January Challenge 2018
K-Concatenation, Partition the numbers, Rectangle, Maximum Score
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas
October Mega Cook-Off 2018 Division 2
Binary Nim 2, Ada and the Staircase, Pumping Water
November Cook-Off 2018 Division 1
Beautiful Garland, A-B Game
May Challenge 2018 Division 2
Dibs on Fibs, Minimum Deletions, Mighty Friend, Xor Again
June Challenge 2018 Division 2
Vision, Binary Shuffle, Naive Chef
July Challenge 2018 Division 2
Strike or Spare, No Strings Attached, Magic Set, No Minimum No Maximum, Reach Equilibrium
November Challenge 2018 Division 1
Appy Loves One, Good Median, Magician versus Chef 2
September Lunchtime 2018 Division 2
Judging Delay, Opposite Cites, Chef Restaurant
India