A Retro Problem by Stanislav Vokal

  
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Dariusz Fraczek    (2011-11-22 18:21:01)
A Retro Problem by Stanislav Vokal

I think that we cannot say. Depending on previous black moves black may:
- castle both kingside and queenside,
- castle only kingside,
- castle only queenside,
- castle is not possible.
For example: 1. Na3 Nc6 2. Nb5 Nd4 3. Nf3 Nb3 4. Ne5 Nxc1 5. Ng6 Nb3 6. Qc1 Nxc1 7. Nxf8 Nb3 8. axb3 Nh6 9. Ng6 hxg6 10. f3 f6 11. h3 - and now:
- 11... Ng8 12. Rg1 Nh6 13. O-O-O,
- 11... Rb8 12. Rg1 Ra8 13. O-O-O,
- 11... Rg8 12. Rg1 Rh8 13. O-O-O,
- 11... Kf8 12. Rg1 Ke8 13. O-O-O.




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