January Long Challenge 2016
Chef and Inflation, Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume, Sereja and Salesman
February Challenge 2016
Sereja and Two Lines, Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective
August Long Challenge 2017
Chef and Mover, Strings and Graphs, Greedy Candidates, Palindromic Game, Chef And Fibonacci Array, Chef and Rainbow Array
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Shooting on the array, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
May Lunchtime 2022 Division 1 (Rated)
Balanced 0-1 Tree, Equal After And
