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
You only task in the opening is to reach a playable middle game.
Lajos Portisch
To Put It Mildly, I Have Not a Bit of Respect For Topalov
Vladimir Kramnik 2015
As a rule, pawn endings have a forced character, and they can be worked out conclusively.
Mark Dvoretsky
The blunders are all there on the board, waiting to be made.
Savielly Tartakower
When your house is on fire, you can’t be bothered with the neighbors. Or, as we say in chess, if your King is under attack, don’t worry about losing a pawn on the queenside.
Garry Kasparov