The second semifinal tomorrow will see reigning Asian snooker champion and an in-form Aditya Mehta take on former Asian champion Alok Kumar.
Local crowd-puller Kothari faced some resistance from Andhra youngster Himanshu Jain before prevailing 4-1, while Chandra outclassed Jain 4-0.
Fresh from winning the Asian title in Doha, Mehta knocked out India's No 2 Kamal Chawla of Railways.
Mehta started the match with a fancy break of 81 points on the board. Mehta replied in the same fashion scoring 80 points to level the game 1-1.
In the third frame, Mehta again stood strong and produced a break of 40 points but fumbled on a selection of shot, leaving Chawla with a good opportunity to take on.
Chawla replied well but could not manage to finish with frame-win and gave another chance to Mehta where he completed the formality.
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Mehta's break of 81 points in fourth frame almost diminished chances of Chawla to be in semis.
Already trailing 1-3, Chawla made only 24 points in the fifth frame before bowing down to Aditya 1-4.
Aware of Damani's home support, Alok opened the first frame with a break of 45, making his intention loud and clear. (More)