http://baxterweb.com/puzzles/
www.ageofpuzzles.com/
www.puzzles.com
http://home.comcast.net/~stegmann/home.htm
www.puzzlemaster.ca 
www.puzzleum.de

www.puzzleworld.org/SlidingBlockPuzzles/
www.ageofpuzzles.com/Puzzles/SlidingBlockPuzzles.htm
www.brainyday.com/jared/flash/sliders.html
http://home.comcast.net/~stegmann/sliding.htm
http://home.comcast.net/~stegmann/rearrangement.htm#dihedral
www.twistypuzzles.com
www.geocities.com/jaapsch/puzzles/
 www.rodoval.com/Deslizzzp/Deslizzzp.html
www.slidingblock.tk
www.markus-goetz.de
www.puzzleatomic.com
www.puzzlein.com
http://sites.google.com/site/geduldspiele/GallerySlidingPuzzles
http://demonstrations.wolfram.com/SquareShufflePuzzle/

DUTCH

MORE INFORMATION

www.puzzelmuseum.nl
www.schuifpuzzels.nl
www.jokebecker.jimdo.com 
http://web.inter.nl.net/users/markpeters/index.htm
http://cff.helm.lu/
http://wittingen-puzzels.jimdo.com/puzzels/schuifpuzzels/
http://paulawilms.jimdo.com/

http://www.handelsdek.nl/02.schuifpuzzels/catalogus/s/samloyd15.14cracked.htm