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01-Oct-2019

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MatPlus.Net Forum General Famous Improvments
 
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(1) Posted by Rewan Demontay (Real Name: James Malcom) [Saturday, Aug 17, 2019 07:45]

Famous Improvments


Earlier this morning, I was looking at this Chess Stack Exchange Question, although the question itself isn't relavant to this post: https://chess.stackexchange.com/q/5888/15543

What is relavant is this: @CSE user Fate, the asker of the question, had created the below problem that the question shows

WTM, #23

(= 10+18 )


While the mechanism seen in the solution is ingenious for an easy more-mover meant for amuarter solvers, the unfortunate thing is that position is illegal. The creator be even admitted it themselves.

However, while mulling over how I could possibly improve economy of the position, I struck gold. I had a magical moment of insight, a flash of amazement, and a dash if adrenaline. With a single White knight and pawn, I murdered that horde of Black pieces and made the problem legal!

Rewan Demontay, After CSE User @Fate
WTM, #23
(= 11+10 )


While the solution has many, many duals, it is now much more acceptable with the above legal position

This made me wonder: What are some examples of such famous inprovments to the legality, economy, and/or promoted piece usage of a well-known problem that uses a particular idea/theme/mechanism?

The first thing that came to my mind is how this problem (both ripped from Wikipedia);

Pierre Drumare
Memorial Camil Seneca, 1980

(= 15+15 )


Became this (ignoring how this itself was later Improved):

Leonid Yarosh
Shakhmaty v SSSR, March 1983

(= 13+10 )


There's also how the cycli Babson was e eventually done without any promoted pieces

What are some other famous examples of fampus Improvments?

P.S. The Wiki says that Drummare made. a Babson with Nightiders. Does anyone know of where it could be found? I've read it as
mentioned but never has it actually been shown to my eyes.
 
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(2) Posted by Hauke Reddmann [Saturday, Aug 17, 2019 12:49]; edited by Hauke Reddmann [19-08-17]

Famous it ain't, but some poor git leant himself out
of the window by commenting that Dawsons "switchbackery"
(White takes back a double step and plays it again,
as he wants the e.p., but can't prove legality of it
in the position) would be "impossible in miniature"
(it has 9 pieces). I was young, I was a bigmouth
(no, wait, I STILL am a bigmouth :-), I had it done in
five minutes :-) (SCHWALBE 98, 1986 Nr.5464)

EDIT: What does the Pa7/Pa6 pair do? If it could stand
legally on h7/h6 (didn't check), you might gain a
few moves (didn't check either, a premature Bxg6+
might cook it).
 
 
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(3) Posted by Geir Sune Tallaksen Østmoe [Saturday, Aug 17, 2019 17:11]

1.Bf1 Bg1+ 2.Sxg1 seems to be a problem. The knight heads up to a7 and White queens on move 9.
 
   
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(4) Posted by Rewan Demontay (Real Name: James Malcom) [Saturday, Aug 17, 2019 18:39]

Hauke, those pawns are there to presumably extend the length.

And golly gosh, you are right Geir. Once White Queens, Stockfish announces a mate in 7.

Cook:

1. Bf1 Bg1+ 2. Nxg1 Kxg5 3. Nf3+ Kf6 4. Nxd4 f3 5. Nc6 Kf5 6. Nxa7 Kf4 7. Nc6 Ke3 8. a7 g5 9. a8=Q g4 10. hxg4 Kd2 11. Qxa5+ Kc2 12. Nd4+ Kb2 13. Qb4+ Kc1 14. Qc3+ Kb1 15. Qc2+ Ka1 16. Nb3#

Well that sucks.
 
   
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(5) Posted by Rewan Demontay (Real Name: James Malcom) [Sunday, Aug 18, 2019 03:31]

I suppose what I CAN do is to improve the position'a economy, even if it is still illegal.

WTM, #23

(= 9+13 )

 
   
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(6) Posted by Joost de Heer [Sunday, Aug 18, 2019 11:32]; edited by Joost de Heer [19-08-18]

Drumare's nightrider Babson: https://www.yacpdb.org/#305237
 
   
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(7) Posted by Rewan Demontay (Real Name: James Malcom) [Wednesday, Sep 18, 2019 13:59]

I didn't see that until now. Thanks Joost!

Sorry for the late reply, :).
 
 
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MatPlus.Net Forum General Famous Improvments