fburton, are you - like me - talking about tabia in chess?
What's a tabia?

fburton, are you - like me - talking about tabia in chess?
Yes, definitely chess - no messing about. I believe tabiya is an alternative spelling of tabia.

Yes, I think it's spelled in various ways. As to your question, I don't think these is a fixed number of tabia.

Tabiya Arabic word originally meaning the opening setup of pieces, but now more commonly used to mean the standard moves of any opening, i.e. the real game starts after the players play the tabiya
the meaning of "tabiya/tabiyah/tabia."
After due consideration I think that, as Emanuel Lasker pointed out - chess is a fight. I believe, therefore, that tabiyas are akin to battle positions. These can be either standard in nature, as in positions that are the result of regularly visited opening sequences or may be personal, whereby a player attempts to reach his own preferential position(s)or tabiya(s).
Often such tabiyas are seminal and full of tactical/positional nuances as in the Sicilian Dragon, for example.
I would also like to suggest that there exist "ideal" tabiyas such as optimum positions to aim for in, say, pawn endings (as well as in openings).
Thus, in sum, there may be Standard, Personal and/or Ideal tabiyas - and these are not necessarily mutually exclusive.
Thanks for making me look :)

To say that a tabia is "the standard moves of any opening", I think is wrong. I think a tabia is a position (which is static), not a sequences of moves (which is dynamic).
My attempt at a definition in post #5 is rather good, I think.

I disagree cigot...There are so many first opening moves ....Just because the next move might be the better move does not make it the move of some mindless chess player. They / we all have a choice and that is what the next move will really end up being..

So a tabia is any (opening) position where the player to move has a valid choice to make? Would that be a meaningful definition? Obviously there is always plenty of choices. For example, after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5, White could play any one of the 25 legal moves. However, only one of them (7. Bb3) makes any sense. Therefore, this is not a tabia, since the next move really isn't a choice, since it's more or less dictated. But after 7. Bb3, Black has a choice to make (most likely between 7...d6 and 7...O-O), and we're now at a crossroad - at a tabia. Does this sum up the concept of a tabia?
Well you say its a move where the player has a valid choice. It really is just the first move made. You also say that if the next move is dictated then it is not a Tabia. If I make a choice to move dictated or not its still my choice and that makes it a Tabia. :)

So a tabia is any (opening) position where the player to move has a valid choice to make? Would that be a meaningful definition? Obviously there is always plenty of choices. For example, after 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5, White could play any one of the 25 legal moves. However, only one of them (7. Bb3) makes any sense. Therefore, this is not a tabia, since the next move really isn't a choice, since it's more or less dictated. But after 7. Bb3, Black has a choice to make (most likely between 7...d6 and 7...O-O), and we're now at a crossroad - at a tabia. Does this sum up the concept of a tabia?
Well you say its a move where the player has a valid choice. It really is just the first move made. You also say that if the next move is dictated then it is not a Tabia. If I make a choice to move dictated or not its still my choice and that makes it a Tabia. :)
No, I do not. I say it's a position from where the player has a valid choice to make. I'm not saying it's a move. A position isn't the same as a move.
Related question: roughly how many tabiyas are there?