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import java.util.Scanner;

class pos {
	int x, y;

	public pos(int x, int y) {
		this.x = x;
		this.y = y;
	}

	public pos() {
		// TODO Auto-generated constructor stub
	}

	public int getX() {
		return x;
	}

	public void setX(int x) {
		this.x = x;
	}

	public int getY() {
		return y;
	}

	public void setY(int y) {
		this.y = y;
	}
}

class queue_3 {
	static pos[] Data = new pos[100000];
	static int front, rear;

	public queue_3() {
		this.front = this.rear = -1;
	}

	void reset() {
		front = rear = -1;
	}

	public void enQueue(pos value) {
		Data[++rear] = value;
	}

	pos deQueue() {
		return Data[++front];
	}

	boolean isEmpty() {
		if (this.front == this.rear) {
			return true;
		}
		return false;
	}
}

public class Solution {

	static int n, m, cnt_exit;
	static int[][] arr = new int[205][205];
	static int[] spinR = { 0, 0, 1, -1 };
	static int[] spinC = { 1, -1, 0, 0 };
	static int cr, cc, nr, nc, r, c;

	public static void main(String[] args){
		//System.setIn(new FileInputStream("Text"));
		Scanner scanner = new Scanner(System.in);

		queue_3 lqueue = new queue_3();
		int tc = scanner.nextInt();

		for (int Case = 1; Case <= tc; Case++) {
			lqueue.reset();
			n = scanner.nextInt();

			for (int i = 0; i < n; i++) {
				for (int j = 0; j < n; j++) {
					arr[i][j] = scanner.nextInt();
					if (arr[i][j] == 2) {
						r = i;
						c = j;
						arr[i][j] = 1;
						pos pos = new pos(r, c);
						lqueue.enQueue(pos);
					}
				}
			}

			while (!lqueue.isEmpty()) {
				pos Current = lqueue.deQueue();
				pos pos = new pos(nr, nc);
				cr = Current.getX();
				cc = Current.getY();
				for (int i = 0; i < 4; i++) {
					nr = cr + spinR[i];
					nc = cc + spinC[i];
					if (nr >= 0 && nr < n && nc >= 0 && nc < n
							&& arr[nr][nc] == 1 && (nr != r || nc != c)) {
						pos = new pos(nr, nc);
						lqueue.enQueue(pos);
						arr[nr][nc] = arr[cr][cc] + 1;

					}

				}
			}
			if (arr[n - 1][n - 1]==1 || arr[0][0] == 1) {
				System.out.println(-1);
			} else {
				System.out.println(arr[n - 1][n - 1] + arr[0][0]-2);
			}
		}
	}
}

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10
4
1 0 1 1
1 1 2 0
0 1 0 1
1 0 1 1
5
1 0 1 1 0
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1 1 1 0 1
1 0 1 0 1
6
1 1 0 2 1 1
0 1 0 1 0 1
0 1 0 1 0 1
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0 0 0 1 0 1
1 1 1 1 0 1
5
1 1 0 1 0
1 0 2 1 1
1 0 1 1 1
1 1 1 0 1
1 1 1 0 1
10
1 0 1 1 1 1 1 1 1 1
1 0 1 0 0 0 0 0 0 1
1 0 1 0 1 1 1 1 0 1
1 0 1 0 1 0 0 1 0 1
1 0 1 0 1 0 0 1 0 1
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1 0 1 0 0 0 0 1 0 1
1 0 1 1 1 1 1 1 0 1
1 0 0 0 0 0 0 0 0 1
1 1 1 1 1 1 1 1 1 1
21
1 1 1 0 1 0 0 0 0 0 1 1 1 1 1 1 1 0 1 0 1 
0 0 1 0 0 1 0 0 1 1 1 1 0 1 0 1 1 1 1 1 1 
1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 1 1 0 0 1 1 
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1 1 1 1 1 1 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 
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1 1 0 0 1 0 0 1 0 0 1 0 1 0 1 0 1 0 1 1 1 
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1 1 0 1 0 0 1 0 0 1 1 0 1 1 1 1 0 1 0 1 1 
1 0 1 1 1 1 0 0 0 0 0 0 1 0 1 0 0 0 1 1 1 
37
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 0 1 0 1 1 1 0 1 0 0 1 1 0 1 0 1 0 1 
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100
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1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
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1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
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1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
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8
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12
98
64
92
118
-1
414