Three Coaches, Three Athletes and a River

 
Three Coaches, Three Athletes and a River

Problem statement:

There are three Athletes (Alex, Brook and Chris) and their individual Coaches (Murphy, Newlyn and Oakley) standing on the shore. No Coach trusts their Athlete to be near any other Coach unless they are also with them. There is a boat that can hold a maximum of two persons.
 
How can the six people get across the river?

Done thinking? Click here to view the solution.

Alex and Brook cross, Alex returns.
Alex and Chris cross, Chris returns.
Coaches Murphy and Newlyn cross to join their Athletes.
Brook and Newlyn return.
Newlyn and Oakley cross, Alex returns.
 
All three Coaches are across.
 
Alex and Brook cross, Coach Oakley returns.
Chris and Coach Oakley cross.
 
DONE!