This more advanced puzzle will drive you nuts!

At the highest level, Brain-Chek!™ PhD is probably the most difficult puzzle you will encounter. Each time you move the slider past a square the center dot changes to green or yellow and the arrow moves to one of three positions. Here are the challenge patterns:

• BA (easy). All dots either green or yellow. Ignore directions of the arrows.
• BA with Honors (still easy). Same as BA solution, with slider finishing in lower right-hand corner.
• Masters (hard). All arrows in same direction. Ignore color of the dots.
• Masters with Honors (harder). Masters solution, with slider finishing in lower right-hand corner.
• PhD (very hard). All dots one color and all arrows pointing in same direction.
• PhD with Honors (hardest). PhD solution, with slider finishing in lower right-hand corner.