It's really poor when the setter cannot spell words and the person solving the puzzle is penalised. I typed centre and was marked incorrect because the setter had put 'center' (sic).
(5 years, 1 month ago)
Wiz
Just an American speaking ,Richard. Nice grid.
(5 years, 1 month ago)
Wiz
Or spelling I mean...
(5 years, 1 month ago)
Spengler
Yeah Richard - there is no Rockefeller Centre nor Staples Centre.
I'm a brit but was able to anticipate the correct American spelling.