public class ChessBoard {
    protected boolean[][] board;

    public ChessBoard(int size){
        board = new boolean[size][size];
    }
    public ChessBoard(boolean[][] board){
        this.board = board;
    }

    public boolean[][] getBoard() {
        return board;
    }
    public void setBoard(boolean[][] board) {
        this.board = board;
    }

    protected void positionQueen(int line, int column) {
        board[line][column] = true;
    }
    protected void deleteQueen(int line, int column) {
        board[line][column] = false;
    }

    protected boolean checkPosition(boolean[][] board, int line, int column){

        if(line >= board.length || line < 0 || column >= board.length || column < 0)
            return false;

        for(int i = 0; i < board.length; i++){  //checks horizontally and vertically for capturing queens
            if(board[line][i] || board[i][column]){
                return false;
            }
        }
        for(int i = 0; i <= line; i++){ //checks up left diagonal for capturing queens
            if(board[line - i][column - i]){
                return false;
            }
        }
        for(int i = 0; i <= line; i++){ //checks up right diagonal for capturing queens
            if((column + 1) >= board.length)
                break;
            if(board[line - i][column + i]){
                return false;
            }
        }
        for(int i = 0; i <= line; i++){ //checks down right diagonal for capturing queens
            if((column + 1) >= board.length || (line + 1) >= board.length)
                break;
            if(board[line + i][column + i]){
                return false;
            }
        }
        for(int i = 0; i <= line; i++){ //checks down left diagonal for capturing queens
            if((line + 1) >= board.length)
                break;
            if(board[line + i][column - i]){
                return false;
            }
        }
        return true;
    }