In Sassanid Persia around 600 the name became Chatrang and the rules were developed further, and players started calling Shāh! (Persian for 'King') when threatening the opponent's king, and Shāh māt! (Persian for 'the king is finished') when the king could not escape from attack. These exclamations persisted in chess as it traveled to other lands.
The game was taken up by the Muslim world after the Islamic conquest of Persia, with the pieces largely retaining their Persian names; in Arabic "māt" or "māta" مَاتَ means "died", "is dead". In Arabic, the game became Shatranj. In all other languages, the name of the game is derived either from shatranj or from shah.
At the start of a game, the Arabic masters took a number of moves before the pieces were in contact with the other side.
- "The result of this was that... the final position of the opening was the important one to memorise. Hence in almost all older Muslim chess-works we find... a collection of type-positions, each with its own distinctive name. [These] are recommended to the player as models for his imitation. Diagrams of these type-positions were a regular feature of Arabic chess-works down to the 17th century. These positions were called ta'biya (plural: ta'biyat or ta'abi)... which may be translated as battle-array".p234-5