Four golfers in a square in two teams of two - who tees off second given that one person is diagonal from another? !enter image description here I am not sure if I am interpreting the question correctly _per se_. I drew a picture in which Clark was diagonal from Diana. So, that means Chris could either face Clark **OR** Diana. If Chris is facing Clark, then Chris tees off first and Diana tees off second. If Chris is facing Diana, then Doug tees off first and Diana tees off second. Either way, Diana tees off second. Did I interpret the question right? The part about "Chris is facing the person whose name begins with the same letter as that of the name of the person who will tee off first" sort of tripped me up a bit. I used this piece of info to determine that Diana tees off second and it is impossible to know who tees off first.

Your reasoning is correct if we assume that

> **the person whose name begins with the same letter as that of the name of the person who will tee off first**

is to be understood as different from

> **the person who will tee off first**.

This isn’t the only possible interpretation: if, for example, Diana tees off first, her name does begin with the same letter as that of the name of the person who tees off first!

However, without this assumption the problem is insoluble, so presumably we’re intended to make it.