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.
ECHESSPEDIA
Quotes of the Day
When you see a good move, look for a better one
Emanuel Lasker
Petrosian-Spassky? To think I could have watched an excellent football match instead!
Mikhail Tal 1966
Parapsychology? That’s a bunch of bananas. Korchnoi believes in that. He is still playing his game with the ghost of Geza Maroczy.
Nathan Divinsky 2004
Who was the greatest chess player? If chess is an art, Alekhine. If chess is a science, Capablanca. If chess is a struggle, Lasker.
Saviely Tartakower
Kasparov’s book are the best, as far as high level analyses are concerned.
Jan Timman 1991 NIC