July Challenge 2013
Chef and Walking on the rectangle
December Challenge 2018 Division 2
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, Chef and Interactive Contests, Chef and An Ideal Problem
October Challenge 2018 Division 2
Byte to Bit, Chef and Circles, Chef and Serves, Chef and Surprise Chessboard, Appy and Balloons
December Lunchtime 2018 Division 2
Print Pattern, Choosing from Buckets, Drawing Lines, Age Calculator
January Lunchtime 2019 Division 1
Distances, Wanderer, Rooks, Mouse Meets Cheese
