

(1) Posted by Rewan Demontay (Real Name: James Malcom) [Thursday, Oct 10, 2019 01:32]; edited by Rewan Demontay (Real Name: James Malcom) [191010] 
Longest problems witthout any captures? I recently remembered a problem from Grigory Popov’s site on rundlaufs: http://superproblem.ru/htm/composition/articles/stat60.html
In it, there was a problem with no captures, that was 26 moves long! (The round trips are just as, if not more, impressive.)
Picture Link: http://superproblem.ru/archive/Stat/Stat60104.gif
#26
(= 8+13 )
Is this the record for a directmate problem with any captures? What about reflexmates, selfmates, and helpmates?
For reflexmates, I know of the below problem, P1010580, dualed as it is.
Karl Fabel, 1595 Probleemblad 0506/1952 , 86. Thematurnier, Spezialpreis
r#118
(= 7+11 )
For helpmates, below is a simple starting point.
h#6
(= 2+2 )


(2) Posted by Olaf Jenkner [Thursday, Oct 10, 2019 13:04] 
See the helpmate in 12,5: P0500978 

(3) Posted by Olaf Jenkner [Thursday, Oct 10, 2019 13:06] 
In 13: P0545949 

(4) Posted by Rewan Demontay (Real Name: James Malcom) [Thursday, Oct 10, 2019 14:38] 
Thanks Olaf. The 12.5 with no captures is neat. But the 13 begins with a capture, so it invalid. 

(5) Posted by Joost de Heer [Thursday, Oct 10, 2019 17:49] 
Josef Halumbirek
Themes64 1961
(= 2+10 )
#44
1.Df4! Rg6 2.Dé5 Rf7 3.Dd6 Ré8 4.Dç7 d3 5.Dd6 Rf7 6.Dé5 Rg6 7.Df4 Rh5 8.Dg3 d4 9.Df4 Rg6 10.Dé5 Rf7 11.Dd6 Ré8 12.Ré8 12.Dç7 Rf8 13.Dd7 Rg8 14.Dé7 Rh8 15.Df7 b6 16.Dg6 b5 17.Df7 b4 18.Dg6 b3 19.Dg5 Rh7 20.Df6 Rg8 21.Dh6 Rf7 22.Dg5 Ré6 23.Df4 Rd5 24.Df5+ Rd6 25.Dé4 Rd7 26.Dé5 Rd8 27.Dé6 Rç7 28.Dd5 Rç8 29.Dd6 Rb7 30.Dç5 Ra8! 31.Db5 Ra7 32.Dd5 Rb8 33.Dç6 Ra7 34.Dç8 Rb6 35.Dd7 Rç5 36.Dé6 Rb5 37.Dd6 Rç4 38.Dç6+ Rb4 39.Dd5 Ra4 40.Dd7+ Rb4 41.Dç6 Ra5 42.Db7 Ra4 43.Db6 Ra3 44.Da5‡ 

(6) Posted by Michal Dragoun [Thursday, Oct 10, 2019 18:26] 
For helpmates was recently announced thematic tourney (218. TT of Superproblem), won by longest problem in 14 moves:
https://yadi.sk/i/TXpAWQPKZ55htA 

(7) Posted by Joost de Heer [Thursday, Oct 10, 2019 18:32] 
Ofer Comay, 218th TT SuperProblem 2018, 1st prize
(= 9+9 )
h#14
1.Fç2 Ff8 2.Fd1 Rb1 3.Fé2 Rç1 4.Ff1 Rd1 5.Fh3 Ré1 6.Ff5 Rf1 7.Rb5 Rg1 8.Rç6 Rh2 9.Rd7 Rg3 10.Ré8 Rf4 11.Rf7 Rg5 12.Rg8 Rf6 13.Rh8 Rf7 14.Fh7 Fg7‡ 

(8) Posted by Joost de Heer [Thursday, Oct 10, 2019 18:34] 
Walther Jorgensen
Skakbladet 1965
(= 8+14 )
s#143
1.Ch5! Rf1 2.Cg7 Rg1 3.Cé6 Rf1 4.Cf8 Rg1 5.Cg6 Rf1 6.Ch8 Rg1 7.Cf7 Rf1 8.Ch6 Rg1 9.Cg4 Rf1 10.Dé1+ Rg2 11.Df2+ Rh1 12.Dd2 Rg1 13.Ch6 Rf1 14.Cf7 Rg1 15.Ch8 Rf1 16.Cg6 Rg1 17.Cf8 Rf1 18.Cé6 Rg1 19.Cg7 Rf1 20.Ch5 Rg1 21.Cg3 a6 … 143.Cg3 Cb~‡ 

(9) Posted by Siegfried Hornecker [Friday, Oct 11, 2019 09:45] 
Of course the Bláthy monuments are well known?
(= 10+15 )
Otto Bláthy
Vielzügige Schachaufgaben 1890, no.48
Mate in 210
The first capture is in the 206th move 

(10) Posted by Joost de Heer [Friday, Oct 11, 2019 17:29] 
The Blathy monuments are all dualistic. 

(11) Posted by Rewan Demontay (Real Name: James Malcom) [Friday, Jun 11, 2021 17:59] 
This s#118 qualifies: https://pdb.dieschwalbe.de/P1354395
Karl Fabel, The Fairy Chess Review 10/1939, s#118
(= 8+13 )


(12) Posted by Rosie Fay [Saturday, Jun 12, 2021 07:52] 
Some long light endgames:
P1321041, a KNNKP #41 by Christian Poisson:
k7/2p5/8/8/N6N/8/8/2K5
The longest dualfree KBNK mate, P1171106, a #31 by Bernhard Walter:
8/8/8/8/3k4/B7/7K/1N6
and two directmates by Bosko Miloseski which are longer though heavier (19 units):
P1389129, a #61:
4Q3/1ppr4/br1k4/1p1p4/1PpP1p2/KBp2p2/2P2P2/8
and P1372258, a #58:
Q7/1ppr4/brk5/1p1p4/1P1P1p2/KPp2p2/B1P2P2/8
Selfmates:
P1083412, a s#118 by Karl Fabel:
5b1k/p1p1p1p1/2PpPpPp/5B2/8/3P4/PP4p1/K4nrb
P1261680, a s#84 by Ernst Hasselkus:
4nB1k/2p1N1p1/2PpPpPp/2pK1P1p/2P5/8/6r1/7b
P1182236, a s#63 by Ottó Titusz Bláthy:
k1b5/1pBp1p2/pPpP1Pp1/6P1/8/1p6/1p6/bK6
Reflexmate:
P1233004, a r#79 by Torsten Linss:
8/Qnk1K3/1N5B/8/8/8/6P1/8
Is the point of interest the longest sound problem with a captureless solution line, or the longest captureless sequence in a sound problem? If a capture is allowed, I expect there are some long selfmates where Black's mating move is a capture but there were no captures before then. 

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