All was well reading this interesting article at Frontline online magazine (published by The Hindu):
The rise and fall of a Harappan city
Volume 27 - Issue 12 :: Jun. 05-18, 2010
Come on dude, who do you think you're kidding? That gameboard fragment certainly looks like a part of a 20-squares game, played in Sumer, Egypt and throughout the Middle East. The game pieces resemble Egyptian "spool and reel" game pieces. The existence of these fragments in Dholavira, now identified as one of the five largest Harappan sites, is fascinating and deserves further research. But the author took a cheap shot when he tossed the photograph of the fragmentary gameboard and pieces into this article, with no further explanation. A "puzzle" - yeah, right. I'm sure Indian archaeologists know about the 20-squares game, and about trade. Now THAT would be a story to develop - talk about the trade among the great cultures of the time and how games travelled with the merchants from place to place.
Leonard Woolley is credited with excavating perhaps the oldest-known examples of the 20-squares game, at Ur ("royal tombs of") dated to about 2600 BCE. Unfortunately the wood that the boards was made out of had long disintegrated, but the intricately carved ivory, shell, stone and metal insets that decorated the boards were meticulously preserved, so much so that the gun-ho "archaeologists" of the day were able to reconstruct what they looked like.
New Kingdom, Dynasties 18-19, ca. 1570-1069 B.C.
All of this is well-documented in archaeological archives, and one does not have to be a "games expert" to know about these famous finds or do an eyeball comparison of these boards to figure out what the stone gameboard fragment found at Dholavira most likely was.