List of famous, but incorrect, chess problems Surely it has happened, that a famous chess problem turned out to be incorrect because some move was overlooked. Maybe a chess engine found out that a classic problem was incorrect! Is there a collection of such problems? Please give an example as well, if you know any.
You can find a list of 8039 cooked, which is the official term that means incorrect, chess problems here on the site Yet Another Chess Problem Database, often shortened to YACPDB. Another option is a list of 28670 problems on the Die Schwalbe Chess Problem Database that can be found by inputting 'COOKED' into the search bar.
A famous example of an incorrect problem is this problem, which calls for White to play and checkmate Black in 8 moves.
[Title &quot;William Shinkman, St. Louis Globe-Democrat 1885, Mate In 8&quot;]
[FEN &quot;k7/P7/P7/P7/P7/P7/P7/R3K3 w - - 0 1&quot;]

The intended solution was 1. 0-0-0!, White castling queenside, followed by 1... Kxa7 2. Rd8 Kxa6 3. Rd7 Kxa5 4. Rd6 Kxa4 5. Rd5 Kxa3 6. Rd4 Kxa2 7. Rd3 Ka1 8. Ra3#.
But as it turned out,, 1. Kd2! also checkmates on the 8th move, thereby making the problem incorrect. An example of a possible continuation is as follows: 1. Kd2 Kxa7 2. Re1 Kxa6 3. Re7 Kxa5 4. Re6 Kxa4 5. Re5 Kxa3 6. Kc3 Kxa2 7. Re1 Ka3 8. Ra1#.
On Tim Krabbe's website, there is an article entitled &quot;The Kuwait Immortal, that is linked in Journal Entry #140.
Within, Krabbe published a correction of Shinkman's problem by Bader Al-Hajiri. The White king is now on g1, utilizing Chess960 to allow for a cook free long-range castling as the key.
[Title &quot;Bader Al-Hajiri After William Shinkman), Tim Krabbe's Website  9/19/2007, dedicated to Tim Krabbe, Mate In 8 Under Chess 960&quot;]
[FEN &quot;k7/P7/P7/P7/P7/P7/P7/R5K1 w - - 0 1&quot;]