Originally posted by BigDoggProblemThis is a difficult, yet beautiful problem, so I am not surprised nobody solved it.
R. Albrecht, Deutsche Schachblatter 1980
[fen]1b1Kn3/k5N1/2Qp1p2/3p4/pN1p4/6P1/r6p/4Bq2 w - - 0 1[/fen]
Originally posted by THUDandBLUNDERAn excellent question.
How do you answer 1...Qc4?
Originally posted by BigDoggProblemUnfortunately, I have not been able to find Albrecht's problem online. Nor can I determine how to correct the problem (this would take someone who has more skill composing directmates!).
An excellent question.
I could not see a mate and my book doesn't give this line and I triple-checked the diagram. It matches the book. My solving program confirms no mate in 8 after 1...Qc4. So it's no wonder nobody solved it. I apologize to those who have spent time on this.
I will investigate and try to determine where the error is. It will be difficult since the book is likely in error.
Originally posted by ilywrinFinally! I believe I've found the error. Add a black pawn on c7, and the position is:
Perhaps there is a white pawn missing on b3?
Originally posted by BigDoggProblemAfter 6 and a half hours, the program confirms 1.Kc8! is the only solution.
Finally! I believe I've found the error. [b]Add a black pawn on c7, and the position is:
And my solving program confirms 1.Kc8! is the solution, with the main line as given previously. Now all that's left is to verify that there aren't any other solutions.[/b]