﻿﻿ MatPlus.Net

Website founded by
Milan Velimirović
in 2006

4:06 UTC
 ISC 2021

Remember me

 CHESS SOLVINGTournamentsRating lists1-Apr-2021

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

### 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 )

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

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 )

SPG 8.5 moves

Guy.

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

(4) Posted by Guy Sobrecases [Wednesday, May 28, 2008 11:07]

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

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

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.)

...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

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

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