Poker writer Peter Sharkey is impressed by Brent “The Enigma” Wilkes’ power of concentration at the card table:

Brent Wilkes should exploit a gap in the market – for poker players’ benefit

Just how good are you at blanking everything out and concentrating fully upon your poker?

The level of concentration necessary to be successful is startling as you need to keep a constant eye on how play progresses and how individuals react to winning as well as to defeat. If you’re having problems away from the table and they begin to prey on your mind, it’s invariably curtains for your game.

Of course, there are short cuts to achieving a level of focus few other pursuits require. Switching on an mp3 player or donning those mirrored lens shades are two of the most popular – and effective, but there’s no substitute for heading to the felt with a clear mind.

So imagine you had been convicted for bribing a government official and received a 12-year prison sentence. That’s bad enough, but assume you’ve been free on bail for more than two years, pending an appeal against your sentence. Seems you would have your plate pretty full eh? And probably not much time to partake of a few hands of poker.

Not Mr Brent Wilkes, a 56 year-old former defence contractor who was convicted of conspiracy, bribery, money laundering and wire fraud in 2007. Mr Wilkes was freed from prison in February 2008 pending an appeal, which finally got under way on Monday.