July Lunchtime 2019 Division 2
Easy Math, Delete a Subarray, Swapping, Two-lane Road, Equal Median
August Challenge 2019 Division 2
Guddu and his Mother, Encoding, Dilemma, Chef and Gordon Ramsay, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 1
Fuzzy Linear Combinations, Chef Designed a Network, Power Sum, Dodgers, Doofish Set, Expected GCD
November Challenge 2019 Division 1
D-Dart, (Challenge) Coloring Triangulations, Pretty Boxes, Winning Ways, From Zero to Infinity, Smallest Beautiful Number, Physical Exercise, Single Point of Failure
February Challenge 2020 Division 1
Polygon Chain, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Chef and Gordon Ramsay 2, Balancing Network Revisited, No Change Required, Expected Change, Chef and Railway Stations
May Challenge 2020 Division 1
Buying a New String, Triple Sort, Binary Land, Sorting Vases, Not a Real World Problem, Chef and Rainbow Road, Chef and Bitwise Product, (Challenge) Nanobots, Precise Pairing, Precise Bipartite Pairing
