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MatPlus.Net Forum Twomovers Please improve my problem
 
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(1) Posted by Hauke Reddmann [Thursday, Oct 13, 2022 22:42]

Please improve my problem


From the Morse task book (German notation, too lazy :-):
J. Morse, The Tablet 1965
(= 10+6 )

1.Ld5! (2.Kc4#,Kc5#,Sd3#)
1...Da4+/Da5+/Da6+/Dxc6+/Dxa1/Dxh8
2.Kxa4#/Kxa5#/Kxa6#/Kxc6#/Kxc5#/Kc4#
(1...Da7 2.Sd3# etc.)
Maximum duel bD/wK. The disadvantages are obvious.

Here is a new matrix I found without the *thematic*
disadvantages, but it has even more disadvantages:
H. Reddmann, Augsburger Allgemeine 2021
(= 7+8 )

1.Ta8! (2.Txa7#) Dxf6/Dxb6/Dc3+/Db3+/Db4+/Dd4+
2.Kc5#/Kd5#/Kxc3#/Kxb3#/Kxb4#/Kxd4#
(1...Db5+ 2.axb5#)

A version where White at least has to think
about how to fire a half battery:
(= 10+9 )

But there is still no try with only one refutation.

I'm dabbling with the matrix since decades, but
I don't find a decent setting. I entice you to
dabble too; you'll soon find out how many side
conditions the matrix forces. (Especially
annoying is that LxD may not be a dual mate.)
Can you do it better than me? A version with
no uncovered checks (like Morse's problem
achieves) I'd see as sensational.
 
(Read Only)pid=23983
(2) Posted by Kevin Begley [Friday, Oct 14, 2022 20:22]

Looks like a job for...

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#DuckChess #wwTRDd?
 
(Read Only)pid=23984
(3) Posted by seetharaman kalyan [Saturday, Oct 15, 2022 18:55]

Your two schemes have the advantage of single threats, but the unprovided checks seem unavoidable due to inherent cook. I see no easy way...
 
(Read Only)pid=23985

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MatPlus.Net Forum Twomovers Please improve my problem