Fingers method "number to card" using any stack

Ignore this thread if you are using a mem deck stack such as Aronson or Mnemonica etc. because you already have "number to card" memorized. This thread is only applicable for stacks such as Harding, Seven Queens etc.

Well, I take that back a little bit because if you are just getting started with a particular mem deck you could use this technique and just have six cards memorized until you have the whole stack mastered. In the meantime you could do "number to card" effects.

Often times the algorithmic stacks can easily do "card to number" calculations but are more difficult doing "number to card" calculations.

An easy way to do "number to card" is to have the spectator hold up a different number of fingers on each hand (no thumbs). This to get a random position in the deck. The magician says "we will use the lower number as the first digit and the higher number as the second digit".

Note that this means there are only six possible positions for the magician or shill to memorize:
12=??
13=??
14=??
23=??
24=??
34=??
The question marks will be the cards for your stack at that position.

I am using the Seven Queens stack in the below example:
12=2H
13=4D
14=7H
23=5D
24=JH
34=3C
Memory technique for the fingers method of doing "number to card" for Seven Queens stack:
If first digit is 3 then 3C else
If 12 then 2
If second digit is 3 then add the two digits
1f 14 then divide by two giving 7
If 24 then 24-in high bumper jack
With the exception of 34 If second digit is an even number then hearts else diamonds.

Or just use brute force or some other method to memorize these six positions and their corresponding six cards for your stack.

This is the same method that other magicians have used except that their special deck force normally allows 12 possible positions because it gives the spectator the choice between which hand has the lower number whereas I am proposing here to not give them that choice (the hand with the lower number fingers is always the first digit) thus only six possible outcomes thus only six positions/cards to memorize to do the fingers method of "number to card" with a stack.

To use this fingers technique of doing "number to card" using the Seven Queens stack I go to my Mr Spock (Star Trek) memory palace:

Six stories associated with Mr Spock:

12 is high noon but instead of Gary Cooper or Clint Eastwood or Michael j Fox getting shot in the heart (with a steel protector) I think of Mr Spock getting shot in his two hearts (with a steel protector). Thus 12 equals 2H.

13 is unlucky number and Spock was unlucky in the 4th dimension (4D) when his planet was destroyed by the evil Romulan Nero. Thus 13 equals 4D.

14 is the number of heartbeats per minute that Spock has because each of his two hearts beats seven times a minute (not true but pretend just for this memory trick). Thus 14 equals 7H.

23 is the age of Spock's sister (he didn't have a sister but let's pretend) who wears a diamond ring on each finger (including her thumb) on her left hand. Thus 23 equals 5D.

24 is the number of inches high of a car jack that Mr Spock is pumping up and down. This Jack has red heart stickers all over it. Thus 24 equals Jack of Hearts.

34 is the age that Mr Spock attached the club symbol on top of his 3 finger spread Vulcan greeting. From a distance the Vulcan greeting looks like there is just three fingers (the thumb and two other fingers). Thus 34 equals 3C.