[Retros] Proofgame - correction

[per olin]

Die Schwalbe Heft 233 Oktober 2008, page 572, Roberto Osorio's article 'Umarmung unterschiedlich alter Zwillinge' reproduces one of my proofgames. It got the only prize in Suomen Tehtäväniekat Summer competion 2005 (award early 2007), which was at the same time Simo Ylikarjula 60 JT. 

The proofgame is unsound, which was informed to the tourney director during confirmation time in spring 2007. At the same time was informed the correction by having black's last move to be 25. - Lg6 instead of 25. - Dg4 (corresponding diagram change bDg4 to g3 and bLh5 to g6). As the correction has not been published, it appears for the first time now here in Retro Corner.

For those, who have seen or not seen the article in die Schwalbe, here the correct move sequence C+:
1.h4 Sh6 2.h5 Sf5 3.h6 Sc6 4.hxg7 h5 5.g8D Th6 6.Dg3 Te6 7.Dh2 Lh6 8.g4 Kf8 9.g5 Kg7 10.g6 Kf6 11.g7 h4 12.g8D h3 13.Dgg2 Dg8 14.a4 Dg3 15.a5 Ke5 16.a6 Kd4 17.axb7 a6 18.b8D Sa7 19.Db3 Tb8 20.Da2 Tb5 21.b4 Tbe5 22.b5 Lb7 23.b6 Lf3 24.b7 Lh5 25.b8D Lg6 26.Dbb2+

Best regards

Per Olin
 



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