import java.applet.Applet;  // for Applet
import java.awt.Graphics;   // for Graphics
import java.awt.Color;      // for Color.red
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;  // for ImageIcon


public class PuzzleGameKeyStudent extends Applet {

	int appletW=300, appletH=350;
	int pieceW, pieceH;
	int side=4, backType;
	int puzzle[][] = new int[side][side];
	int px=0, py=0;
	int left=0, top=0;
	boolean showAll = false;
	Image bgBuffer, img;
	Graphics bgGC;
	
	// puz1 ЧΘΑ
	int[][] puz1 = 
	{
		{ 0, 1, 2, 3},
		{ 4, 5, 6, 7},
		{ 8, 9,10,11},
		{12,13,14,-1}
	};
	// puz2 虜