December Challenge 2018 Division 1
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, (Challenge) Delete DAG
November Challenge 2018 Division 1
Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Magician versus Chef 2
October Challenge 2018 Division 2
Beautiful Bricks, Chef and Circles, Byte to Bit, Chef and Serves, Chef and Surprise Chessboard, Minimize Digitsum, Appy and Balloons
October Lunchtime 2018 Division 1
Coloring the Grid, Weird Question
Encoder (Rated for Division 2)
Paint the Wall, Old Farmer, Knight Chess, Second Largest Element
February Challenge 2019 Division 1
Manhattan Rectangle, Guess It Right, Chef and Secret Ingredients, Art of Balance
February Cook-Off 2019 Division 1
Max Range Queries, Chef and Secret Password, Chef and Party
March Cook-Off 2019 Division 1
Markers and Caps, Music Shopping, XOR N-bonacci Sequence
March Lunchtime 2019 Division 1
Corrupted Seven-Segment Display
April Lunchtime 2019 Division 1
Firdavs and Planet F, Minimum Sum
May Cook-Off 2019 Division 1
Misha and Nice Sets, Expected Xor, Searching for a Biclique
August Lunchtime 2020 Division 1
Game on a Strip, Alien Invasion
Romania