Problem 285: Eugene Rosner

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Problem 285: Eugene Rosner - Twomover

eugenerosner (02.12.2013) Twomover with progressive Black Correction. Welcome to Eugene Rosner from USA!

285

1.Bc7? (2.Sd6#)

1…Sd~(a) 2.Sc5#,

1…Sxc4 2.Bxb7#, 1…bxc3!

1.cxb4? (2.Sc3#)

1…Sd~(a) 2.Sc5#, 1…Sxe5!?(b) 2.fxe5#

1…fxe5!

1.Kg6! (2.Sd6#)

1…Sd~(a) 2.Sc5#, 1…Sxe5+!?(b) 2.fxe5#, 1…Sxf4+!?(c) 2.Qxf4#

1…Sxc4 2.Bxb7#

(1.Kg8,Kh8? Qxa8+!) (1.Kh6? Bg5+!)

Progressive Black Correction. Reciprocal unguards of d4 in tries. (Author)

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Eugene with his wife Amy and their children's

Morey and Elana

Comments

+1 #1 Carlos Grassano 2013-12-02 13:03

wK.key unpins f7 , guards f7, expose to (cross)checks.

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+1 #2 seetharaman 2013-12-02 15:53

There are two corrections, not Progressive, as the error of the first correction is not carried over in the next correction.

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+1 #3 Eugene Rosner 2013-12-02 17:49

how about "cummulative black correction pattern"? Is that more accurate and descriptive?

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+1 #4 Eugene Rosner 2013-12-03 18:39

now that I think about it further, would this be progressive black correction with change of defense motives?!

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+1 #5 seetharaman 2013-12-04 19:40

There is indeed change of defence motive. I am not sure what exactly is meant by 'cumulative' or 'progressive' black correction. I assumed these terms to mean the more commonly known 'tertiary' and 'quaternery' black corrections. See the interesting discussion here where the concept of carry over of black errors is explained.
www.matplus.net/.../

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