Vladimir Krasnoukhov, Russia. The AT-Puzzle was also Vladimir's IPP35 Exchange Puzzle. For some of his other very nice puzzle designs, click here and here.
Manufactured and sold by Vladimir himself. He may still have some copies available.
13.5cm x 7.5cm x 0.6cm
Laser cut acrylic used throughout. 3mm thickness for the pieces and the tray. Excellent quality and Vladimir went one step further by providing a red piece-holder so that all the pieces are are nicely held together when not in play.
This is not just your usual packing puzzle, but one with an added task; to pack all the 5 tetramino (each piece is 4 units) pieces into the tray in such a fashion that none of the pieces can slide (or move) in any direction. As a pure packing puzzle, this would have been a no-brainer, but with the anti-slide requirement, the AT-Puzzle becomes a very difficult puzzle indeed!
I took the better part of a day and still couldn't figure out the solution and decided to email fellow puzzle collector George Bell (who had solved it a while back) for a clue. But before he replied, something clicked in my brain and I tried arranging the pieces in a new way...and there, within seconds...I had solved it! I usually don't spend so much time on any one puzzle, but this one just drew me in and I went on and on playing with it, refusing to give up. I wish I could do the same for burrs.
Very difficult! thinking outside the norm is required no less. If you wish to see the solution, please click here - Password - antislide.
The AT-Puzzle is absolutely fantastic. It is also George Bell's favourite. So innocuously simple looking yet extremely challenging for a 5-piece puzzle. One of those puzzles that once you pick it up and know what you have to do, you simply can't put it down.