{"ref":"master","ref_type":"branch","master_branch":"master","description":"A puzzle game is played in a 3x3 square board contains 9 square cells. Each of them has a number from 0 to 8. At an arbitrary order of 9 cells in the board, the goal is reorder those cells to original state by swapping each pair which are two 4-neighbor cells. This project uses heuristic method to solve Eight Puzzle problem. Two heuristic function has been chosen:   ","pusher_type":"user"}