So it became a very big intellectual challenge to me.

It cannot only be for the intellectual challenge, since his current job provides plenty of that.

They said he created the virus as an intellectual challenge to explore the security of computer systems.

They thrive on intellectual challenges in their areas of interest and ability.

"I'm not out here for the intellectual challenge," he admitted.

I enjoy this because of the diversity and intellectual challenge'.

In addition, the working environment, quality of life, and intellectual challenges are also extremely important to me.

If he had several months, the intellectual challenge would be stimulating.

"I personally feel this is a great intellectual challenge; it's very difficult and all that."

He said, "It was really an intellectual challenge to do.