n-Steiner

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The Saavedra study , a Viersteiner

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n-Steiner , with n as the parameter from the natural numbers , describes a position in board games , especially chess , in which there are n pieces on the board. For example, the basic position in chess is a 32-stoneer, as there are initially 32 chess pieces on the board.

The term is mainly used in chess composition , in computer chess and in chess databases .

Special numbers of stones

  • In legal positions, Zweisteiner are those in which only the kings are on the board, which is trivially a draw.
  • Dreisteiner are positions in which one side still has a chess piece next to the king. These are mostly positions for beginners to practice elementary mate leads with queen or rook, or simple pawn endings .
  • Viersteiner can already be demanding chess problems - you can see, for example, Réti maneuvers or the Saavedra study . A chess composition with a maximum of four pieces is a "little stone".
  • Fünfsteiner have been completely recorded in endgame databases since the early 1990s .
  • Sechssteiner have been completely recorded in endgame databases since 2005, this was achieved with the help of the "Nalimov Tablebases".
  • Siebensteiners have been completely analyzed in their entirety since August 2012 and recorded in endgame databases, the "Lomonosow tablebases".
  • A chess composition with a maximum of seven pieces is a "miniature".
  • A chess composition with eight to twelve pieces is a "Meredith", named after a chess composer. This term is mainly used with two-passers.

Web links

Individual evidence

  1. ↑ chessok.com: Lomonosov Endgame Tablebases (English)