Someone (thanks again, mittfh) has been intrigued by the working of Jeffrey/Denise's cute card hustle in the last chapter of 'A Quiet Night In'.

http://bigclosetr.us/topshelf/fiction/20170/susie-and-jeffre...

Susie and Jeffrey have used this as an excuse to engage in a little Siscratic dialogue about the maths behind the trick. They've added a rambling comment explaining why, in this case, 729 is the answer to life the universe and everything. If a minority of a minority of a minority are interested, it's at -

http://bigclosetr.us/topshelf/fiction/20170/susie-and-jeffre...