The 2003 world champion Advani overpowered young Tomasz Skalski 4-2, but not before he faced the threat of being knocked.
Skalski surprised Advani, one of the hot-favourites of the tournament, by winning the first two frames 81-49 and 47-37, but the 12-time world title holder bounced back by winning the next four games on the trot.
"What's good about Advani is his composure when things are not going his way. I have seen many players giving up in such situations, but Pankaj is made of different mettle - he revels in crisis and he did yet again," Sree, Advani's brother and sports psychologist said.
Chandra chalked up first two frames in his favour, 71-6 and 67-41, but could not win the third, when he seemed all set to pocket the match.
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The Pakistani roared back to reduce the deficit to 1-2, winning the third frame 85-28. The Indian then claimed the fifth (67-12), with the overall score reading 3-2 in favour of Chandra.
Keeping his composure, Chandra produced an unblemished display to snooker the chances of Asif 95-0 in the sixth frame with his useful and effective breaks as he interspersed his attacking game and safety play to perfection.
Kamal wrapped up a 3-0 lead but Adrian was unruffled as he came back from the brink to bag the next four frames in a row with breaks of 42 in the sixth and 46 in the decider being the highlight of his gutsy performance.
The 2013 runner-up Zhao Xintong of China had breaks of 81 and 83 enroute to a 4-0 win over Antonis Poullos of Cyprus while Jamie Clarke of Wales produced the highest break of 133 in his 4-1 win over Farhan Mirza of Sweden.