Ding! Ding! Ding! We have a winner in Zax! 
Your turn, my friend.
Great! Here’s a new one:
Let’s start it off with an E!
I’ll ask for a T.
One T, but nary an E.
_ _ _ T _ _ _ _
Letters used: T, E
Any Rs please?
Any A’s?
Yes!
_ A _ T _ _ _ _
_ _ A R _
Letters used: T, E, R, A
What about S’s?
One S, which oughtta help.
_ A _ T _ _ _ _
S _ A R _
Letters used: T, E, R, A, S
Quite. If the last word is what we are now all thinking, then it makes sense to check how many more N’s there might be!
It is what you’re thinking, but the N won’t help.
_ A _ T _ _ _ _
S N A R _
Letters used: T, E, R, A, S, N
OK, well, we might as well have the F and any others.
Three Fs. You’re getting close…
F A _ T _ F _ _
S N A R F
Letters used: T, E, R, A, S, N, F
Faithful Old Snarf!
That’s it! Your turn, Liam.
OK, here goes:
Any S?
How about Ts?
Any Es?