Dishwasher wont drain

My dishwasher wont drain completely. There is water left behind a few inches deep at the bottom after each cycle. I checked the drain tube which is not blocked. I also removed the cover inlet and there was no debris to remove. I also let the dishwasher fill and tried to use the reset button but the water did not drain. Any suggestions.

Even though the LPGA did not have an event last week, Cristie Kerr reclaimed the No. 1 position in the world Monday when the Rolex Rankings were released. Kerr first claimed the No. 1 spot in June after winning the LPGA Championship. Ai Miyazato moved from No. 3 to No. 2 and Jiyai Shin dropped from the top spot to No. 3.Kerr originally held the No. 1 spot for three continuous weeks before losing the top spot to Miyazato. Shin then reclaimed the top spot after winning the Evian Masters.Hot products:Callaway LEGACY Fairway WoodCallaway LEGACY IronsCallaway FT-i Driver Callaway FT-i Squareway Fairway Wood