Preamble
Igwobt is an international competition between opening books relayed on gsei site.
The elo is calculated by reference to the chess engine without the book (Stockfish - None selected book).
In this way it is possible to understand what is the added value by the book to the chess engine reference.
The opening books with elo bigger than 0 are recommended.

Rules
Each participant must be an original work; no opening book clones, please;
Abk (arena) and bin (polyglot) allowed

I.G.W.O.B.T.
The tournament will be composed of only 2 round robin.

GUI and chess engine condition
  • Gui - Arena 3.5.1
  • Time control - 15' + 10"
  • Adjudication - Adjudicate as a loss below -900 centipawns and result from tablebase
  • Chess engine - Stockfish 8
  • Cores - 2
  • Hash table - 1024 MB
  • Ponder - Off
  • Learning - Off
  • Tablebase - Yes

  • Opening books configuration
  • Abk use transposition - on
  • Abk use book up to halfmove - 9999