Cook chicken meat. For that bring a pot with water to boil, salt it to taste, put chicken in, and cook it for about 20 mins, then turn heat off, the pot aside and let chicken cool down till room temperature in the water:
Once chicken is cooled down, dice it to the mixing bowl:
Peel eggs, slice each in half, then chop eggs using egg slicer or knife:
Slice prunes (if prunes are very dry, you can soak them in hot water for few minutes to soften), add them to the bowl:
Pour walnuts to the bowl:
Dice cucumbers into pieces of similar size of chicken pieces (I also remove skin from cucumbers):
Season salad with salt, add yoghurt or sour cream (or a mix of these):