Harika was the favourite to win as she was considered to be a better rapid and blitz player than Tan. But the Chinese showed she had nerves of steel.
We will have to wait for the tournament to end to know what Harika Dronavalli did on the night before the second game of her semi-final, but whatever she did, it was perfect.
Women’s World Chess Championship: Harika Dronavalli's tactic of conserving energy till rapid games has served her well
Harika stuck to her simple strategy - don't try too hard in classical battles and finish off your opponents in the rapids.
Interview with Baskaran Adhiban, India's No 3 chess player: '2750 is the next barrier that I am aiming for'
Meet Baskaran Adhiban, who started the Tata Steel Chess tournament as the last seed and finished third behind Wesley So and Magnus Carlsen.
The Indian challenge at the event is represented by grandmaster Harika Dronavalli and international master Padmini Rout. Both the players won their first round.
Anand, Harika, Humpy perform well at the World Blitz Chess Championship, but not good enough for a medal. India return empty handed.
World Rapid and Blitz Chess Championships: Anand not as dangerous as before, but still a medal contender
Covering a 2.5 point deficit of Carlsen and Karjakin won't be easy for Anand, but he is still with a chance.
World Rapid and Blitz Chess Championships: Vidit Gujrathi shines for India; Vassily Ivanchuk is the Champion
Vidit Gujrathi turned out to be the hero for India as he scored 9.5/15 and finished eighth at the World Rapid Chess Championships 2016 in Doha, Qatar.
As far as Anand is concerned, he has been in such pressure situations throughout his career. For Vidit this is a new scenario.
At the World Rapid and Blitz Chess Championships 2016, Indian grandmaster Surya Shekhar Ganguly had a great opportunity to beat Magnus Carlsen but let him off the hook.
"Every loss or draw is a setback. You can only take it one game at a time. Two steps forward, one step backwards seems to be the normal pace," says Wesley So.
Every time he is down in the dumps, Viswanathan Anand rises from the ashes like a phoenix and gives a fitting answer to all his detractors who want him to retire from the game.
After a novelty against Wesley So, Viswanathan Anand showed the world that he had more tricks under his sleeve by uncorking another interesting novelty against Veselin Topalov.
It seemed as if Viswanathan Anand's king would be mauled and Anish Giri would score his first victory, but due to some inaccuracies, he let Anand secure his king and the game ended in a draw.
Against tournament leader Wesley So, Viswanathan Anand played a completely fresh idea. The move came as such a shock for Wesley that he didn’t make his next move for 30 minutes.
Although Viswanathan Anand is currently in the seventh position, the scores clearly show that a win or two will propel him right to the top.
Viswanathan Anand played really well in the first round and made a draw with the black pieces against world number two Fabiano Caruana.
The London Chess Classic has not really been a happy hunting ground for Anand. He hasn't been able to emerge as the champion.
Magnus Carlsen is undoubtedly the greatest chess player alive today, as the manner of his World Championship win proved.