September Challenge 2018 Division 2
AND Square Subsegments, Magician versus Chef, War of XORs, Chef and Condition Zero (Challenge), Chef and Adventures, Table Game, Bad Shuffle
October Challenge 2018 Division 2
Chef and Circles, Byte to Bit, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum, Appy and Balloons
September Challenge 2019 Division 1
Biladerim Icin, Fuzzy Linear Combinations, Expected GCD, Doofish Set, Chef Designed a Network
October Challenge 2019 Division 1
Queries on Matrix, Even Edges, Bacterial Reproduction, Chef and Maximum Star Value, Array Modification, (Challenge) Maximizing LIS, Faulty System
Cape Verde