If I may express my most humble opinion here.....It is an insult for one brilliant mind to be discovered in comformity. One shall not allowed to be analyzed by others for any reasons,unless the purpose of the study itself contain no rational solution to begin with.
I decided to post here because the topic arises from something I read in a book Philosophy Looks at Chess, to which another chess.com poster schack_2 also contributed a chapter. I am hoping maybe he has something to say to this issue. The first chapter is by Bernd Graefrath and is titled To Know the Past One Must First Know the Future: Raymond Smullyan and the Mysteries of Retrograde Analysis. One section of this chapter (p7) concerns Smullyan's rejection of the kind of 'logical positivism' that espouses strict verificationism. He wrote: "This doctrine regards as meaningless any statement that is incapable of verification or refutation" and gives the following retrograde chess problem as demonstrating how "ridiculous" the logical positivist position is.
This is captioned 'Indemonstrable mate in 2 moves'.
Here it is clear that white, whose turn it is, can force mate in 2 moves. The problem is that we are only given this position and do not know the moves leading to it. Therefore, we don't know if black's last move was e7-e5 or if black has previously moved king or rook and so lost castling rights. If one tries to 'demonstrate' a specific mate in 2 moves, it can always be argued that black's previous play is incompatible under chess rules with white's 'chosen' move. This situation is meant to illustrate the fallibility of verificationism.
However, it seems to me that one can demonstrate the solution, only not as a single set of moves. The solution is the indivisible package (A or B), unless or until the previous move is known. Without further information the past can only be known as (A' or B'). Once the past is revealed, a single solution can be demonstrated. If A' then A; if B' then B. Just because there is no single, unique solution given available information doesn't mean one cannot make a general statement about the solution, in this case 'mate in 2 for white'.
My question is: where is the problem with this interpretation of Smullyan's example? What am I missing??