September Challenge 2019 Division 2
Chef and Interesting Subsequences , Easy Fibonacci
October Challenge 2019 Division 2
Even Edges, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
January Challenge 2020 Division 2
Chef and Dynamo, Doraemon, Equality, Breaking Bricks
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes
December Challenge 2020 Division 2
Hail XOR, Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution
December Lunchtime 2020 Division 2 (Unrated)
Three Letters, Sed Sequences, Horoscope Matrix, One Zero Swaps
