This page is dedicated to our friends from the associative and co-operative world: teachers, writers, artists, designers, inventors, scientists, and politicians, who contribute in a significant manner to the cultural enhancement of their communities and/or to the development, promotion and diffusion of art, science and technology.
 

The Grabarchuk Family Puzzle Group
  It is a Ukrainian puzzle group (www.GrabarchukPuzzles.com) which actively creates, develops, and promotes new puzzles and puzzle concepts. Its members participate in all main puzzle events and gatherings all over the World. Their latest puzzle projects are for the iPhone/iPod touch. One of them is Strimko, a logic puzzle with numbers (www.strimko.com/iphone); another one is LetsTans, delivering totally new experience of the captivating Tangram's spirit (www.letstans.com). They are developed in cooperation with several creative programming groups from all around the Word.
The Grabarchuk Family Puzzle Group includes one of the World's most renowned puzzle creators and solvers which make a big puzzle family: Serhiy (b.1958) and his wife Tanya (b.1956); their elder son, Serhiy Jr. (b.1980) and his wife Kate (b.1981); and their younger son Peter (b.1985) and his fiancee, Helen (b.1985). The Grabarchuk Family Puzzle Group has its place of business in Uzhgorod, a town in the Western part of Ukraine. More details about some members of The Grabarchuk Family are presented below:

Serhiy Grabarchuk
  Serhiy Grabarchuk is a metagrobologist -- the one whose life interest is puzzles and puzzling. He has more than 40-year experience in the puzzle field in all of its directions and levels, forms and aspects -- creating, designing, solving, producing, collecting, researching, writing, publishing, etc. He created several thousand different puzzles, discovered several new puzzle principles, and made many strong improvements of different solutions, old and new. More than a thousand his original puzzles have been published in more than a dozen printed collections, in different books and periodicals all around the World, including many websites, and produced by many Word's renowned puzzle companies.
Serhiy collaborates with all most prominent puzzle folks -- designers, mathematicians, and magicians from all over the World. For almost three years he has run the Puzzles.COM website (www.puzzles.com). Since August of 2005 he runs a wide puzzle-book-web project entitled Age of Puzzles (www.ageofpuzzles.com). He holds five puzzle patents, and won prizes in several prestigious puzzle design competitions all across the World.
Serhiy has a big puzzle collection (more than 2000 items); a comprehensive puzzle library; and a good collection of different games, tricks, and illusions. Serhiy's teachers and favorite creators are Martin Gardner, M.C.Escher, Leonardo da Vinci, and George Gershwin. He studied at Kyiv Polytechnic Institute, and earned a degree in Instruments of Fine Mechanics. Then he worked in several industrial design offices as an engineer-designer. From 1981 Serhiy works as a professional puzzle designer and writer.

Serhiy Grabarchuk, Jr.
  Serhiy Grabarchuk Jr. is the founder of UniPuzzle.com (www.unipuzzle.com), co-author of The Simple Book of Not-So-Simple Puzzles book, and a co-creator of the Strimko puzzle (www.strimko.com). Since 2003, he runs the Puzzles.COM website (www.puzzles.com), and cooperates on more puzzle projects with ThinkFun, Inc. (formerly, Binary Arts Corp.).
He is actively involved in puzzle projects such as inventing and designing puzzles, puzzle web-building and programming, and recently pursued a puzzle journalistic genre. He earned his B.A. and M.A. in Economics from Uzhgorod National University. In his spare time works on the Ph.D. thesis in Economics.

Peter Grabarchuk
  Peter Grabarchuk is an experienced puzzle creator, who for ten years is closely working with ThinkFun, Inc. on different puzzle projects. For many years he is the Art-Director for the Puzzles.COM website (www.puzzles.com). More you can see at his personal website (www.peterpuzzle.com).
During more than a decade of puzzling in many different forms, he has created hundreds of different original puzzles with clever and elegant ideas and in an appealing modern style. His puzzles are widely published on the Web, and different magazines and books. His latest book is Modern Classic Puzzles, and he is a co-author of The Simple Book of Not-So-Simple Puzzles book. Peter is a co-creator of the Strimko puzzle (www.strimko.com). He earned his B.A. and M.A. in Economics from Uzhgorod National University.

  David Macdonald is an Englishman married to an Austrian living in Brussels. He views himself as a European and between them his family speaks five languages.

  A liberal education in the arts, mathematics and engineering drawing led to a spell as a model maker for architects, gaining an in depth knowledge of formal perspective. A career spanning forty six years as a Director of Photography for cinema and television has led to an instinctive feel for light and shade and their manipulation to create mood and atmosphere. He discovered Photoshop late in life, already in his mid fifties, and started to experiment with it and other computer graphic applications. He is entirely self taught. A long time lover of logic, paradox and illusion, all the influences of his former experience came to together naturally to start creating illusions of perspective and impossible geometry photographically using computer technology.

  After initial pencil sketches to work out ideas, his work starts with a formal construction in 2D drawn in the computer. This is printed and used as a “matrix’ or template for the taking of photographs, often as many as several hundred, designed to fit the required viewpoint and perspective. These are then assembled in Photoshop, sometimes together with elements created in 3D, and his knowledge of lighting is used to “paint” the image to unify all the different elements and give them atmosphere. An image can take anything from a few weeks to many, many months to create. Although a computer is used to create these combinations, he prefers to work “by hand” using as little automated processes and effects as possible.
His greatest influences are Martin Gardner, M. C. Escher, Oscar Reutersvärd, Jos de Mey, and the 16th Century Hans Vredeman de Vries - not necessarily in that order.

  His work, together with a demonstration of how he creates his images, may be found on www.cambiguities.com where he can also be contacted.

  Vicente MEAVILLA SEGUÍ was born in Mahón (Spain) on April 26, 1949. He is married with two children and has a Bachelor’s Degree in Science (Mathematics) from the University of Zaragoza (Spain) and a Doctorate Degree in Arts (Pedagogy) from the Autonomous University of Barcelona (Spain).
At the moment, he is a Senior Professor of Maths at "Francés de Aranda" High School in Teruel (Spain) and an Associate Professor in the Maths Department at the University of Zaragoza.

Work Outline: Teaching and Learning of Mathematics.
• Research on the influence of social interactions for the learning of school algebra.
• The history of mathematics as a didactic resource.

Publications
  Meavilla Seguí is the author of several books about themes of the History of Mathematics, Discrete Mathematics, and Mathematics & Art. He has also written numerous articles about the teaching and learning of Maths and has given communications and reports on the same subject in national and international conferences. At the end of 2004 his book "Figuras Imposibles. Geometría para heterodoxos" was published by Proyectosur publications (http://www.proyectosur.com).

Drawing and Painting
  His style may be set in a surrealistic framework. His technique is pointillistic: he uses actually felt-tip pens to colour his compositions. The subject of his work is centred mainly on the impossible figures (you can see reproductions of many of his artworks at http://im-possible.info/english/art/vicente/index.html).

  István Orosz (1951) is a graphic artist and an animated film maker. As a graphic designer, he graduated at the Hungarian University of Arts and Design in Budapest in 1975. After graduation he began to deal with theatre as a stage designer and animated film as an animator and film director Later when poster came to the centre of his interest he made mainly theatre, movie and exhibition posters.

  His individual graphic works of art are often related to postmodernism by archaic forms, art historical references, stylistic quotations and playful self-reflection. Themes of the natural sciences, especially of geometry and optics appear in most of his works. He is also concerned with the theories of vision and sight such as the way the beholder’s hypothetical expectations influence the visual and empirical perception of spatial constructions. He is likely to experiment with the extremes, paradoxes of the representation of the perspective to create the illusion of space. Also he does experiements to renew the techniques of anamorphosis when he distorts the pictures in such a way that it can only be seen from a particular aspect or in such a way that its new layer of meaning only reveals by the interposition of reflective surfaces.

  Orosz is a regular participant in the major international biennials of posters and graphic art and his works has been shown in many individual and group exhibitions in Hungary and abroad. Film director at the Pannonia Film Studio, teacher at the West Hungarian University. He was elected to the Alliance Graphique Internationale, and to the Hungarian Academy of Arts.

  Utisz (pronounced: Outis, means ‘Nobody’), his pseudonym is used since 1984 and it was also Odyssey’s feigned name in the well-known affair with the Cyclops that ended in the blinding of the monster’s only eye. According to Orosz’s symbolic and ironic name, his art is a kind of attack on the eye.

Web sites:
http://www.utisz.net
http://mek.oszk.hu/01600/01686/html/
http://www.c3.hu/perspektiva/kiallitok/
http://www.gallerydiabolus.com/gallery/artist.php?id=utisz&page=133
http://www.youtube.com/watch?v=vD3qgSY5MPI&NR=1
http://www.indexbook.com/libro.php?575
http://www.youtube.com/watch?v=WAfYa8-fRac
http://www.gallerydiabolus.com/gallery/artist.php?id=utisz&page=131/
http://www.gallerydiabolus.com/gallery/artist.php?id=utisz&page=198
http://www.bridgesmathart.org/art-exhibits/bridges2008/orosz.html
http://utisz.blogspot.com/
http://www.utisz-utisz.blogspot.com/

   Rufus Butler Seder, an optical artist and a filmmaker, designs kinetic products, urban installations and optical toys. He transforms everyday objects into movie machines utilizing recently patented applications based on early optical principles. Now based in Boston (USA), he started out as a film maker, but a lifelong interest in optical toys led him changing his career and developing a range of unique optic art media.
  “The notion of making movies for the wall came to me when a colleague of mine, animator Flip Johnson, built a large-scale experimental zoetrope in my Boston loft in the mid 80’s. On the wall, he’d drawn a long series of fish in different phases of motion, lit them with fluorescent lights, then, in front of the wall he positioned a big strip of black cardboard with a series of vertical slits cut in it. If you ran alongside the wall with your head turned at a neck-cramping 90 degree angle you got the impression of movement, although perhaps a bit dark and blurry. Flip seemed disappointed by the result of his efforts, but I thought it was great...” explains R. Seder.

  It is around 1992 that Rufus Butler Seder started developing optic kinetic media he calls Lifetiles. These amazing 'Movies for the Wall' are grand-scale glass-tiled murals that appear to come to life when the viewer walks by. He has created works for the Smithsonian Institute, an athletic centre, several aquariums, and other public places and museums. Lifetiles installations are made up of a large number of special 8 inch square lens-ribbed glass tiles, and the whole mural can be over seventy feet in length. When the viewer walks past the installation, the ribbed tile lenses unveil the coded images 'frame by frame', and the observer's brain links this rapid succession of images together, creating the impression of movement. All animation created by Rufus’ work is, in fact, based on the same principle: persistence of vision. The movement looks continuous because our brain keeps the memory of the first picture in mind whilst it changes to the next.
  Rufus developed in 1997 the Kineticard, a kind of kinetic greetings card that can be sent through the mail. The card consists of two parts. The printed card has a curious design consisting of what seams to be a random collection of vertical lines. These lines contain information about six different images, that together form an animation. To make the animated sequence visible, the complex image has to be viewed through a plastic sleeve that has a fine pattern of black stripes printed on it (called ‘picket fence’). As the plastic sleeve is slid across, different sections of lines become visible making the animation appears.
  For more details, see the Rufus Butler Seder website at: www.eyethinkinc.com