Four women - Aisha, Bani, Chandana and Deepali - and three men - Edward, Frazer, and Gautam - play Ludo, a board game for four players.
Over a period of months, a weird playing pattern was observed, which is as follows:
1. Among the seven players, there were three married couples & a Spinster.
2. The members of each married couple were never partners in a game of Ludo.
3. No more than a single married couple ever played in the same game.
4. One night, they played four games of Ludo, in which the partners were as follows:
Aisha & Edward v/s Bani & Frazer
Aisha & Gautam v/s Deepali & Frazer
Bani & Chandana v/s Frazer & Gautam
Chandana & Edward v/s Deepali & Gautam
Identify the Spinster. Provide a detailed explanation along with your answer.