Lewis, B. "From Babel to Dragomans: Interpreting the Middle East", Oxford University Press, 2004. pg 16: "In another area the Persians are accredited with the invention of board games, particularly chess, which still uses a Persian terminology. " [۱]
Payne, R. "The splendor of Persia", Knopf, 1957. pg 49: "We owe a debt to Persia we can never repay. So much that is bright and glittering and desirable was invented by them. They were the first to invent angels, which the Jews borrowed during the Babylonian captivity, and the Christians borrowed from the Jews. The most beautiful of all decorated domes are in Persia. They invented chess and polo, and the first known highways for whecled traffic were the royal roads.. " [۲]