.EMD ファイル拡張子

An EMD file is a tablebase used by a chess-playing program such as ChessBase Fritz. It contains a database of moves the program uses to play endgame sequences. Using EMD files, rather than procedurally selecting individual moves, speeds up chess-playing programs' endgame play.

ChessBase Fritz is a chess-playing program that allows users to play chess against a variable-difficulty AI. Programs like Fritz use endgame databases, more commonly referred to as tablebases, to play specific endgame sequences perfectly. For example, if a game has entered an endgame state in which the human player has only a king and queen, and Fritz has a king, rook, and bishop, Fritz can use related EMD files to select its moves for the rest of the game.

Each EMD file contains data on a specific endgame state, in which each player has a specific set of pieces left. To help them play more quickly and effectively, chess-playing programs can "thread" EMD files together or reference the files while selecting procedurally-analyzed moves. This allows the programs to better plan for and work toward future advantageous game states.

In ChessBase Fritz (Windows), you can install EMD files by:

1. Selecting Tools → Options → Tablebases.
2. Specifying the path(s) to your EMD files in the Path field(s).