February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Gerrymander
March Challenge 2017
Cooking Schedule, Xenny and Alternating Tasks, Bear and Extra Number, (CH) Bear and Sorted Rows, Bandwidth of a matrix
April Challenge 2017
Bear and Row 01, Similar Dishes, Bear and Clique Distances, Dish Of Life, Stable market, Chef and Divisor Tree
June Challenge 2017
Chef and Prime Queries, Euler Sum, A Good Set, Cloning, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
Calculator , Two Coins, IPC Trainers, Servers (Challenge), Tree Expectancy, Whats in the Name, Chef and Sign Sequences, Pishty and tree
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
September Lunchtime 2017
Chef and Dice, Chef and Cook-Off Contests
April Challenge 2018 Division 1
Chef and Array (Challenge), Cutting Plants, Highway Crossing, Chef and Same Old Recurrence, Count Good Prefixes, Chef and Same Old Recurrence 2
May Challenge 2018 Division 2
Dibs on Fibs, Fake Binary Search, Minimum Deletions, Xor Again, Change the Signs, Mighty Friend
June Challenge 2018 Division 2
Two Flowers, Vision, Sheokand and String, Binary Shuffle, Naive Chef
October Challenge 2018 Division 2
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Chef and Serves, Byte to Bit, Chef and Circles
India