I think Shelby Lyman had a boo-boo in his beginners problem last week.
He gives 1. Rh6+ Kg8 2. Qe6+ Qf7 3. Rh8+ Kxh8 4. Qxf7
Trivial win of course, but I can see how a
beginner could easily blunder after 4. ...Ra8, tho 5. Qb7 would be hard to miss.
Certainly a much cleaner way.