September Lunchtime 2019 Division 2
Chef Feeds Cats, Chef and Football Match
October Challenge 2019 Division 2
Missing Number, Chef and Maximum Star Value, Array Modification, Operations on a Matrix, Phone Prices
January Challenge 2020 Division 2
Breaking Bricks, Equality, Doraemon, Chef and Dynamo
February Challenge 2020 Division 2
No Change Required, The Theatre Problem, School of Geometry, Hard Cash, Long Contest and Cook Off Overlaps
June Challenge 2020 Division 2
Chef and Price Control, Chef and String, Operations on a Tuple, The Tom and Jerry Game!, Even Matrix, Chef and Icecream
July Challenge 2020 Division 1
LCM Constraints, Chefina and Swaps, Chef and Dragon Dens, Missing a Point, Doctor Chef
August Challenge 2020 Division 1
Subsequence Frequency Counting, Chef and Wedding Arrangements, Smallest KMP, Insanely Hard School Exams
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Rotate the Polyline, Divide Candies, Ada Matrix
India