
November Challenge 2018 Division 2
Chef and Happiness, Chef and Difficult Contests, Binary Strings, Magician versus Chef 2, Chef, Primes and Trees (Challenge), Good Median, Appy Loves One, Chef and Ridges
October Challenge 2018 Division 2
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Chef and Serves, Byte to Bit, Chef and Circles
November Lunchtime 2018 Division 1
Beats and Pieces, Probability, Useful Number, Maximize It
December Lunchtime 2018 Division 1
Choosing from Buckets, Drawing Lines, Age Calculator
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, Party, A Pizza Slice
January Lunchtime 2019 Division 1
Distances, Mouse Meets Cheese, Rooks, Wanderer
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, Art of Balance, Maximize the Tax
