August Long Challenge 2017
Chef and Mover, Chef and Rainbow Array, Greedy Candidates, Palindromic Game
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
October Challenge 2017
Chef and Magic Arrays, Chef and a great voluntary Program, Chef and Cycled Cycles, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Villages and Tribes, Periodic Palindrome Construction, Chef Hates Palindromes, Chef goes Left Right Left
December Challenge 2017
Chef and Universe, Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Chef and Hamming Distance of arrays
August Cook-Off 2017
From heaven to earth, Real obtuse
February Challenge 2018
Broken Clock, Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
July Challenge 2018 Division 1
Reach Equilibrium, No Minimum No Maximum, Gears
India