Why this sliding tile puzzle arrangement is impossible

Remember the sliding tile puzzle from the lecture and the graph... | Filo

SOLVED: Artificial Intelligence, Q1, M Fall 21QUESTION I. Consider a sliding-tile puzzle with three tiles and a blank and are given a problem with the following initial and final states where an "x" represents a blank spot. Assume that you always try moving the blank first right, then left, then up, and then down.Initial:x123Goal:23xa. How many possible states are there, either reachable or unreachable, from the given start state?b. Draw the complete search space reachable from the given start s

block sliding puzzle games