Vietnam Grand Master Nguyen Duc Hoa clinched a decisive win against Indian GM Neelotpal Das in the 10th and concluding round to finish with 8.5 points and emerge champion of the 10th Mumbai Mayor's Cup International Open Chess Tournament on Sunday. The Vietnamese GM held his nerves and with some clever moves managed to outsmart the Indian GM to snatch a creditable win and the full point which secured him the victory and the top honours in the Rs 29-lakh prize money tournament. The champion went home richer with the top prize of Rs 3 lakhs, while top-ranked Tajikistan GM Farrukh Amonatov (ELO 2635) took home a cheque of Rs 2 lakhs by finishing runner-up.