Last three: 4down: @Observer' featuring the inventor of Gamesmanship briefly (7) S???T?R ( could it be spotter and if so why?) 9 across: Rattle perjaps in car (7) M?E?T?? (could it be maestro?) 23 down: A HOUSE IN gERMANY YOU AND i LEFT EMPTY (5) D?E?T (dwelt?)