#include <stdio.h>
#include <string.h>
#include <stdlib.h>
main()
{
	int time,times[8][8]={0, 3, 2, 3, 2, 3, 4, 5, 3, 2, 1, 2, 3, 4, 3, 4, 2, 1, 4, 3, 2, 3, 4, 5, 3, 2, 3, 2, 3, 4, 3, 4, 2, 3, 2, 3, 4, 3, 4, 5, 3, 4, 3, 4, 3, 4, 5, 4, 4, 3, 4, 3, 4, 5, 4, 5, 5, 4, 5, 4, 5, 4, 5, 6};
	char x[3],y[3];
	while(scanf("%s%s",&x,&y)!=EOF)
	{
		if((strcmp(x,"a1\0")==0 && strcmp(y,"b2\0")==0)||(strcmp(x,"a8\0")==0 && strcmp(y,"b7\0")==0)||(strcmp(x,"h1\0")==0 && strcmp(y,"g2\0")==0)||(strcmp(x,"h8\0")==0 && strcmp(y,"g7\0")==0)||(strcmp(x,"b2\0")==0 && strcmp(y,"a1\0")==0)||(strcmp(x,"b7\0")==0 && strcmp(y,"a8\0")==0)||(strcmp(x,"g2\0")==0 && strcmp(y,"h1\0")==0)||(strcmp(x,"g7\0")==0 && strcmp(y,"h8\0")==0))
		{
			time=4;
		}
		else
		{
			time=times[abs(x[0]-y[0])][abs(x[1]-y[1])];
		}
		printf("To get from %s to %s takes %d knight moves.\n",x,y,time);
	}
	return 0;
}
/**************************************************************
	Problem: 2124
	User: admin
	Language: C
	Result: Accepted
	Time:12 ms
	Memory:1144 kb
****************************************************************/