January Challenge 2019 Division 2
Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes, Yet Another Problem About Sequences
February Challenge 2019 Division 2
Deputy Chef, Art of Balance, Appy and Contest, Chef and Magical Jars, Guess It Right, Manhattan Rectangle, Chef and Secret Ingredients
April Challenge 2019 Division 2
Fencing, Subtree Removal, Maximum Remaining, Friend or Girlfriend, Playing with Numbers
June Challenge 2019 Division 1
Lent Money, Chef and Ingredients, Sum and GCD
August Challenge 2019 Division 1
Zombie and the Caves, Distribute Apples, Football, Dilemma, Encoding, Guddu and his Mother, Maximize an Expression
December Challenge 2019 Division 1
Chefina and Ranges, Binary XOR, Sticky Notes, Addition
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Chefina and Prefix Suffix Sums
April Challenge 2020 Division 1
Ready Bitwise, Leaked Answers (Challenge), Squared Subsequences, Strange Number
March Lunchtime 2020 Division 1 (Unrated)
Maximize LCM, Strip in a Tree!
Exun Programming Prelims 2019 (Rated for all)
Weird Modulo Problem , Tennis Tournament, Chipped Tree, Yet Another Partition Problem
August Challenge 2020 Division 1
Subsequence Frequency Counting, Smallest KMP, Chef and Wedding Arrangements
RECode 12.0 (Rated for all)
Chef and String, Chef and Walk, Chef and Rotation, Chef and Numbers
India