Chess strategy 10 to 25 moves, when players develop their armies and set up the stage for the coming battle; middlegame, the developed phase of the game; and endgame, when most of the pieces are gone and kings start to take an active part in the struggle. A chess opening is the group of initial moves of a game (the "opening moves"). Recognized sequences of opening moves are referred to as "openings" and have been given names such as the Ruy Lopez or Sicilian Defence. They are catalogued in reference works such as the "Encyclopaedia of Chess Openings". It is recommended for
Tactical decision game fictional. If the scenario is based entirely upon a reliable historical narrative, a tactical decision game is also a "decision-forcing case". (Such an exercise may also be called an "historical map problem".) However, if any of the elements in the scenario of a tactical decision game is fictional, then the exercise is a kind of "fictional decision game". In Chapter 14 of "The Prince", Niccolò Machiavelli tells the story of the Greek general Philopoemon, who made extensive use of tactical decision games. “Philopoemon, Prince of the Achaeans, among other praises which writers have bestowed on him, is commended because in