I say!
I noticed
this mental arithmetic test over at Opening Time, and it reminded me of a game I learnt at Rileys Bar, in Maun, some years ago. The snap at the bottom of this post shows a young Menzies IV outside the grill at the same establishment.
Anyway, the game is called Backwards Roman Viz Biz Buzz, and it is quite simple, once you get the hang of it.
Many people will have heard of the game Buzz. To play Buzz, you sit in a circle and in turn, progressing to the right, shout out numbers loudly, starting with ONE! then TWO! then THREE! and so on, until you reach a number with either a 7 in it, or a number which is divisible by 7. For those numbers, instead of shouting SEVEN! (or FOURTEEN!) etc you shout BUZZ. Shouting BUZZ reverses the order of who is to shout next.
Its quite simple. Viz Buzz is a variation. Shout VIZ instead of any number divisible by 3 (this does not reverse the order). Viz Biz Buzz is a further variation. Shout BIZ for any number divisible by 5, and this misses out the next person in order.
Roman Viz Biz Buzz involves shouting out Roman numerals instead of normal ones. i.e. I...II...III...IV... and so on.
Backwards Buzz involves shouting out numbers in reverse order, and one has to start at a reasonably high number.
Therefore, to play Backwards Roman Viz Biz Buzz, starting at 21, the sequence would be:
VIZ BUZZ (reverses order)
BIZ (miss out next person)
IXX
VIZ
BUZZ (reverses order)
XVI
VIZ BIZ (miss out next person in order)
BUZZ (reverses order)
XIII
VIZ
XI
BIZ (miss out next person in order)
VIZ
VIII
BUZZ (reverses order)
VIZ
BIZ (miss out next person)
IV
VIZ
II
I
As you can see, its a simple game, and I recommend playing after a few MGTs. If a participant makes an error, they forfeit something.
Maun was a particularly appropriate place to learn this game. I will tell you why, next time.

MM III