Assign proper cutter designation. Every expert system has a general problem solving strategy, built into the rules in its inference engine, that searches the knowledge rules for the optimal solution. This is called Heuristic searching. Or, the inference engine copies the rules of thumb used by experts. That is, the rules that guide the search are the informal rules used by the human expert.
Blind search involves searching all possible solutions.
This is acceptable to small scale problems but it is inefficient for larger problems. The two most widely used techniques in blind searchs are foward and backward chaining. Foward chaining is a data-driven method. The inference engine begins with all known facts and matches them with facts in the knowledge base. This procedure is continued until a solution is arrived at.