November Challenge 2018 Division 2
Appy Loves One, Chef and Ridges, Chef and Happiness, Chef and Difficult Contests, Magician versus Chef 2, Chef, Primes and Trees (Challenge), Good Median
October Challenge 2018 Division 2
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Chef and Serves, Byte to Bit, Chef and Circles
January Challenge 2019 Division 1
A Pizza Slice, (Challenge) Chef and Matching Game, Distinct Pairs, Different Neighbours, Yet Another Problem About Sequences, Partition the Graph
February Challenge 2019 Division 1
Maximize the Tax, Art of Balance, (Challenge) Chef with Orchestra in the Kitchen, Chef and Secret Ingredients, Guess It Right, Manhattan Rectangle
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Doofish Matrix, Equality, Chefina and Prefix Suffix Sums, English, Chefland Army, (Challenge) Building Anthills
Romania