// Square sq is potential destination square for piece
public boolean isValidMove(Square sq) {
if (sq.sharesRowWith(this.getCurrentSquare())
&& !sq.sharesColumnWith(this.getCurrentSquare())) {
if (!sq.pieceIsBetweenCol(this.getCurrentSquare())) return true;
else return false;
} else if (!sq.sharesRowWith(this.getCurrentSquare())
&& sq.sharesColumnWith(this.getCurrentSquare())) {
if (!sq.pieceIsBetweenRow(this.getCurrentSquare())) return true;
else return false;
} else if (sq.isOnDiagonal(this.getCurrentSquare())) {
if (sq.pieceIsBetweenDiag(this.getCurrentSquare())) return false;
else return true;
} else return false;
}
