Dishwasher, method for operating a dishwasher, and computer program product

A dishwasher, comprising:

• a first spray apparatus;
• a second spray apparatus;
• a pump facility configured to selectively supply washing liquor to the first and second spray apparatuses to embody washing zones, respectively;
• an intensive spray apparatus assigned to the first spray apparatus or the second spray apparatus;
• a switch valve configured to bring the intensive spray apparatus into an activated or deactivated state;
• and
• a control apparatus configured to carry out a washing program for washing items to be washed arranged in a washing compartment of the dishwasher, said control apparatus configured to detect a first pump flow while the first spray apparatus is being supplied with washing liquor and to detect a second pump flow while the second spray apparatus is being supplied with washing liquor, to form a current differential value as a function of the first pump flow and the second pump flow, to store at least one earlier differential value with a switch state assigned to the earlier differential value, to ascertain a current switch state of the intensive spray apparatus as a function of the current differential value, the at least one earlier differential value, and a predetermined class differential value, and said control apparatus configured to adapt the washing program as a function of the ascertained current switch state.