Wash and clean the cucumber. Cut 1 piece (about 50 g) into cubes. Peel and chop the rest. Peel and chop garlic. Puree yoghurt, peeled cucumber and garlic. Season to taste with salt, pepper and paprika.
Wash the dill, chop finely and stir into the soup, except for something to garnish. Clean, wash and chop the tomato. Sprinkle tomato and cucumber cubes over the soup. Garnish with dill.