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 CHESS SOLVINGTournamentsRating lists1-Jul-2021

MatPlus.Net Forum Retro/Math Fastest stalemate with Isardam rules

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### Fastest stalemate with Isardam rules

Hi retro-friends,
Recently, I published in Quartz 32 the following dual-free proof game which leads to stalemate in Madrasi:
Joost de Heer
Dedicated to Nicolas Dupont
(= 15+12 )

SPG 9.5 (Madrasi)

1. g4 Sa6 2. g5 h5 3. d4 Rh6 4. d5 Rc6 5. dc6 Sf6 6. gf6 Sb4 7. Bg5 Sxa2
8. e3 Sc1 9. Qxh5 Se2 10. Rxa7=

Now, I put a corresponding problem for Isardam genre and I just found a dual-free PG in 12.5 moves. Can somebody find one shorter?

______
Notation converted to diagram by Admin

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Thank you Paul!
I did not succeed to build a shorter SPG in Isardam, but I think that this one shows 8.5 moves in Madrasi:

Original
(= 15+15 )

Madrasi
SPG 8.5 moves

Guy.

 (Read Only) pid=2326

What a wacky idea. Like it! Like it!
Eh, I'm not familiar with fairy chess - can't the same
thing be done much faster with a Qf6?

1.e3 f5 2.h3 Kf7 3.Qe2 Kg6 4.Qa6+ Kh5 5.Qf6 f4 6.g4 =

Hauke

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Yes, this would be shorter.
The point is no arrange the unicicity of the moves order, to obtain a SPG. Not easy.

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(5) Posted by Juraj Lörinc [Wednesday, May 28, 2008 22:56]

Yes, quite funny idea of en passant in Madrasi that was repeatedly discovered by a few composers. Ivan Skoba was not the first, but he has probably worked with it most and 8 years ago he has published an article on that in Pat a Mat. See the short excerpt at

http://jurajlorinc.tripod.com/chess/madrep.htm

In the context of this discussion the 6th problem is the most interesting, home-base h=5 that has made it into FIDE Album 1998-2000. (Also great 3rd problem, ser-r#29 has made it, but there the paralysis of pawn is only temporary.)

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...and Paul just told me that 6.5 moves have been achieved with the same principle in Quartz.

End of the story for Madrasi, I think

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This composition was made to show the fastest Madrasi stalemate without using the 'ep trick'.

 (Read Only) pid=2376

Indeed, the e.p. trick is something peculiar. :-)

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MatPlus.Net Forum Retro/Math Fastest stalemate with Isardam rules