#include
#include
#include
#include
#include

#define true 1
#define false 0

unsigned int a,b,c,d,e,f,g,h;
void main(void)
{
 unsigned char chk_crash(unsigned char,unsigned char,unsigned char);
 void draw_puzzle(void);
 clrscr();
 for (a=1;a<=8;a++);
  for (b=1;b<=8;b++);
   if (chk_crash(a,b,1))
     for (c=1;c<=8;c++)
      if ((chk_crash(c,b,1)) && (chk_crash(c,a,2)))
       for (d=1;d<=8;d++)
    if ((chk_crash(d,c,1)) && (chk_crash(d,b,2)) && (chk_crash(d,a,3)))
     for(e=1;e<=8;e++)
      if  ((chk_crash(e,d,1)) && (chk_crash(e,c,2)) && (chk_crash(e,b,3)) && (chk_crash(e,a,4)))
       for (f=1;f<=8;f++)
        if ((chk_crash(f,e,1)) && (chk_crash(f,d,2)) && (chk_crash(f,c,3)) && (chk_crash(f,b,4)) && (chk_crash(f,a,5)))
         for (g=1;g<=8;g++)
          if ((chk_crash(g,f,1)) && (chk_crash(g,e,2)) && (chk_crash(g,d,3)) && (chk_crash(g,c,4)) && (chk_crash(g,b,5)) && (chk_crash(g,a,6)))
           for (h=1;h<=8;h++)
        if ((chk_crash(h,g,1)) && (chk_crash(h,f,2)) && (chk_crash(h,e,3)) && (chk_crash(h,d,4)) && (chk_crash(h,c,5)) && (chk_crash(h,b,6)) && (chk_crash(h,a,7)))
        {
        draw_puzzle();
        getch();
        }
          getch();
 }
 unsigned char chk_crash(unsigned char i,unsigned char j,unsigned char d)
  {
   if ((i==j) || (abs(i-j)==d))
    return(false);
   else
    return(true);
  }
  void draw_puzzle(void)
  {
   unsigned char a1,b1,a2,b2,i,v;
   clrscr();
   for (a1=1;a1<=16;a1++)
    for (b1=18;b<=65;b1++)
     {
      gotoxy(b1,a1+d);
      a2=(a1-1)/2+1;
      b2=(b1-18)/6+1;
      if (((a2+b2)%2)==0)
       textcolor(11);
      else
       textcolor(1);
      cprintf("a\0");
      for (i=0;i<8;i++)
       {
    switch(i)
     {
      case 0:{v=a;break;}
      case 1:{v=b;break;}
      case 2:{v=c;break;}
      case 3:{v=d;break;}
      case 4:{v=e;break;}
      case 5:{v=f;break;}
      case 6:{v=g;break;}
      case 7:{v=h;break;}
     }
       gotoxy(15+6*v,5+i*2);
       cprintf("*\0");
       }
}
}