April Challenge 2017
Stable market, Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes, Chef and Divisor Tree
May Challenge 2017
Median of adjacent maximum numbers, Chef and Subsequences, Blocked websites, Courses in an university, Chef and his daily routine, Chef and Sub Array
July Challenge 2017
Chef and Sign Sequences, Pishty and tree, Tree Expectancy, Whats in the Name, Calculator , IPC Trainers, Two Coins
August Long Challenge 2017
Strings and Graphs, Greedy Candidates, Chef and Mover, Chef and Rainbow Array, Palindromic Game
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Weasel does Xor on Tree, Fill The Matrix, Little Chef and Sums
January Challenge 2018
Rectangle, Partition the numbers, String Merging, Maximum Score, K-Concatenation
May Challenge 2018 Division 1
S-T Mincut, Change the Signs, Fake Binary Search, Dibs on Fibs
Biteration #2 (Rated for Division 2)
A - Books, E - Guess the Number, B - Candy Love, C - Chef and Maths
India