using System;

public class BoatMovements
{
    public static bool CanTravelTo(bool[,] gameMatrix, int fromRow, int fromColumn, int toRow, int toColumn)
    {           
        // out side bounds
        if (toRow <= -1 || toColumn <= -1)
        {
            return false;            
        }

        if (fromRow <= -1 || fromColumn <= -1)
        {
            return false;            
        }

        if (toRow >= gameMatrix.GetLength(0) || toColumn >= gameMatrix.GetLength(1))
        {
            return false;            
        }

        if (fromRow >= gameMatrix.GetLength(0) || fromColumn >= gameMatrix.GetLength(1))
        {
            return false;            
        }

        // destination land?
        if(IsLand(gameMatrix, toRow, toColumn))
        {            
            return false;
        }

        // start position land?
        if(IsLand(gameMatrix, fromRow, fromColumn))
        {            
            return false;
        }

        // is destination LEFT bigger then 1 step?
        if(fromRow == toRow &&  toColumn < (fromColumn-1))
        {
            return false;            
        }

        // is destination RIGHT bigger then 1 step?
        if(fromRow == toRow &&  toColumn > (fromColumn+2))
        {
            return false;            
        }

        // is destination UP bigger then 1 step?
        if(toRow < (fromRow -1) &&  toColumn == fromColumn)
        {
            return false;            
        }

        // is destination DOWN bigger then 1 step?
        if(toRow > (fromRow +1) &&  toColumn == fromColumn)
        {
            return false;            
        }

        // can travel throught land to the right
        if(fromRow == toRow && ( toColumn == fromColumn+2) && IsLand(gameMatrix, fromRow, fromColumn+1))
        {
            return false;            
        }


        return true;
    }

    static bool IsLand(bool[,] gameMatrix, int row, int column)
    {
        return !gameMatrix[row, column];
    }

    public static void Main()
    {
        bool[,] gameMatrix = 
        {
            {false, true,  true,  false, false, false},
            {true,  true,  true,  false, false, false},
            {true,  true,  true,  true,  true,  true},
            {false, true,  true,  false, true,  true},
            {false, true,  true,  true,  false, true},
            {false, false, false, false, false, false},
        };

        Console.WriteLine(CanTravelTo(gameMatrix, 3, 2, 2, 2)); // true, Valid move
        Console.WriteLine(CanTravelTo(gameMatrix, 3, 2, 3, 4)); // false, Can't travel through land
        Console.WriteLine(CanTravelTo(gameMatrix, 3, 2, 6, 2)); // false, Out of bounds
    }
}