at http://commons.wikimedia.org/wiki/Category:Kolkata_Meetup_W10
Many thanks to Biswarup Gangulyhttp://commons.wikimedia.org/wiki/User:Gangulybiswarup for the step-by-step documentation till the cake-cutting.
And to Jayanta Nath and Arnab Dutta, for making this happen so beautifully.
Bishakha