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
September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
April Challenge 2018 Division 2
Average of Pairs, Workers, Count Good Prefixes, Weight of Numbers
May Challenge 2018 Division 2
Mighty Friend, Minimum Deletions, Xor Again, Dibs on Fibs
September Challenge 2018 Division 2
Magician versus Chef, War of XORs, Chef and Adventures, Table Game, Bad Shuffle
December Challenge 2018 Division 1
(Challenge) Delete DAG, Chef and Interactive XOR, Max and Electrical Panel, Directing Edges
October Challenge 2018 Division 2
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard, Chef and Serves, Byte to Bit, Chef and Circles
January Challenge 2019 Division 1
Partition the Graph, A Pizza Slice, (Challenge) Chef and Matching Game, Distinct Pairs, Different Neighbours, Yet Another Problem About Sequences
April Challenge 2019 Division 1
Offer for Chef, Kira Loves Palindromes, Playing with Numbers, Subtree Removal
September Challenge 2020 Division 1
Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix
