September Challenge 2018 Division 2
Sasha and Photos, Magician versus Chef, War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures, Table Game, Bad Shuffle, AND Square Subsegments
October Challenge 2018 Division 1
Chef and Surprise Chessboard, Distinct Rows in Submatrices, Minimize Digitsum, Beautiful Bricks, Appy and Balloons
August Lunchtime 2018 Division 2
Chef and Problem Setting, Chef and Eid, Mix Mix Game
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Partition the Graph, Distinct Pairs, Party, A Pizza Slice
