Don´t Get Rooked

/*
 * File:   main.c
 * Author: alulab11
 *
 * Created on 20 de junio de 2014, 11:31 AM
 */

#include <stdio.h>
#include <stdlib.h>
#define MAX 4

void buscaPo(int fil, int col,int tam,int* sx, int *sy){
   *sx = fil+1;
   *sy = col;
   if (*sx == tam){
       *sx = 0;
       *sy = col+1;
   }
}

int esValido(char A[MAX][MAX],int tam, int fil, int col){
    int i;
    if (A[fil][col]== 'X'|| A[fil][col]=='T')
        return 0;
    for(i=col-1;i>=0;i--){
        if (A[fil][i] == 'X') break;
        if (A[fil][i] == 'T') return 0;
    }
    for(i=fil-1;i>=0;i--){
       if (A[i][col] == 'X') break;
       if (A[i][col] == 'T') return 0;
    }
    return 1;

}


void dontGetRooked(int fil, int col, char A[MAX][MAX],int tam,
                  int *cantTorres, int *maxTorres){
    int nuevoX,nuevoY;
    if (col == tam){
        if(*cantTorres > *maxTorres)
            *maxTorres = *cantTorres;
        return;
    }
    buscaPo(fil,col,tam,&nuevoX,&nuevoY);

    if (esValido(A,tam,fil,col)){
        A[fil][col] = 'T';
        (*cantTorres)++;
        dontGetRooked(nuevoX,nuevoY,A,tam,cantTorres,maxTorres);
        A[fil][col]= '.';
        (*cantTorres)--;
    }
    dontGetRooked(nuevoX,nuevoY,A,tam,cantTorres,maxTorres);
    return;
}
int main(int argc, char** argv) {
    char c;
    int tam;
    char A[MAX][MAX];
    int maxTorres,contTorres;
    scanf("%d",&tam);
    while(tam>0){
        maxTorres = 0;
        contTorres = 0;
                int i,j;
                for (i=0;i<tam;i++){
                        for(j=0;j<tam;j++){
                                scanf(" %c",&A[i][j]);
                         }
                }

                dontGetRooked(0,0,A,tam,&contTorres,&maxTorres);
                printf("%d\n",maxTorres);

        scanf("%d",&tam);
    }
    return 0;
}