holy jesus. 290 moves?
271, I read.
You know you can edit your posts, and any diagram that is in them, right?
I don't think you can, I'd have to do it all over again, and it took me a while the first time, stubborn_donkey very helpfully put up the right one anyway.
You click on FEN/PGN and copy the content to the clipboard then paste in notepad so that you have a copy.
Then you can edit the post, add a new diagram, put in the PGN position from the clipboard or copy from notepad and then you can edit the new diagram, delete the old one and submit the changed post. Make sure you keep the backup in notepad until you have finished the action.
https://www.youtube.com/watch?v=7p0Hyry-8bk
( Above you can see the longest mate which was ever composed - it is my mate-composition with mate in 552 moves from the year 2015 )
Dr.Otto Blathy (1860-1939) specialized in such problems. They were his kingdom! He has composed mates in 137 , 214 , 265 moves , etc. I read somewhere that he composed a "mate in 342" but I still haven't found this one!!
Here my worldreord from 2016 : Mate in 553 moves
https://www.youtube.com/watch?v=GC3oecykcC8
There is NO 50M rule at FIDE for worldrecords like above
My chessproblems ( over 300 chessproblems WITH 50M rule ) anybody can find at gameknot.
You can klick here and try to solve them directly by clicking :
http://gameknot.com/chess-puzzles.pl?s=0&a=1&u=chesscode&m=0&s=9
kindly regards and have all a nice day with my chesspuzzles
Lutz Neweklowsky
You can checkmate in three with Rd1 Bd4 E4 Kd6 E5 Kd6 C4#
for your information - have all a nice day with my chesscompositions : https://www.youtube.com/watch?v=bqnq580ozAI
At the moment ( August 2020 ) the longest forced mate is this one in 555 moves :
https://www.youtube.com/watch?v=70FmRGd4qqU
kindly regards Lutz Neweklowsky
Who can compose a longer mate ?
holy jesus. 290 moves?