Directed by Edward Zwick “Pawn Sacrifice” is a biographical film released on September 2015. The film stars Tobey Maguire as Bobby Fischer, the American World Chess Champion, considered one of greatest player of all time. His career's peak was in 1972 when he captured the World Chess Championship from Boris Spassky of the USSR.

We tried to dig a little in the biography of Bobby Fischer who many described as mentally ill. We tried to figure out what is reality and what is just legend about Fischer. Our goal is promote chess, and also honour the great Fischer. Moreover, we wanted to explore the scientific literature published about the benefits of playing chess, especially in childhood.

We made an exhaustive review of the author's life, and also testimonies of people who knew him. Moreover, we found some articles that review the relationship between chess and IQ trying to confirm or debunk some myths about this legendary game.

It was incomprehensible to everyone that the top of the career of Bobby Fischer at the same time meant an abrupt and complete fall. One possible explanation for this attitude would be a mentally unbalance not specified disorder throughout his lifespan.

Not all geniuses are crazy, neither all crazy are geniuses. A genius is a person with extraordinary capabilities, that focused on a topic, has the ability to enlight new ways to explain this complex world, whether it is to create a symphony, paint masterpiece or the next move on the chessboard.

The authors have not supplied their declaration of competing interest.