January Challenge 2017
Cats and Dogs, Sereja and BOX, Chef and Circle, Fantastic Four, Digits Cannot Separate, Reservior, Tourists in Mancunia, Capital Movement
February Challenge 2017
Chef and His Apartment Dues, Gerrymander, Most Frequent Element, Chef and his Best Friend, Chef and Triangles, Interval Game, Primitive Queries, Eugene and big number, Chef and Yoda, Sereja and Inversions
April Challenge 2017
Heavy-Light Decomposition, Similar Dishes, Bear and Clique Distances, Bear and Row 01, Dish Of Life, Stable market, Chef and Divisor Tree, Bear and Random Grid, Chef and Digits
November Challenge 2018 Division 1
Appy Loves One, Good Median, Magician versus Chef 2, Binary Strings
China