October Lunchtime 2019 Division 2
Box Game, Counting Inversions Revisited, Khaled in HIT
November Challenge 2019 Division 2
Chef and Minimum Colouring, (Challenge) Coloring Triangulations, Weapon Value, Single Point of Failure, From Zero to Infinity, Smallest Beautiful Number, Hard Sequence, Physical Exercise
November Lunchtime 2019 Division 1
Planting Trees, Washing Windows, Perfection
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Sticky Notes, Addition
South Korea