How small is too small for a chess board to take to the club?


I think you´ll find it hard to play chess on any board larger or smaller than 8x8. 64 squares is what´s required (sorry, I couldn´t resist...). Seriously I don´t see the point in bringing anything smaller than tournament sized sets to a club. For travel anything goes and I use a wooden, magnetic, 7x7 (with bordersso the actual playing field is slighly less than 6x6). It´s serviceable for analysis and casual play but nothing I would bring to a club.