JOIN USA birdie-blitz on the front-nine helped the 16-year-old card the best round of the tournament and end with a total of seven-under 273, a massive eight shots clear of the nearest challenger.
Khalin Joshi, also from Bangalore, carded 68 to edge ahead of Ashbeer Saini.
Placings: Category A: 273: Chikkarangappa (68, 69, 70, 66); 281: Khalin Joshi (71, 70, 72, 68), Ashbeer Saini (68, 70,72, 71); 286: Raghav Bhandari (72, 68, 75, 71); 289: Trishul Chinnappa (76, 71, 73, 69), Ankur Chadha (71, 69, 72, 77).
Category B: 293: Aman Raj (75, 74, 71, 73), 297: Honey Baisoya (74, 75, 71, 77); 300: Roshan Raj (77, 71, 78, 74); 305: Manu Gandas (76, 74, 85, 70); 306: Arjun Singh (75, 77, 76, 78).
Category C: 297: Viraj Madappa (69, 75, 78, 75); 298: Feroze Garewal (74, 72, 72, 80); 300: Piyush Sanghwan (77, 74, 73, 76); 302: Tutul Ali (77, 79, 73, 73); 307: Vidit Singh (75, 72, 79, 81).
Category D: 241: Arjun Puri (82, 82, 77); 247: Karandeep Kochhar (85, 82, 80); 249: Arjun Prasad (85, 80, 84); 252: Kshitij Kaul (86, 85, 81); 256: Jaiveer Singh (85, 84, 87).