#include<bits/stdc++.h>
using namespace std;
char a,c;
int b,d;
int mp[10][10];
int x[10]={2,2,1,-1,1,-1,-2,-2};
int y[10]={1,-1,2,2,-2,-2,1,-1};
int main(){
    while(cin>>a>>b>>c>>d){
    memset(mp,-1,sizeof(mp));
    int k=1,num=0;
    mp[a-‘a‘+1][b]=0;
    while(k<64){
        for(int i=1;i<=8;++i){
            for(int j=1;j<=8;++j){
                if(mp[i][j]==num){
                    for(int m=0;m<8;++m){
                        if(i+x[m]<=8&&i+x[m]>=1&&j+y[m]<=8&&j+y[m]>=1&&mp[i+x[m]][j+y[m]]==-1){
                        mp[i+x[m]][j+y[m]]=num+1;
                        }
                    }
                    
                }       
            } 
        }
        num++;
        if(mp[c-‘a‘+1][d]!=-1)
        break;
    }
        cout<<"To get from "<<a<<b<<" to "<<c<<d<<" takes "<<mp[c-‘a‘+1][d]<<" knight moves."<<endl;
    }
}