Description: The classic tile-sliding puzzle featuring several variants including some with tiles fixed to the board and a "Clean Slate" mode in which the tiles aren't even marked!
How to play: Use the mouse to arrange the tiles on the board. Fixed tiles (with flashing dots) cannot be moved!
Warning: Incorrect working posture can cause musculoskeletal disorders affecting the neck, back, shoulders, arms and fingers. Read "Computer Workstation Ergonomics" article in order to understand and eliminate possible risks.