The objective of the contest is pretty simple - to pulse/blink a minimum 4 LEDs (more is better) at independent, variable rates using any PIC of your choice. The actual blink rate is not important, as long as it is visually discernible. Also, the method to adjust the blink rate is unimportant - you can use POTs on ADC channels or whatever method you want.

Sounds easy? There's a small catch though - each LED must ramp-up and ramp-down in brightness from 0 to 100% and NOT just toggle hard-on and hard-off.