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
Botvinnik, Korchnoi and Kasparov had to hate the opponent to play successfully. I belong to a different type of chess players. I’m like Keres, Spassky and Portisch. On the board we fight, but in life we get along great.
Anatoly Karpov 2015
Vugar Gashimov deserves to be immortalized!
Mahir Mamedov 2014
Botvinnik and Tal are among the best; I also like Spassky, but I think Petrosian is better than all of them. His weakness is too many draws, even against players he could beat easily. Maybe he lacks self-confidence.
Robert Fischer 1960
Carlsen will sooner or later become World Champion. I like him, he is a Monty Python fan, just like me.
Vishy Anand 2008
We will note the openings used by the participants of a nine-round match. The age of openings is considerably higher than the age of both rivals. Some opening positions could be analyzed by Steinitz when he was preparing to his match with Zukertort.
Mikhail Tal 1966 (Petrosian-Spassky match)