October Mega Cook-Off 2018 Division 2
Ada and the Staircase, Binary Nim 2, Pumping Water
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures
October Challenge 2018 Division 2
Byte to Bit, Chef and Circles, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum, Beautiful Bricks, Appy and Balloons
January Challenge 2019 Division 1
Different Neighbours, Distinct Pairs, A Pizza Slice
May Challenge 2019 Division 2
Where to Build the Roads, Matches, Ada Rooks 2, Reduce to One
June Challenge 2019 Division 1
Chef and Ingredients, Sum and GCD
August Challenge 2019 Division 1
Zombie and the Caves, Distribute Apples, Football, Maximize an Expression, Dilemma, Guddu and his Mother
January Challenge 2020 Division 1
Chef and Dynamo, Doraemon, Doofish Matrix, Chefina and Prefix Suffix Sums, English, Chefland Army
August Challenge 2020 Division 1
Smallest KMP, Chef and Wedding Arrangements
India