Initial considerations in problem solving:

Three initial considerations in problem solving for easiest(as described in Russell and Norvig): 

• Initial State

 Firstly, the agent have wishes to be told exactly what the initial state is before it starts its search and its level comparing, so then it can keep track of the state as it searches.

• Operators

An operator is a function of controlling when taking one state to another via an action undertaken by the agent. For example, as in chess, an operator operates one arrangement of pieces on the desk-board to another arrangement same like the action of the agent moving a piece.

• Goal Test

It is very essential when designing or developing any task solving agent to know when the query has been solved, i.e., to have a able defined goal test. Suppose that any assignment we had set our agent was to find a name and address for a newborn baby, with some assets. In this case, there are lists of "documentary" names for babies with mother, and any solution must appear in that directory which is use for searching purpose so goal-checking amounts to simply testing whether the name appears in the list. In chess, there is term of goal is get to a checkmate. While there are only a finite number of ways in which have the pieces on a desk-board can represent a checkmate, the number of these is vast so checking a point against them is a bad idea. Instead, much more abstract for the notion of checkmate is used for winning such match, whereby our agent trying to checking that the opponent's king cannot move without or being captured.