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user 2299
For questions related to (world) records in chess, e.g. the longest game (in moves or in duration), highest obtained rating, longest mate in n puzzle, etc.
11
votes
Longest sequence of mutually forced moves
You mean like this?
[Title "Vilhelm Röpke, Skakbladet 1942, Mate In 6"]
[FEN "K1k5/P1Pp4/1p1P4/8/p7/P2P4/8/8 w - - 0 1"]
White mates in 6.
I guess that's 9 consecutive forced moves. It would be eleve …
- 4,117
17
votes
Accepted
Longest sequence of mutually forced moves
Inspired by Ed Dean's now deleted answer, here is another "infinite loop.”
[FEN "8/6p1/1p3pPk/1P3Pp1/1Pp3p1/KpP3P1/1P6/8 - - - 0 0 "]
- 4,117
28
votes
What is the highest number of different mates in 1 you can have in one (legal) position?
[FEN "1B1Q1Q2/2R5/pQ4QN/RB2k3/1Q5Q/N4Q2/K2Q4/6Q1 w - - 0 1 "]
105 mates — Nenad Petrovic, Sahovski Vjesnika 1947 (Chess Problem Database)
In this position any check is mate. There are 3 knight mate …
- 4,117