Problem chess: The Self-block
It is one of the building blocks of the chess problem: Black (the defending side) is forced to block flight squares in the king's field and thus enable mate. Our problem expert David Friedgood demonstrates this with a remarkable problem with a record of eight self-blocks arguably the most perfect two-mover ever composed. There are also two self-block problems for you to solve.
Posted: Tue 21 Feb 2012