In reply to Doug miller:
> How does the scoring work in completion bouldering?
Black magic
> So what does the score... 3t5 4b6... Actually Mean?
t stands for Top, which means you held the final hold with both hands 'under control'
b stands for bonus which means you've used the bonus hand hold 'under control' to progress.
The first number is the count of successful holds, the second the number of attempts to achiebe that scoe, on those particular problems, all added together.
So 3t5 means 3 tops but it took 5 attempts to get there, either 1+1+3 or 1+2+2 attempts on those 3 problems.