Connect four using Processes and Pipes

I am trying to make a connect four game that plays its self multiple times. I want to do this using Processes and Pipes because I want to learn how to use them. I know the you need to use for to create the child processes, but I can't figure out what to do next.

Here is my code:

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <pthread.h>

int *moves;
//int **Board;
int w;

void display(int ** Board,int rows, int columns);
int** build_board(int N);
int makeMove(int** Board, int player);
int checkVictory(int** Board);
int checkHorr(int** Board);
void AI_move(int** Board,int player, int player2);
void play(int **Board);

int main(){
    
    srand((int) time(NULL));

    int width= 8;
    w=8-1;
    
   int** Board=build_board(width);
    printf("parent_pid = %d\n", getpid());
   // fork();
    play(Board);


    return 0;
}

void play(int **Board){
    
    int i, check;
    
    for (i=0; i<((w+1)*(w+1)/2); i++) {
        
        AI_move(Board,1,2);
        
        check=checkVictory(Board);
        
        if (check==1 || check==2) {
            if (check==1)
                puts("Winning Board Player1");
            else
                puts("Winning Board Player2");
            display(Board,w+1, w+1);
            break;
        }
        
        makeMove(Board,2);
        
        check=checkVictory(Board);
        
        if (check==1 || check==2) {
            if (check==1)
                puts("Winning Board Player1");
            else
                puts("Winning Board Player2");
            display(Board, w+1, w+1);
            break;
        }
        
    }
}

int checkVictory(int** Board){
    
    int i,j;
	//check horizontally
	for (i=0; i<=w; i++) {
        for (j=w; j>=0; j--) {
            if ( j > 2 && Board[i][j]==1 && Board[i][j-1]==1 && Board[i][j-2]==1 && Board[i][j-3]==1) {
                //puts("Horr Winner, Player1");
                return 1;
            }
            if ( j > 2 && Board[i][j]==2 && Board[i][j-1]==2 && Board[i][j-2]==2 && Board[i][j-3]==2) {
                //puts("Horr Winner, Player2");
                return 2;
            }
        }
    }
    
    //check vertically
    for (i=0; i<=w; i++) {
        for (j=w; j>=0; j--) {
            if ( i < (w-2) && Board[i][j]==1 && Board[i+1][j]==1 && Board[i+2][j]==1 && Board[i+3][j]==1) {
               // puts("Vertical Winner, Player1");
                return 1;
            }
            if ( i < (w-2) && Board[i][j]==2 && Board[i+1][j]==2 && Board[i+2][j]==2 && Board[i+3][j]==2) {
                //puts("Vertical Winner, Player2");
                return 2;
            }
        }
    }

    
//    //check diagonally
    for (i=0; i<=w; i++) {
        for (j=w; j>=0; j--) {
            if (i < (w-2) && j > 2 && Board[i][j]==1 && Board[i+1][j-1]==1 && Board[i+2][j-2]==1 && Board[i+3][j-3]==1) {
                //puts("DIAG L-R Winner, Player1");
                return 1;
            }
            if (i > 2 && j < 5 && Board[i][j]==1 && Board[i-1][j+1]==1 && Board[i-2][j+2]==1 && Board[i-3][j+3]==1) {
               // puts("DIAG L-R Winner3, Player1");
                return 1;
            }
        }
    }
    
    for (i=0; i<=w; i++) {
        for (j=w; j>=0; j--) {
            if (i < (w-2) && j > 2 && Board[i][j]==2 && Board[i+1][j-1]==2 && Board[i+2][j-2]==2 && Board[i+3][j-3]==2) {
                //puts("DIAG L-R Winner, Player2");
                return 2;
            }
            if (i > 2 && j < 5 && Board[i][j]==2 && Board[i-1][j+1]==2 && Board[i-2][j+2]==2 && Board[i-3][j+3]==2) {
              //  puts("DIAG L-R Winner3, Player2");
                return 2;
            }
        }
    }

    
    return 0;
    
}

int** build_board(int N){
  
    int i,j;
    
    int **Board = (int**) malloc(N*sizeof(int*));
    for (i = 0; i < N; i++)
        Board[i] = (int*) malloc(N*sizeof(int));
    for (i = 0; i < N; i++) {
        for (j = 0; j < N; j++) {
            Board[i][j] = 0;
        }
    }
    
    return Board;
}

void AI_move(int**Board,int player, int player2){
    
    int i,j;
    
    for (j=0; j<=w; j++) {
        for (i=w; i>=0; i--) {
            // printf("I: %d\n", i);
            if ( j < w && Board[j][i]==0 && Board[j+1][i]!=0) {
                Board[j][i]=player;
                if(checkVictory(Board)==1){
                    //puts("Found Winning Move");
                    //display(Board,w+1, w+1);
                    printf("Parent placed peice at: %d,%d\n", j,i);
                    return;
                }
                else
                    Board[j][i]=0;
            }
        }
    }
    
//    for (j=0; j<=w; j++) {
//        for (i=w; i>=0; i--) {
//            // printf("I: %d\n", i);
//            if ( j < w && Board[j][i]==0 && Board[j+1][i]!=0) {
//                Board[j][i]=player2;
//                if(checkVictory(Board)==2){
//                    puts("Found Blocking Move");
//                    Board[j][i]=player;
//                    display(Board,w+1, w+1);
//                    return;
//                }
//                else
//                    Board[j][i]=0;
//            }
//        }
//    }
    
    //makeMove(Board,player);

    int a;
    start:a= rand()%(w+1);
    for (i=w; i>=0; i--) {
        if ((Board[i][a])==0) {
            Board[i][a]=player;
            printf("Parent placed peice at: %d,%d\n", i,a);
            return;
        }
    }
    
    goto start;
}

int makeMove(int** Board,int player){
    
    int a;    
    start:a= rand()%(w+1);
    int i;
    for (i=w; i>=0; i--) {
        if ((Board[i][a])==0) {
            Board[i][a]=player;
            printf("Child laced peice at: %d,%d\n", i,a);
            return 1;
        }
    }
    
    goto start;    
}

void display(int** Board,int rows, int columns){
    
    int i,j;
    
    for (i=0; i <= w;i++){
        for (j=0;j <=w;j++){
            if (Board[i][j]==1) {
                printf(" R ");
            }
            else if(Board[i][j]==2)
                printf(" B ");
                //printf(" %d ",Board[i][j]);
            else
                printf(" - ");
        }
        printf("\n");
    }
    
}

Ive tried to just for in my main, but each produce the same board and moves, even though their random. I am just lost on what I have to do next. Any suggestion would be very helpful.