March Challenge 2018 DIV 2
Chef and Interval Painting, Pishty and Triangles, Embedding a Tree (Challenge), Minion Chef and Bananas, Minions and Voting, Chef and Glove, A Big Sale, Chef and Gcd Queries, Chef and Easy Problem, Chef Cuts Tree, Mix the Colors
April Challenge 2018 Division 2
Average of Pairs, Workers, Count Good Prefixes, Highway Crossing, Weight of Numbers, Cutting Plants, Vaibhav and Ministers, Chef and Array (Challenge)
June Challenge 2018 Division 1
Two Flowers, Vision, Ways to Work, Expected Buildings, Archi and Tree, Binary Board
September Challenge 2018 Division 1
Bad Shuffle, Table Game, Factorize, Chef and Condition Zero (Challenge), Sasha and Photos, Selinas the Chefs Falling on the Tree, AND Square Subsegments, Chef and Lost Story
November Challenge 2018 Division 1
Chef and Recipes, Chef and Equations, Max-digit Tree, Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Binary Strings
October Challenge 2018 Division 1
Minimize Digitsum, Distinct Rows in Submatrices, Coprime Components, Chef and Surprise Chessboard, Beautiful Bricks, Appy and Balloons , Walk on Tree
Replay of Indian IOITC 2018 #2 (Rated)
Exact Walks, Coin Denominations, Changing Numbers
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Maximize the Tax
China