The highly intelligent, Krishna had, in the very beginning understood the object of Dhritarashtra, and had, therefore, kept such a contrivance ready for baffling them.
प्रागेव तु महाबुद्धिर्बुद्ध्वा तस्येङ्गितं हरिः। संविधानं महाप्राज्ञस्तत्र चक्रे जनार्दनः॥