Shatranj, the predecessor of modern chess
en.wikipedia.org
en.wikipedia.org
The Kushan were a possibly Iranian or Tocharian, Indo-European nomadic people who had migrated from the Tarim Basin and settled in ancient Bactria. These are the same people as the famous tartan-wearing Tarim Mummies. https://en.wikipedia.org/wiki/Tarim_mummies (text) and https://encrypted.google.com/search?tbm=isch&q=tarim%20mummi... (images)
Note the grid layout of the tartan. I wonder if there are any art history papers on hypothesized sacred geometries of early, pre-Islamic Central Asia? (We know that, for example, by 2600 BC, Mohenjo-daro and Harappa, major cities of the Indus Valley Civilization (present-day Pakistan), were built with blocks divided by a grid of straight streets.)
(Edit in response to below: Read onward, ie. http://en.wikipedia.org/wiki/History_of_chess#Origin ... nobody is disputing chaturanga, the above refers to the pre-chaturanga origins of chess-like games.)
Can any competent Persian readers consult Persian language sources to determine an Iranian take on the etymology of the word? Wiktionary at http://en.wiktionary.org/wiki/shatranj states the following etymology for the modern English loan word: "From Arabic شطرنج (šaṭranj), from Persian شترنگ (šatrang), from Middle Persian ctlng (čatrang), from Sanskrit चतुरङ्ग (čaturaṅga)."
(Edit: 1. Arabic does not derive from Farsi .. (Obviously) I was referring to the Arabic word in this case being a loan-word from Persian. 2. Arabic was written before farsi was An interesting tangent... it seems you are correct if limited examples of pre-standardized Arab-region languages written in pre-Arabic scripts are considered, which were allegedly circa 0CE written in Aramaic ... but {{citation-needed}} on relevance to anything at all, really.) ... TLDR; Arabic as a cultural or linguistic force appears to begin with Islam, ie. far later, whereas Persian had weight far earlier, ie. in the period under discussion.)
Also, Farsi and Arabic have different roots. Farsi did not start using the Arabic alphabet until ~700 AD. Modern Farsi does have a lot of Arabic words used because of Islam.
chatur-anga = four limbs (or perhaps four body parts, I'm not sure)