DUPLEX

A chess problem, in which both Kings are mated, having usually two help-mate solutions. In one solution Black plays first and helps White to mate the Black King. In another solution White plays first and helps Black to mate the White King.

When I am in the USSR, I have the feeling that every tram conductor plays chess better than I do. Hans Ree
Every chessmaster was once a beginner. Irving Chernev
Karpov Lost, Kasparov Lost, the Only One Who Remained Is Me. Silvio Danailov
2014
I think that ACP is a small clique, which gives power to more cliques. Nigel Short
2016
Looks like I’m going to raise the average age of the field and lower the average rating! Garry Kasparov
2017

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DUPLEX

DUPLEX

ECHESSPEDIA

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