OJ Board

I need help pleas.
This is my code:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class Main {

private int[][] field;
private int[][] moves = { { 1, 0 }, { -1, 0 }, { 0, 1 }, { 0, -1 } };
private int moveCount ...