Bobby Fischer never said he was tortured, for one. He said he didn't want to get extradited to the US because he thought he would be tortured (a legit fear). He said the Japanese gov't was corrupt gangsters (also legit). He also said he was roughed up when he was arrested and chipped a tooth (totally possible). But the confluence of those statements, along with his other CT-heavy statements, fit nicely together with a "Bobby Fischer Super-Genius Spy" biography. But it's not real. He was a brilliant chess player, but he was unable to sustain that level of performance. Most likely because the same mental aberrations that made him so effective at chess made it impossible to have normal human relationships.
In reality, this is GW Bush going full-Lannister and paying Daddy's debt. GW was facing a tough close election when Fischer was detained, and when Bush won the election the Japanese denied his asylum claim.
Fischer clowned Papa, so Junior called on his old buddies in Japan to make Bobby's life miserable for a year. If Iceland hadn't stepped in, who knows what the Bush's end game was going to be. Once you're in the system, it's really hard to get out.