June Challenge 2018 Division 2
Vision, Sheokand and String, Binary Shuffle, Naive Chef
July Challenge 2018 Division 2
No Minimum No Maximum, Magic Set, Strike or Spare, No Strings Attached
August Challenge 2018 Division 1
Coordinate Compression , Modular GCD, Interactive Matrix
September Challenge 2018 Division 1
AND Square Subsegments, Bad Shuffle, Table Game, Sasha and Photos
December Challenge 2018 Division 1
Colorblind Feast, Max and Electrical Panel, Directing Edges, Chef and Interactive XOR
October Challenge 2018 Division 1
Distinct Rows in Submatrices, Byte to Bit, Minimize Digitsum, Chef and Serves, Chef and Surprise Chessboard, Beautiful Bricks, Appy and Balloons , Coprime Components
June Lunchtime 2018 Division 2
Summary Power, Counting Pretty Numbers
October Lunchtime 2018 Division 1
Coloring the Grid, Weird Question
December Lunchtime 2018 Division 1
Drawing Lines, Age Calculator, Choosing from Buckets
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Xor Decomposition, Yet Another Tree Problem, (Challenge) Chef with Orchestra in the Kitchen, Art of Balance, Maximize the Tax
Vietnam