[Retros] FW: Problem a friend of mine and I created years ago

[Paulo Peccin]

Yes, thats it!
Thanks.

Paulo

On Wed, Sep 24, 2014 at 10:14 AM, Yoav Ben-Zvi <yoavbz97 at gmail.com> wrote:

>
>
> Solution: 1.Pa6xb7!
>
> WBg4 was promoted on b8 or d8. Promotion by pawn capture from c7 would
> require 6 captures by White Pawns but only 5 Black pieces (excluding BBf8)
> are available for capture. Therefore the promotion move was WPd7-d8 and the
> Black King moved before so it would not be standing in check which implies
> that Castling by Black is invalid. The analysis is elementary by expert
> standards but it is remarkable that this would be discovered completely
> independently and the composers should be encouraged to persist perhaps
> after reading some introductory material such as
> http://www.janko.at/Retros/PedagogicalCollection.htm
>
>
>
> Yoav
>
>
>
> *From:* Retros [mailto:retros-bounces at janko.at <retros-bounces at janko.at>] *On
> Behalf Of *Paulo Peccin
> *Sent:* Friday, September 05, 2014 4:50 AM
> *To:* retros at janko.at
> *Subject:* [Retros] Problem a friend of mine and I created years ago
>
>
>
> Hello,
>
>
>
> I am new to this list.
>
>
>
> I would like to contribute a chess problem invented by me, Paulo Peccin,
> and my friend Klaus Wuestefeld.
>
> We created this problem many years ago, when I we did not even know there
> was a category of problems called Retrograde.
>
>
>
> It's a "Mate in 2" problem. White to play.
>
> The board position is in the attached image file.
>
>
>
> I would like you guys to comment on this, and please let me know if you
> find the solution (with proof)!
>
>
>
> Regards,
>
> Paulo
>
>
>
>
>
>
>
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