You cannot post consecutively resets counter to zero i.e.

poster A) 1

poster A) 2

poster A) 3

poster A) 4

No ping ponging - by this you cannot post back and forth between two posters resets counter to zero.

poster A) 1

poster B) 2

poster A) 3

poster B) 4

Consecutive posts of the same number, or posts with numbers out of sequence - reset the counter to zero.

Poster A) 5

Poster B) 5

Poster C) 5

Anyone can post the next consecutive Number in the series from at any time.

Let’s see how you do.

I’ll start you off

1