Obligado.En the farms. (Large tracts of land, ) the owners, patterns.They are called are obliged.Because as the word said it, are obliged to work, housing and a food ration. They also must pay with a day's work a week, for the right to travel on a road they have to traverse the lands of this are owner of these lands.In addition, nor the same game of chess would be the same, with the absence of pawns, watched with disdain, are important workers, and they should be treated with respect. pawns! or anything, will the King first? without pawns, nor servants! It would not exist. Kingdom.