March Challenge 2017
Bear and Extra Number, Xenny and Alternating Tasks, Bandwidth of a matrix
April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Pairwise union of sets
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Sereja and Commands, Little Chef and Sums, Fill The Matrix, Minimum Good Permutation, Chef and Pick Digit
December Challenge 2017
Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Chef and Hamming Distance of arrays
August Cook-Off 2017
Real obtuse, From heaven to earth
September Cook-Off 2017
Subsequence Equality, Statistics Construction
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
Rectangle, Partition the numbers, String Merging, Maximum Score, K-Concatenation, (Challenge) Chef and Palindromes
January Lunchtime 2018
Chef and Game with Sequence, Chef and Escaping from the Labyrinth
February Challenge 2018
Chef And The Patents, Permutation and Palindrome, (Challenge) Biased Committee, Car-pal Tunnel, Points Inside A Polygon, Akanksha and End of Semester, Chef And His Characters
May Challenge 2018 Division 1
S-T Mincut, Minimum Deletions, Fake Binary Search, Dibs on Fibs
Insomnia 2018 (Rated)
Split Sums, Strange Swaps
India