September Challenge 2018 Division 2
War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures, Bad Shuffle, Magician versus Chef
July Lunchtime 2018 Division 2
Split Stones, Forced Particles
August Lunchtime 2018 Division 2
Chef and Eid, Mix Mix Game, Chef and Problem Setting
February Challenge 2019 Division 1
Manhattan Rectangle, Chef and Secret Ingredients, Art of Balance
February Cook-Off 2019 Division 2
Max Range Queries, Chef and Secret Password, Buying New Tablet, Chef and Party
Russia