[Retros] rights & ocassions

[Joost de Heer]

On 05/03/2014 02:28 PM, raosorio at fibertel.com.ar wrote:

>

> Hi friends,

>

> How many two moves switchbacks could be legally preformed by the kings

> in the following position,

>

> White   Ke1, Rh1

> Black   Ke8, Ph2


White 4, black 3 (and after the 4th return of the white king, the 
position is draw).

Technically, white still has castling rights. Practically these rights 
are nonexistent (no legal sequence exists in which white castles), but 
the rule of threefold repetition only looks at the technical rights, not 
the practical rights.

Joost