August Challenge 2018 Division 2
Problem Sort, Sheokand and Number, Spell Bob, Modular GCD
September Challenge 2018 Division 2
AND Square Subsegments, Magician versus Chef, War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures, Table Game, Bad Shuffle
October Challenge 2018 Division 1
Appy and Balloons , Chef and Surprise Chessboard, Minimize Digitsum, Beautiful Bricks
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Maximize the Tax
