In April 2009, he won the Doeberl Cup, against a strong field and got his second GM norm. In 2010, he tied for the top position with Tigran Gharamian and Vadim Malakhatko at the 24th Open Pierre and Vacances, thereby completing his Grandmaster Title. He tied for first with Arghyadip Das in the 2010/11 Hastings Masters tournament and won the event on tie-break. In 2011 he tied for 2nd–7th with Maxim Turov, Viacheslav Zakhartsov, Krisztian Szabo, Lev Gutman, David Berczes and Samuel Shankland in the ZMDI Schachfestival in Dresden. He was placed 4th in the Indian Chess Championship 2012. Deep won the 2014 Commonwealth Chess Championship held in Glasgow. He emerged as champion by edging IM Aravindh Chithambaram on tie-break. Both players concluded the event with 7.5/9 points each.  He won the Hastings Masters tournament in 2016, being a clear winner with 7/9 points. This led to his name being embedded in the Golombek Trophy once again.
He works for the Oil and Natural Gas Corporation of India. He has an elder brother named Pratik Sengupta who plays chess as well.
- Deep Sengupta rating card at FIDE
- "Deep likely to be awarded with the GM title". The Times Of India. 9 March 2010.
- Thaker (2010-03-09). "Finally, a Grandmaster from home". The Telegraph - Calcutta (Kolkata). Retrieved 3 April 2011.
- "Deep, Soumya Become Junior Champions". All India Chess Federation. Archived from the original on 26 July 2011. Retrieved 3 April 2011.
- "Tigran Gharamian wins Pierre and Vacances open". Chessdom. Retrieved 8 March 2010.
- "Indians Sengupta and Das win Hastings". ChessBase.com. 2011-01-06. Retrieved 6 January 2011.
- "ZMDI Schachfestival Dresden 2011 Gruppe A". World Chess Federation. Retrieved 21 December 2011.
- "GM Sengupta Deep claims Commonwealth Chess Championship 2014". Chessdom. Retrieved 10 July 2014.
- "Deep Sengupta victorious in Hastings". ChessBase.com. 2017-01-07.
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