August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Chef and a great voluntary Program, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Chef And his Cake, Chef and Hamming Distance of arrays, Penalty Shoot-out, Total Diamonds
December Cook-Off 2017
Beautiful Array, Football Match
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
Partition the numbers, String Merging, Rectangle, K-Concatenation, Maximum Score
February Challenge 2018
Broken Clock, Chef And His Characters, Chef And The Patents, Points Inside A Polygon, Car-pal Tunnel, (Challenge) Biased Committee, Permutation and Palindrome
March Cook-off 2018 Division 1
Chef Goes to the Cinema, Chef Restores a Matrix, Chef Judges a Competition
June Cook-Off 2018 Division 2
Good Permutations, Archi and Comparsion
July Cook-Off 2018 Division 2
Encoding Message, OR Matrix
May Challenge 2018 Division 2
S-T Mincut, Mighty Friend, Change the Signs, Minimum Deletions, Xor Again, Fake Binary Search, Dibs on Fibs
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