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http://youtube.com/@shadyantra Shadyantra was invented in India and Shri Lanka because Shri Lanka was part of india 8800 yrs back. Initially it was named as Dhyut and cursed by Draupadi and Kalyug. Shadyantra is system and played as per Shadgunya. It is based on 10×10 board called Dashpaad or Dashpada. Chaturanga was evolved from Shadyantra in 200 BC after it was latter was banned. And Chaturanga was played on 8×8 board called Ashtpada or Ashtpaad