Website founded by
Milan Velimirović
in 2006
23:08 UTC
| |
MatPlus.Net  Forum General Task/record question |
| |
|
|
|
|
You can only view this page!
| | | (1) Posted by Jeffrey [Saturday, May 17, 2008 20:35]; edited by Jeffrey [08-05-17] | Task/record question
Hello all!
I've probably asked this question some 8-10 years ago somewhere, but I don't remember what, if any, response I got--the answer may have changed between now and then anyway. Does anyone know the length record for a direct-mate problem where *all* the variations are dual-free (even when black makes "stupid" moves)?
Thanks for your help :)
Jeffrey
| | | (2) Posted by Sarah Hornecker [Saturday, May 17, 2008 21:36]; edited by Sarah Hornecker [08-05-17] |
Only thematical content from the chat is posted:
QUOTE
Lovuschka / Siegfried Hornecker (21:03:15 CET)
8/8/rp3K2/4P3/4kp2/2RN2P1/1PBb4/q7
Lovuschka / Siegfried Hornecker (21:03:22 CET)
An earlier #26
Lovuschka / Siegfried Hornecker (21:04:03 CET)
Johannes Kohtz & Carl Kockelkorn, Deutsches Wochenschach 1911 (!)
Lovuschka / Siegfried Hornecker (21:08:34 CET)
8/p4p2/5p1p/p2N1P1P/p2P1P2/kp5P/1r6/bBB1K3
Lovuschka / Siegfried Hornecker (21:09:17 CET)
Alexander & Vladimir Semenenko, Gebelt 70 JT 1984, special commendation - Mate in 28
Lovuschka / Siegfried Hornecker (21:11:56 CET)
K2nk1Br/1P2p2P/p1n1RpNp/4pr1N/qP3P2/3pP2P/2b3pR/1Q4B1
Lovuschka / Siegfried Hornecker (21:12:08 CET)
This could be another one
Lovuschka / Siegfried Hornecker (21:12:27 CET)
William S. Branch, The Chess Amateur 1919 - Mate in 33
Lovuschka / Siegfried Hornecker (21:13:35 CET)
b2b3R/1np2pp1/2N5/n1PK4/pP3P2/N1k2p2/Rpp3p1/r1B2rq1
Lovuschka / Siegfried Hornecker (21:13:59 CET)
Otto Blathy & HFL Meyer, Vielzügige Schachaufgaben 1890 (!) - Mate in 45
Lovuschka / Siegfried Hornecker (21:14:27 CET)
this also could be one - but I can't play through the solution with WinChloe so I only can assume by the moves
Lovuschka / Siegfried Hornecker (21:17:00 CET)
1K1n2q1/1p4pR/1prPPpPn/1RB1p1rP/8/1B2p3/2p2b2/1k2N3
Lovuschka / Siegfried Hornecker (21:17:42 CET)
John Christoffel van Gool & André Chéron, Journal de Genève 1977 - Mate in 69
jrotenberg / Jacques Rotenberg (21:17:52 CET)
I think there are duals
jrotenberg / Jacques Rotenberg (21:18:15 CET)
in subvariations
Lovuschka / Siegfried Hornecker (21:18:28 CET)
I think, this is THE Zwickmühle
Lovuschka / Siegfried Hornecker (21:18:39 CET)
so there are no duals, I guess
Jangler NPL / Jeffrey (21:18:56 CET)
oh yes, this one was quoted in Morse's book as longest all-checking problem. I'm pretty sure there are duals
jrotenberg / Jacques Rotenberg (21:19:17 CET)
though all the move are checks only in the main line
Lovuschka / Siegfried Hornecker (21:29:22 CET)
RrRrRrRrRrRrRrRrRr/rp15R/R1p14r/r2p13R/R3p12r/r9p6R/R5p10r/
r6ppp7R/Q6pkpp6r/r4P6P4R/R4P1PPKPp5r/r7PP7R/R2P3P9r/r12P3R/RP12P2r/3p1p9P1R/rP14Pr/
RrRrRrRrRrRrRrRrbR
[NOTE: Split into three lines for the forum but should be one. SH]
Lovuschka / Siegfried Hornecker (21:30:26 CET)
Philippe Rouzaud, "En quelle année sommes-nous?", Phénix 2002 - Poursouite, Poursouite blanche, 18x18 board - Mate in 2002
 |
| | | (3) Posted by Jeffrey [Tuesday, May 20, 2008 18:15] |
Well, I broke down and bought WinChloe (the light version), and searched a bit myself; I'm fairly confident this one's dual-free (all of black's moves are forced, so if there are duals, it's because white has a shorter way to mate, which I don't think is the case.)
 (= 7+12 )
Ljubomir Ugren, Problem 1976
#39
WinChloe ID: 166329
I'll type in the solution, if there's interest.
| | | (4) Posted by Kevin Begley [Friday, May 30, 2008 11:56] |
Incredible problem!!!
| |
No more posts |
MatPlus.Net Forum General Task/record question |
|
|
|
ISC 2024
