CHESS -

Yet another Jeopardy Clue of the Week. Keep watching what the thumbnails are doing!
The music at the beginning and end are pieces of the October 2008-present Jeopardy! Theme.
Here is the clue in text form:
A: This late champ patented a now-standard chess clock that gives players added time after each move.
Produced using CyberLink PowerDirector 14.
LEGAL STUFF: All visual content is my own original creation. The JEOPARDY! trademark and the "Think" Theme music are property of their respective owners. I do not own the music, the JEOPARDY! name, or any rights to them.

[@nouse3771]

Bobby Fischer

[@AlexSh789]

Ah, ah, ah, you forgot to phrase your response in the form of a question ;)