#include <iostream>

using namespace std;

int w, h;

static const int EMPTY = 0;
static const int WALL = 1;
static const int START = 2;
static const int GOAL = 3;
static const int inf = 9999;

int table[24][24];
int goal_x;
int goal_y;
int start_x;
int start_y;

int min_cnt;
void rec(int x, int y, int cnt){
  if (cnt >= 10)
    return;
  int xx, yy;
  for (int i = -1; i <= 1; ++i){
    for (int j = -1; j <= 1; ++j){
      int xx = x;
      int yy = y;

      if (i == 0 and j == 0)
	continue;
      if (i != 0 and j != 0)
	continue;
      int xxx = xx + i;
      int yyy = yy + j;
      if (xxx < 0 || w <= xxx || yyy < 0 || h <= yyy ||
	  table[xxx][yyy] == WALL){
	continue;
      }

      for ( ; ; ){
	xx += i;
	yy += j;
	
	if (xx < 0 || w <= xx || yy < 0 || h <= yy)
	  break;
	if (table[xx][yy] == GOAL){
	  min_cnt = min(min_cnt, cnt+1);
	  return;
	}
	if (table[xx][yy] == WALL){
	  table[xx][yy] = EMPTY;
	  rec(xx-i, yy-j, cnt+1);
	  table[xx][yy] = WALL;
	  break;
	}
      }
    }
  }
}

int main(){
  while (cin >> w >> h && (w and h)){
    for (int i = 0; i < h; ++i){
      for (int j = 0; j < w; ++j){
	cin >> table[j][i];
	if (table[j][i] == START){
	  start_x = j;
	  start_y = i;
	  table[j][i] = EMPTY;
	}
      }
    }

    min_cnt = inf;
    rec(start_x, start_y, 0);
    int result = min_cnt;
    if (result < inf){
      cout << result << endl;
    }else{
      cout << -1 << endl;
    }
  }
}