As human beings, we know that there are different aspects of intelligence. Often, innovation and creativity are considered to be higher levels of intelligence, whereas the ability to calculate is considered to be a lower level of intelligence. Mere calculational ability alone does not imply intelligence. For example, even a top scientist may not be able to compute the square of an 8 digit number, but a computer would be able to do it in a fraction of a second. However, a computer cannot do many of the things which humans are capable of, like invent a new device, or discover new science. It is a credit to the human intelligence that he is able to invent a device - the computer - to do things he would not be able to do ordinarily, just as other devices such as cars, aircraft, etc. have been invented.
Computers don't use real intelligence for playing chess, they just calculate millions of moves until they find an advantageous combination. Does this prove that chess is just about calculational ability and does not really involve any real intelligence?