April Challenge 2019 Division 2
Mininum XOR over Tree, Playing with Numbers, Friend or Girlfriend, Maximum Remaining, Subtree Removal, Fencing, Moving Rectangles (Challenge), Kira Loves Palindromes
May Challenge 2019 Division 2
Matches, Ada Pawns, Where to Build the Roads, Reduce to One, Trees and Degrees, Binary Movements, Ada Rooks 2, (Challenge) Chef Exchange
June Challenge 2019 Division 1
Lent Money, Count Arrays, Chef and Ingredients, Intersecting Paths, Sum and GCD, Forgotten Tree 9, (Challenge) SnackDown 99
