December Challenge 2018 Division 1
Directing Edges, Chef and Interactive XOR, Max and Electrical Panel
November Challenge 2018 Division 2
Chef and Ridges, Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2, Chef and Difficult Contests, Chef and Happiness
October Challenge 2018 Division 2
Byte to Bit, Chef and Circles, Chef and Serves, Minimize Digitsum, Beautiful Bricks, Appy and Balloons , Chef and Surprise Chessboard
January Challenge 2019 Division 1
Yet Another Problem About Sequences, Different Neighbours, Distinct Pairs, A Pizza Slice
April Challenge 2019 Division 1
Mininum XOR over Tree, Subtree Removal, Playing with Numbers, Kira Loves Palindromes
August Challenge 2019 Division 1
Guddu and his Mother, Encoding, Dilemma, Maximize an Expression, Chef and Gordon Ramsay, Complement Spanning Trees
