New : medium (twice the size of small puzzles, 7-15 cm) and large Puzzles (25-40 cm) now available!

    

THE (ALMOST) IMPOSSIBLE CUBE - It will stun everybody you know  

"A Puzzling Journey To The Reptiles And Related Animals"
"NUTTS And Other Crackers" 

"NEW MOSAICS" - new tiling challenges and their beautiful solutions (about 1000 diagrams!)

To read some or all of the book online and for content list click here. 

ACHTUNG! Jetzt auch als Ebook erhältlich! Kaufen/ Auszüge lesen:  Smashwords Verlag (alle Formate),  Amazon Verlag (Kindle)

Online Galleries:
   Gallery 1 :  Karl's small gallery (framed pictures): Room 1 Room 2  Room 3 Room 4  Room 5 Room 6  Room 7
   Gallery 2 :  Karl's Main Fractal Gallery  be amazed! (over 100 pictures; mirror at http://www.y23.com/fractal//)
   Gallery 3 :  Karl's large art gallery at the German art company "Kunst-Fuer-Alle"

Photos and infos:

•    Big German Newspaper prints one of Karl's Fractals
  
•    More Info on Public Exhibitions, Photos
•    Technical description of how fractals are produced 

 

My 600+ ZILLIONS games -  free download from here is back!

               (you need the inexpensive Zillions CD for that, which you can get here) 
        
  Free Mathematica "Demonstrations" and Gallery

• Convex Tilings (using congruent parts)
• A few difficult dissections
• NOWHERE-NEAT Tilings of the Plane 
  
• Square The Square  - a simple tiling problem, beautiful solutions, and two general theorems
• Square The Rectangle  - a simple tiling problem, over 1000 solutions, and two general theorems  
• Tetrads
  
• Triangulating the plane with mutually different regular triangles - impossibility theorem
  

• A-Maze
• Dissecting convex shapes into congruent parts
  
• Connect the dots
• Cryptic Crossword Puzzles
• Everyone should have a (check-) mate
• Globetrotter Maze
• Retro Chess Problems
• Straightjacket Chess World Record: What is the longest sequence of  forced moves in chess?
• The Quartercircle Heritage
• The Touching Planar Polycubes Problem
• Wireworld    (Zillions game Wireworld)
  
• Word & Math problems
• The Comet Tiling Problem
  

Miscellaneous

• About the inventor
• On inventors, inventions, tips and tricks
• House Insulation   Do something for the environment - insulate your house!
• Our Rainwater System! - installed parallel to city water, pays for itself in 10 years!
• Clean fun with my Kero 200 electric scooter - cheap to run and pollution free!
  
• IPP- The International Puzzle Party
• Scrabble
• Talks on tilings and math games at the University at Jena (Germany) 2006 : (German) (English)
  
• Zillions Art

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