August Long Challenge 2017
Chef and Mover, Chef and Rainbow Array
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
October Cook-Off 2017
Chef and Employment Test, Chef and Weird Queries
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
Rectangle, K-Concatenation, Maximum Score
February Challenge 2018
Chef And His Characters, Chef And The Patents, Permutation and Palindrome
March Cook-off 2018 Division 2
Chef Goes to the Cinema, Chef Judges a Competition
April Challenge 2018 Division 2
Average of Pairs, Workers
September Challenge 2018 Division 2
Magician versus Chef, Chef and Adventures, War of XORs
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences
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