August Challenge 2018 Division 2
Modular GCD, Problem Sort, Lonely Cycles, Sheokand and Number, Spell Bob, Coordinate Compression
September Challenge 2018 Division 2
Table Game, Bad Shuffle, Chef and Adventures, Chef and Condition Zero (Challenge), War of XORs, Magician versus Chef, Sasha and Photos, AND Square Subsegments
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Art of Balance, Maximize the Tax
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Codechef War, LOVEMUFFIN, Circular Merging
India