March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Coloring
September Challenge 2016
Chef and digits of a number, Faded Palindromes
October Challenge 2020 Division 2
Replace for X, Chef and Easy Queries, Covid Run, Positive AND
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes, Iron, Magnet and Wall
December Challenge 2020 Division 2
Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution
December Cook-Off 2020 Division 2
Catch the Thief, Minimum Attendance Requirement
