February Challenge 2018
Chef And The Patents, Chef And His Characters, Permutation and Palindrome, Car-pal Tunnel
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
March Lunchtime 2018 Division 2 (Unrated)
Chef and Friends, Magic Elements
April Challenge 2018 Division 2
Highway Crossing, Workers, Count Good Prefixes
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again, Dibs on Fibs
June Challenge 2018 Division 2
Naive Chef, Binary Shuffle, Vision
July Challenge 2018 Division 2
Reach Equilibrium, Magic Set, Strike or Spare
August Challenge 2018 Division 2
Modular GCD, Problem Sort, Sheokand and Number, Spell Bob
January Challenge 2019 Division 2
Lucky Number Game, A Pizza Slice, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Different Neighbours
June Lunchtime 2019 Division 2
Ping Paja Pong, Magda and Silly Pairs
April Challenge 2020 Division 1
Strange Number, Squared Subsequences, Leaked Answers (Challenge)
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