Chess problem: 7 days ago

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Bruno's Chess Problem: 09/20/2021

M.Marandjuk, Avramenko, Olimpijsky Konkurz, 1972

Mate in 2(****)
chess problem diagram
White to play

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1. Qb5! ... 2. Bd2#
  1... Ke3 2. Rxf3#
  1... Kg5 2. Ng6#
  
1. Ne6!+
  1... Kf5 2. Rxf3#
  1... Ke3 2. Ng4#
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2021-09-20 16:48:25, by slowbut2
"what is needed ... is ... yearning for truth" , and it is advised to know the nature of the achievable truth and to know the nature of it being risky investment where total success can come without financial success.

2021-09-20 15:29:12, by problemist
"Incorrect" refers to the usual chess problem terminology: "cook: A second key move, unintended by the composer. A cook is a serious flaw, and invalidates a problem." I know that Bruno sometimes poses cooked problems with 2 solutions, but also problems in which multiple solutions were intended. In the first case the problem is incorrect regardless of Bruno's stipulation. Starting from today we should expect a cook also if not indicated by Bruno :-)
2021-09-20 10:46:18, by slowbut2
thank you, problemist.
i still don't get it, since if it would be offered as a 2-soulutions problem then that would make it ok - so "is incorrect" might be too harsh :-)
2021-09-20 07:38:06, by problemist
I did not find a correction. The problem was awarded a 5th HM, so probably the cook was found only later by routine computer checking for inclusion in a database.

Let's add a further quote as a refund for today's failure :-)

"At root what is needed for scientific inquiry is just receptivity to data, skill in reasoning, and yearning for truth. Admittedly, ingenuity can help too." Willard Van Orman Quine (1908-2000) & Joseph Silbert Ullian (* 1930) "The Web of Belief," 1970.
2021-09-20 07:25:40, by slowbut2
was there a correction of the problem after problemist's comment?
2021-09-20 07:19:18, by slowbut2
before my seeing others’ comments: My solution [arrived to through the 32-pixel, B&W, restartable-moving-pieces setting and “(?)”]: in view of the following possibility\s::::::
black king or bishop starts\ white guards anew pawn west of rook and west knight before bishop or queen [from west] or rook mate \\ ,,,,,,,,,,,,,,,,,,,,, it seems [ re-verification is intended later on and before seeing others’ comments] that white's qbfive starts
2021-09-20 06:37:02, by problemist
Unfortunately this is incorrect. The intended solution is 1. Qb5, but there is also the cook 1. Ne6+

Since the opening in October 2000, I had published online more than 6650 free chess problems. If you want more details, look at my chess figures pages.

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