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@dboing said in #9: > also I am sorry but I am sure there is a 960 position that would be the illegal ancestor of that vampire position mirror. (if I got my arithmetics right here, in words). So it mi…

@IHazABlunder I'm glad you liked it! Yes, knights can only make even cycles. As simple way to prove it is your alternating square color argument. This is also discussed in the first post on chess vamp…

I tried to make this post self-contained. It is hard to be fully precise without distracting the reader. Do you really think the term "retraction" deserves an explanation?

Comments on https://lichess.org/@/ambrona/blog/the-castle-of-chess-vampires/iNHDhlxC

https://lichess.org/appeal

Well in the "Some of the games used to generate this insight", you can see there are very recent games.

Not displaying the flag when ep is impossible is a feature, not a bug.

@q109 Would you like a part 4? I would need to come up with new material for that. And hopefully a bit less technical than part 3.

> @arjun18_PM said in #6: > Is it possible to have a vampire but with no pawns on the board? It is not possible. Without pawns any bishop may have triangulated and the limited-retractions technique ca…

Thank you @der_Drahtesel . I was not planning to write more posts for the moment. Maybe after some time. Do you have any ideas? What kind of retrograde analysis puzzles would you like to see?