I wish Dexterity would come out with additional levels. After 3 or 4 trips through the levels, I keep discovering new things. For instance, the tip for level 17 will keep you from discovering a very quick and easy solution. Forget about the T Rex's. Moving them down and tripping switches at just the right time is time consuming and confusing. Instead, just set up the switches so that Rightie makes a short loop around the upper left, ending up turning right across the upper left switch (to his death in the jaws of the first T Rex). The switch releases all three of the Wizards to take the short walk to their goals.

Bruce :D

My wife spent three days on and off in 17. She called me to have a go.I hadn't seen the hint,so I saw the solution instantly and did it. She may forgive me eventually.