October Challenge 2019 Division 2
Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices, Even Edges
November Challenge 2019 Division 2
From Zero to Infinity, (Challenge) Coloring Triangulations, Chef and Minimum Colouring, Weapon Value, Single Point of Failure, Smallest Beautiful Number, Hard Sequence, Physical Exercise
July Challenge 2020 Division 1
Chefina and Swaps, Doctor Chef, Missing a Point
September Challenge 2020 Division 2
Chefina and Swap, A Problem on Sticks, Chef and Trump Cards, Find XOR, Rotate the Polyline, Divide Candies, Ada Matrix, Coronavirus Spread 2
May Challenge 2021 Division 2 (Rated)
Tree House, An Interesting Sequence, Xor Equality, Tic Tac Toe, Modular Equation
