Perhaps spurred on by the potential win he lost in Turkey was he was rather ungracefully eliminated whilst leading, the Indian driver pulled off a marvellous move on Soucek around the outside of Les Combes after picking up his rival's tow.
Sweeping past on lap eleven, Chandhok was not worried to the chequered flag on lap 18 to come home a stunning winner and one that marks the highlight of his racing career.
Although likely to be disappointed to miss out on victory, Soucek would probably have taken a sixth and a second place finish before this weekend, the Spaniard breaking DPR's season points duck in style and finally proving his potential in GP2 Series racing.
Despite a concerted effort from Tung, who records BCN Competicion's best result of the season in fourth, di Grassi was an important third in light of Glock's failure to score anything more than the point he gained for fastest lap in the feature race. As such, the duo head into the final round at Valencia just two points apart, setting up a mouth watering tussle in Spain.
Fifth was occupied by a recovering Conway, who managed to haul himself back into contention after passing team-mate Filippi, Vitaly Petrov and also Villa, the latter having received a drive-through penalty for jumping the start.
His team-mate Filippi's hopes of holding onto the final points position however were ruined when Adam Carroll, recovering from starting towards the back of the grid, managed to complete the job he attempted in the first race before spinning, by snaring the sixth and final point.
Fastest lap meanwhile went the way of Lapierre, the Frenchman unable to recover from his stall but bolting on new tyres and gaining at least one points for his efforts.