A theme in problems where four black interferences are included by four possible moves of two black pawns. The two pawns, by the very conditions, must stand on their original squares (BCM 55/245).
ECHESSPEDIA
Quotes of the Day
The main thing is that you’ve got to keep on studying however old you are. You can’t just rely on your capital, so you have to try and keep up, and that is a difficult task.
Nigel Short 2016
The Golden Age, when machines were weak and my hair was strong!
Garry Kasparov 2017
When Korchnoi was living in the USSR I called him ‘hero of socialist labour’; when he moved to the West I renamed him ‘hero of capitalist labour’!
Boris Spassky
Time trouble is blunder time.
Alexander Kotov
Karpov, Kasparov, Korchnoi have absolutely destroyed chess by their immoral, unethical, prearranged games. These guys are really the lowest dogs around, and if people knew the truth about them, they would be held in more contempt than Ben Johnson, the runner, and they’re going to know the truth when I do this book!
Robert Fischer September, 1 1992