[Retros] Fake castling speed record

[Ulrich Ring]

Am 23.09.2012 14:34, schrieb Gianchess at aol.com:


> I'm guessing your 5.5-move game goes like this: 1. f4 b6 2. Kf2 Bb7 3. Qe1 Bxg2 4. Nf3 Bxf1 5. Rxf1

> b5 6. Kg1, with the only possible variant being 1...b5 and then choice of any Black move #5.

> Can it be proved that there is no 4.5 game?


Hi,

aren't 5,0 moves enough if the fake happens on black's side
(with 5.- Kg8)?

Best, Uli