book moves resulting in checkmate with the blackburne shilling gambit?

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Frank_Visser
Hello, the moves i inserted are a win for black with blackburne shilling gambit. However, if you put this in stockfish on chess.com it will show an accuracy of 100 for both players, since they're bookmoves. Does anyone know how this is possible?

Alramech
Frank_Visser wrote:
 
Hello, the moves i inserted are a win for black with blackburne shilling gambit. However, if you put this in stockfish on chess.com it will show an accuracy of 100 for both players, since they're bookmoves. Does anyone know how this is possible?

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.