September Challenge 2017
Chef and Pick Digit, Sereja and Commands, Little Chef and Sums, Fill The Matrix, Minimum Good Permutation
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Max Mex, Counter Test For CHEFSUM, A Balanced Contest, (Challenge) Connecting computers
September Cook-Off 2017
Statistics Construction, Subsequence Equality
September Lunchtime 2017
Chef and Cook-Off Contests
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
July Challenge 2018 Division 1
Tom and Jerry, Reach Equilibrium
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
September Lunchtime 2018 Division 2
Judging Delay, Chef Restaurant
October Lunchtime 2018 Division 1
Coloring the Grid, Weird Question
ProCon Junior (Rated for Division 2)
Chef and Secret Ingredient, Chef and Bored Games, Chef and Polygon Cakes, Chef and Cookies, Chef and Sorting
India