Go Back One Turn
     If  you're  playing  against  the computer and you get absolutely
crushed  on  a  turn, hit the menu button, quit the game, then go back
into  it,  and  it  will  continue the game from the beginning of your
turn.

Go Forward Skipping Current Turn
     Beat  half  of the level or turn, and press #3 everytime you want
to skip the current level.