I'm searching for Ricochet Robots, travel version
Here's the game I think I was thinking of: LUNAR LOCKOUT

http://www.funagain.com/control/product?product_id=010971&amp;reviews_show_all=Y



Here's how one of the reviews describes it:


  This is a great little solitaire game. It's quite similar to Ricochet
  Robot in theme, but there are some important differences. There are no
  walls--not even around the edges. You must get your man to the center
  solely by bouncing him off robots. The goal-spot is always the red
  square in the center. Instead of random board and piece placement, you
  must solve puzzles as provided on cards. If you think these
  differences would make it more simple than Ricochet Robot, then you're
  in for a big surprise. The puzzles, especially at the top levels, are
  tear-your-hair-out difficult. Solutions are thankfully provided on the
  backs of the cards, but that's cheating. The components are very high
  quality. The robots all have their own 'look' beyond being different
  colors. The base of the board slides out nicely, has storage space for
  the robots and cards, and snaps together snugly. My only complaint is
  that I'd like to see an expansion set soon with new puzzles to solve.