December Challenge 2018 Division 2
(Challenge) Delete DAG, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem
November Challenge 2018 Division 2
Chef and Happiness, Chef and Difficult Contests, Chef and Ridges
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
Yet Another Problem About Sequences, A Pizza Slice, Distinct Pairs, Different Neighbours
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Art of Balance
May Challenge 2019 Division 1
Ada Rooks 2, Where to Build the Roads
May Lunchtime 2019 Division 1 (Unrated)
Grid Tour, Reverse Maximisation
June Challenge 2019 Division 1
Lent Money, Chef and Ingredients, Sum and GCD
July Challenge 2019 Division 1
Hit the Coconuts, Guess the Prime!, Circular Merging
India