@MartinS saidYou, of course, meant to say 641 - number of squares on 10 chess boards plus 1
640 - the number of squares on 10 chess boards
(Of course, there are MANY more squares on a chess board....lots of 2x2s, 3x3s etc)
643. Surprisingly, to me, a prime number.
@Kewpie saidas a PS - I can count the number of posts but not all were about number continuance an so is out of balance with the number someone thinks we are up to.
That was 641. Check the number of posts shown on the Thread List.
And 6 - 4 = 2.
Anyway,
Good bye and best regards to this thread