World champion D Gukesh had himself to blame as he fell into a blindspot and made an unimaginable blunder to go down to Nodirbek Abdusatorov of Uzbekistan in a sixth round match of the Tata Steel chess tournament here on Saturday.

Top seed Arjun Erigaisi, meanwhile, benefitted from a similar oversight by Matthias Bluebaum of Germany to salvage half a point, while R Praggnanandhaa’s hunt for an elusive win went on as he was held to a draw by  Vladimir Fedoseev of Slovenia.