June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets, Chef and Prime Queries
July Challenge 2017
IPC Trainers, Calculator , Whats in the Name, Chef and Sign Sequences
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
April Challenge 2018 Division 1
Cutting Plants, Count Good Prefixes, Highway Crossing
June Challenge 2018 Division 2
Two Flowers, Vision, Ways to Work, Sheokand and String, Binary Shuffle, Naive Chef
October Challenge 2018 Division 2
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, (Challenge) Chef and Takonemo, Chef and Serves, Byte to Bit, Chef and Circles
India