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MatPlus.Net Forum Moremovers The "mirror moves" theme
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(1) Posted by Siegfried Hornecker [Wednesday, Aug 23, 2017 08:34]; edited by Siegfried Hornecker [17-08-23]

The "mirror moves" theme

The theme that I call "mirror moves" was apparently used in the 3rd WCCT. White and Black make the same moves, but mirrored, inducing a weakness in the black position that is not there in the beginning, that can - preferrably in a logical way - used by White.

I give only the relevant main line in the following examples, taken from Wieland Bruch's new book "Dieter Kutzborski: Verschlüsselte Steine".
I would like to see more examples of this theme, so please post them (and also a link to the 3rd WCCT brochure, if it is online).
I know some crude examples of this theme in studies as well (the "double helix" study that I think I quoted in an EG article about "WCCT X"), but also examples from other genres such as studies, selfmates, etc. are welcome. I post it under "moremovers" because the problems I saw both are moremovers.

There also is a famous game by Capablanca vs. an unknown player, where the unknown player mirrored (almost) all moves - until Capablanca gave a check and mated in three more moves. It went like this (but possibly the move order was different):
1.e4 e5 2.Sf3 Sc6 3. Sc3 Sf6 4.Bb5 Bb4 5.d3 d6 6.0-0 0-0 7.Bg5 Bg4 8.Sd5 Sd4 9.S:b4 S:b5 10.Sd5 Sd4 11.B:f6 B:f3 12.Qd2 Qd7 13.Se7+ Kh8 14.B:g7+ K:g7 15.Qg5+ Kh8 16.Qf6 mate

(= 7+8 )

Dieter Kutzborski
Deutsche Schachblätter 1975, 1st prize

1.S:d7+? B:d7 2.Bd4+ B:d4!
1.Sd5! Sd3 2.Ba7! Ba1!? 3.Sb6! Sb2 4.S:d7+! B:d7 5.Bd4 mate

(= 8+11 )

Hans-Peter Rehm
3rd WCCT 1984-1988, 1st place

1.Se7!? Se3! 2.Bh6 B:h4 3.B:e3 B:e7!
1.Bd6? Bd4! 2.Se7 Se3 3.? (waiting move)

1.Bh6! B:h4 2.Bf8 Bf2 3.Bd6 Bd4 4.Se7 Se3 5.h4!, and zugzwang: 5.-B~/S~ 6.B:c4/S:d5 mate
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(2) Posted by marcin kolodziejski [Wednesday, Aug 23, 2017 08:41]

Siegfried, where is bK in the second example?
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(3) Posted by Siegfried Hornecker [Wednesday, Aug 23, 2017 08:45]

It fled the scene because it didn't want to be checkmated.
I put it back in, thank you!
Gotta keep an eye on those pieces.
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(4) Posted by Joose Norri [Wednesday, Aug 23, 2017 12:43]

The 3rd WCCT theme:

In a thematic try, black repeats the manoeuvre or idea of white, thus defending the try. In the solution, the same manoeuvres are played by white and black, but white is able to force the mate.
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(5) Posted by Hauke Reddmann [Thursday, Aug 24, 2017 13:24]; edited by Hauke Reddmann [17-08-24]

Obviously this comes to mind first:

Of course, it's not mirrored, but rather "same direction".
But it can't be mentioned often enough anyway :-)

Give me ten minutes and I compose a 2# with mirror moves :-)))

EDIT: Also, my SCHWALBE problem is somewhat relevant: How can White hinder
Black to mirror his moves (from game start position)?
No points until you find 7-8 possibilities!
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(6) Posted by James Malcom (Rewan Demontay) [Monday, Sep 16, 2019 23:45]

Just to share it, here is what I belive to be the “double helix” study that was mentioned.

J. Van Reek. Shakhmaty v SSSR,1969, Commendation

White To Play And Win

(= 7+7 )

See the solution here:
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(7) Posted by Siegfried Hornecker [Tuesday, Sep 17, 2019 07:53]; edited by Siegfried Hornecker [19-09-17]

Yes, this is the study known as "double helix".
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MatPlus.Net Forum Moremovers The "mirror moves" theme