turing related questions

[Velocity]

What is it you are trying to achieve?
<Replace all the <> with your answers/code and remove the <>>


What is the problem you are having?
<Answer Here>


Describe what you have tried to solve this problem
<Answer Here>


Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)
<Answer Here>

Turing:

<Add your code here>

Please specify what version of Turing you are using
what does it mean to trace, and swap values? also what is multiple guesses?