Peter Grabarchuk Puzzle Designer
Web        
  Puzzles.COM
Triangle in Addition
Sphere Between Cubes
  Age of Puzzles
The Five Hearts Puzzle
  Maths Is Fun
Four Cubes Outlines
  UniPuzzle
Cubic Triangle Views
Stained Glass Unicursals
The Four Hearts Puzzle
  PuzzlersParadise
Triangles in the Embroidery
Puzzlers Paradise Palm Tree
  Smart-Kit
   
  Math Puzzle
Four Queens and Two Bishops
Christmas Tree & Checkerboard
         
Peter Puzzle
Find at this website puzzle projects by Peter Grabarchuk, including puzzle products, books and publications, web puzzles, and other puzzle activities.