Maybe change the "10" to "T", so that it's one character, just like all other ranks.

I'm still getting small discrepancies in the payment function, for example:

$89778 in cash was used to pay for $45383: 44390 should equal 44395

I don't know how to debug this.

If the test for total() already passed, why wouldn't this work?

In the example given in the description, where you say "miles per revolution", do you mean "revolutions per mile"? I'm treating it that way in my solution, and it's working.

How sure are you of your implementation? I'm only asking because I'm consistently failing ~50 random tests every time I run the trainer, but pass everything else.

Just so we're clear:

• the winning player for each hand takes all of the played cards during that hand?
• any round where one player doesn't win all of the point cards is considered a failed shooting the moon?