book moves resulting in checkmate with the blackburne shilling gambit?


It's pretty clear that Game Report awards full points for any of its book moves. I believe this change was made early this year or late last year. This is different to some of the previous Game Report algorithms which modified accuracy rating on the book moves as well.
Overall, it broadly makes sense not to adjust accuracy for book moves, but this is a funny case you found which clearly shows an edge case weakness.