The Poisoned Pawn Variation...

12/17/2009 – ... of the Najdorf used to be one of the favourite weapons of Bobby Fischer when he wanted to play for the full point (i.e. practically always). Nowadays many lines have been analysed out to a draw, yet the fascinating complications keep on attracting players. This position occurred at the last Bundesliga weekend. After 28...Ra7, which assessment is true in your opinion: A) Black has a won position; B) White must give perpetual check; C) he actually wins. The solution is here, but first ponder over it with a  larger version of the diagram.