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MatPlus.Net Forum General Construction: hang your queen
 
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(1) Posted by Hauke Reddmann [Friday, Jan 25, 2013 12:38]

Construction: hang your queen


In yesterdays match, two <expletíve deleted> of my chess club managed
a queen suicide (they already have been sent to the dungeon,
with some hungry mutant cockroaches as company :-), one actively by
Qb6-e3 Sd2-c4, the other cut off the hinterland of Qb3 by Rb8-b4 Ra1-a3.

So, let's make a fairy h#1 with a royal queen (silly name, isn't it? :-)
out of this.

(= 2+4 )

Maximum 27 achieved.

Obvious follow-up: How many flights in the starting position do you
manage with a non-Q key? (No additional fairy conditions, please.)

Hauke
 
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(2) Posted by Arno Tungler [Friday, Jan 25, 2013 16:28]

There are 19 with the bQ in the corner (is that allowed?) but probably 20 are somehow possible - maybe even more?!

By the way, you can have your queen-move 1 unit less also - here the wPa6 could also be "royal" for balance...:

(= 2+3 )

 
 
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(3) Posted by Arno Tungler [Friday, Jan 25, 2013 16:49]

Now I see 22 flights with the bQ not in the corner...
 
   
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(4) Posted by Hauke Reddmann [Friday, Jan 25, 2013 18:28]

THX for the improvement, I was in a hurry :-)
Oh, and it doesn't matter where the Q stands.

Hauke
 
   
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(5) Posted by Kostas Prentos [Friday, Jan 25, 2013 20:19]

Here is a miniatue with a non Queen key:
(= 5+2 )
h#1 1.Ke4 Bb2(#)

In the diagram position the Queen has all the 27 possible moves; however, a Royal (sic) Queen would have only 10 legal moves: a1, d1, g1, e4, g4, h4, e5,f6, g7, h8. So, how about finding a position that maximizes the number of legal moves a Royal Queen has lost when she was mated?
 
   
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(6) Posted by Kostas Prentos [Friday, Jan 25, 2013 20:29]

For example:(= 4+2 )
h#1 1.Ka7 Rg8(#)
The black Royal Queen had 17 legal moves in the initial position.
 
   
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(7) Posted by Kostas Prentos [Friday, Jan 25, 2013 22:48]

It is possible to go as high as 22 moves (21 if miniature). This seems to be the maximum. I will not give the diagram, yet, because I think it is interesting for other people to try.

So, here is the challenge:
Construct a position for a h#1 to the black Queen. The Queen does not play the first black move. In the initial position, the black Queen has 22 moves that don't commit suicide.

I will post the diagram in a couple of days, unless, of course, somebody solves it earlier
 
   
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(8) Posted by Kevin Begley [Saturday, Jan 26, 2013 00:09]; edited by Kevin Begley [13-01-26]

If the queen is royal, the black King is:
a1) Also Royal, and siamese?
a2) Also Royal, and Rex Multiplex?
a3) Non-Royal?
b) Needed?
 
   
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(9) Posted by Kostas Prentos [Saturday, Jan 26, 2013 00:26]

@Kevin
The bK is irrelevant. In the version I suggest, I have both Kings, so that the position is normal (orthodox). You don't need to checkmate the King. See the post No.6 for an example, with less Queen moves.
 
   
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(10) Posted by Kevin Begley [Saturday, Jan 26, 2013 00:30]; edited by Kevin Begley [13-01-26]

Kostas,

Are you miscounting?
The Royal Queen can not legally move to attacked squares.

Edit: No, looks like you are counting correctly. I think I understand your challenge now.

But, why use the King? Cannot your first diagram (post #5) be shown this way?
(= 5+2 )

 
   
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(11) Posted by Kevin Begley [Saturday, Jan 26, 2013 00:45]; edited by Kevin Begley [13-01-26]

OK, the black King is non-royal in your diagram... otherwise h#1 is solved in a variety of ways.
So, you must intend the black King to be non-royal.
 
 
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(12) Posted by Kostas Prentos [Saturday, Jan 26, 2013 00:56]

The black King is not necessary. Only the bQ is supposed to be mated. I never thought there would be complications, if the King was included in the diagram. The Kings are not necessary, and can be replaced by any other piece. Try to get to 22 moves without the use of any Kings.
 
   
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(13) Posted by Kevin Begley [Saturday, Jan 26, 2013 01:05]

OK, first, here's a small improvement on your #6, without use of a non-royal King:

(= 4+2 )

 
 
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(14) Posted by Kevin Begley [Saturday, Jan 26, 2013 01:05]; edited by Kevin Begley [13-01-26]

Does this give 22 (in miniature)?

(= 5+2 )



Better yet, 23 (if you eliminate the wK, you can have this in miniature form)

(= 6+2 )

 
   
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(15) Posted by Kostas Prentos [Saturday, Jan 26, 2013 01:16]; edited by Kostas Prentos [13-01-26]

Remember that the Queen does not move. A different piece plays the first move for Black. Otherwise, Post #1 shows 27 such moves.
 
   
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(16) Posted by Kevin Begley [Saturday, Jan 26, 2013 01:20]; edited by Kevin Begley [13-01-26]

OK, I'll try w/o bQ moving, but I did manage 23 in miniature form (using your Queen-hunter configuration).
I suspect this is max for any form, for a bQ key.
 
   
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(17) Posted by Kevin Begley [Saturday, Jan 26, 2013 04:04]; edited by Kevin Begley [13-01-26]

Maybe you've invented a new kind fairy condition: Movimaxxer/Moviminner: Black must select from among the moves which provide the most/least # of legal moves.

Good luck finding a key, to turn this into a #2. :)


OK, I managed 25.

(= 2+2 )

= paralyzing camel. :)
 
   
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(18) Posted by Arno Tungler [Saturday, Jan 26, 2013 04:53]

For some reasons I am ignored here (besides by Hauke...) :((
Please look that I already had the black queen hanging with its key move with 5 units (post 2) and announced the 22 flights (@Kostas!) in post 3... I also need for that 8 units, for 21 flights 6 units!
Obviously any "orthodox" kings are superfluos - see Hauke's post 1.
 
   
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(19) Posted by Kevin Begley [Saturday, Jan 26, 2013 05:39]; edited by Kevin Begley [13-01-26]

@Arno,

Kostas' challenge is to do this w/o moving the Royal Queen on move 1, while keeping 22 flights in the initial diagram.
It is non-trivial.


I think I managed it:

(= 4+4 )

 
   
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(20) Posted by Kostas Prentos [Saturday, Jan 26, 2013 06:34]

Well done, Kevin. This is the position I found, too (only mirrored).
 
   
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MatPlus.Net Forum General Construction: hang your queen