Puzzle-Paradox Mosaic -- this Tangram-like set was created by Serhiy Grabarchuk in 2008 (www.ageofpuzzles.com/Puzzles/HoleySquareFamily/HoleySquareFamily.htm). In 2010 the puzzle was nicely origaminized by Francis M. Y. Ow (http://www.nickrobinson.info/clients/owrigami/show_diagram.php?diagram=paradox). Using the full set every time, we can form different sets of squares and a lot of different shapes. You can flip pieces over, but not overlap.
The Millennium Puzzle -- created by Serhiy Grabarchuk and Rodolfo Kurchan to celebrate the end of the 2nd Millennium and the beginning of the 3rd Millennium of Anno Domini. Rodolfo Kurchan presented the puzzle as his exchange gift for the Edward Hordern Puzzle Exchange at IPP20, Los Angeles, 2000. The fifteen sliding tiles in the rectangular tray form 1999. Puzzle 1. Change 1999 into 2000. Puzzle 2. You need to rearrange the tiles into another 2000 shape, and then change 2000 into 2001.
The Sliding Bubble Car Puzzle -- designed by Serhiy and Peter Grabarchuk in 1996; published in Serhiy's book in 1996. Then, the puzzle was made by GRIFFIOEN Design BV (The Netherlands) of plywood using a laser-cut technology, 1996.
Railroad Rush Hour -- version of the famous Rush Hour puzzle with some pieces moving in four directions. In addition to Scott Kim's challenges, some challenges have been created by Serhiy Grabarchuk; manufactured by Binary Arts Corp. / ThinkFun, Inc.; released in 1999.
Triple Trip -- designed by Serhiy Grabarchuk in 2000 as a souvenir for the Edward Hordern Puzzle Exchange at IPP20, Los Angeles, USA, 2000. Manufactured by GRIFFIOEN Design BV (The Netherlands). Slide eight rectangular pieces within in the green tray to rotate the whole pattern and interchange its color spots.