September Challenge 2019 Division 2
Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences , Chef and Good Subsequences
October Challenge 2019 Division 2
Phone Prices, Operations on a Matrix, Array Modification, Chef and Maximum Star Value, Missing Number, Even Edges
November Challenge 2019 Division 1
Hard Sequence, Weapon Value
December Challenge 2019 Division 2
That Is My Score!, Addition, Sticky Notes, Binary XOR, Plus Multiply, Chefina and Ranges, Easy Subsequence Selection
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Equality, Chefina and Prefix Suffix Sums, English, Breaking Bricks
February Challenge 2020 Division 1
No Change Required, Long Contest and Cook Off Overlaps, (Challenge) Raisins, Hard Cash, School of Geometry, The Theatre Problem, Chef and Railway Stations
March Challenge 2020 Division 1
XOR Engine, Ada Bishop 2, Pintu and Fruits
ENIGMA - PLINTH'20 LNMIIT (Rated for all)
Minion AND Range, Recruit Villagers
India