[Retros] shortest proofgames of castling switchback

[Mario Richter]

Dear Hiro,


> How about shortest proofgames of castling switchback?

> 

> (1) K-side

> (8.5, 2): 1.g3 f5 2.Bh3 f4 3.Bxd7 Nxd7 4.Nh3 Ne5 5.O-O Nf3 6.Kg2 e5 7.Rh1

> Ng1 8.Kf1 f3 9. Ke1 (Akayo Okaya, Problem Paradise 13, 1999)

> (2) K-side with minimum capture

> (3) K-side with maximum capture  

> (4) Q-side

> (5) Q-side with minimum capture

> (6) Q-side with maximum capture  


In February 2005 this topic was already discussed, s.
http://one.pairlist.net/pipermail/retros/2005-February/thread.html

(Look for "At home proof game with 0-0-0" and "Invisible castling")



> (7) other types


Btw., does an SPG exist, where both sides did an invisible castling?

regards

  mario