[Retros] New HAP Problem

[Joost de Heer]

=?iso-8859-15?Q?Bernd_Gr=E4frath?= wrote ..

> 

> 

> Dear retro friends,

> 

> here is another HAP problem. Early this morning, I sent it to Mario Richter

> for computer-checking. Half an hour later, Joost published his 1. b3 problem

> at the Retrograde Analysis Corner...

> 

> By now, Mario has told me that my problem is C+, while Joost's is incorrect.

> So I think that my problem is, after all, the first HAP problem with 1.

> b3. But even if it isn't, I think that my problem is still interesting

> because it shows both types of castling in one problem.


Shortly after Mario told me about the cook, I found a 10 ply proofgame with 1. b3 (C+ by Mario):

1. P P 2. H HxH 3. H HxH 4. P HxP+ 5. HxH PxP

Joost


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1. b3 e5 2. Ba3 Bxa3 3. Qc1 Bxc1 4. f4 Bxd2+ 5. Kxd2 exf4