#include<bits/stdc++.h>
using namespace std;

const int N = 301;
vector col(N,vector(N,bitset<N>(0)));
vector sol(N,vector(N,vector(N,0)));

void calc(){
    for(int i=0;i<N;i++){
        vector tmp(N,bitset<N>(0));
        for(int j=0;j<N;j++){
            bitset<N> prec(0);
            
            for(int k=0;k<N;k++){
                int p1=-1,p2=-1;
                
                if(k==i-1 || k==i+1){
                    p1=j;
                }else if(k==i){
                    p1=j-1;
                    p2=j+1;
                }else{
                    p1 = (~(tmp[k]|col[j][k]|prec))._Find_first();
                }
                
                sol[i][j][k]=p1;
                
                if(p1>=0 && p1<N-1){
                    col[j][k][p1]=1;
                    tmp[k][p1]=1;
                    prec[p1]=1;
                }
                if(p2>=0 && p1<N-1){
                    col[j][k][p2]=1;
                    tmp[k][p2]=1;
                    prec[p2]=1;
                }
            }
        }
    }
    /*
    const int X = 5, Y = 7;
    for(int i=0;i<20;i++){
        for(int j=0;j<20;j++){
            if(i==X && j==Y){
                cout<<"X";
            }else if(abs(i-X)+abs(j-Y)==1){
                cout<<"P";
            }else if(abs(i-X)<=1 || abs(j-Y)<=1){
                cout<<"_";
            }else if(sol[X][Y][i]==j){
                cout<<"P";
            }else{
                cout<<"_";
            }
            
            cout<<" ";
        }
        cout<<"\n";
    }*/
}

int check(int X,int Y,int i,int j){
    if(abs(i-X)+abs(j-Y)==1){
        return 1;
    }else if(abs(i-X)<=1 || abs(j-Y)<=1){
        return 0;
    }else if(sol[X][Y][i]==j){
        return 1;
    }else{
        return 0;
    }
}

void solve([[maybe_unused]]int t){
    int x1,y1,x2,y2;
    cin>>x1>>y1>>x2>>y2;
    x1--;
    y1--;
    x2--;
    y2--;
    
    int ans=0;
    for(int i=x1-1;i>=0;i--){
        if(i==x2 && y1==y2)break;
        ans+=check(i,y1,x2,y2);
    }
    for(int i=y1-1;i>=0;i--){
        if(i==y2 && x1==x2)break;
        ans+=check(x1,i,x2,y2);
    }
    for(int i=x2-1;i>=0;i--){
        if(i==x1 && y1==y2)break;
        ans+=check(x1,y1,i,y2);
    }
    for(int i=y2-1;i>=0;i--){
        if(i==y1 && x1==x2)break;
        ans+=check(x1,y1,x2,i);
    }
    
    cout<<ans<<"\n";
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    
    calc();
    
    int t=1;
    cin>>t;
    for(int i=1;i<=t;i++)solve(i);
    
    return 0;
}