355. Fadil Abdurahmanovic Bosnia and Hercegovina
| Tries:
1.Kc4 Be8 2.Qa3 B~ 3.Kb5 Kc7 4.Ka4 Kb6 5.?! Be8#
1.Kc4 Be8 2.Qa3 Kd7 3.Kb5 ?! 4.Ka5! Kc6 5.Ka4 Kb6#
Solution:
1.Kc4 Be8 2.Qa3 Kd7 3.Kb5 Kc7+! 4.Ka5 Kc6! 5.Ka4 Kb6#
The old mechanism by Dr. K. Ebercz (2nd Pr. Magyar Sakkvilag 1934) of one critical move and two interferences by the same white piece, in the most economical position. There were many versions of this mechanism, one of which is by C. J. Feather (diagram A below) , and another by R. Weihagen (diagram B below) which is the first one in miniature form. Please, note here two tries with the lack of tempo both for black and white. [Author]
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