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| (461) Posted by Arno Tungler [Sunday, Feb 18, 2024 03:07] |
Now I found it:
1.e5 2.Qh4 3.Qxh5 4.Qh2 5.h5 6.Rh6 7.Rf6 8.Rxf3 9.Rxb3 10.Rb2 11.Ba3 12.d6 13.Bg4 14.Sd7 15.O-O-O 16.Sb8 & axb7+ Rxb7#
Quite tricky and will not be easy to cook... Congratulations, Michel!
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| (462) Posted by Olaf Jenkner [Sunday, Feb 18, 2024 12:38] |
I'm glad that the thread was revived. That's a good reason to update the list,
it's the 17th interim balance.
In my opinion Michel's new record is one of the best problems in this thread.
His outstanding ser-hs#16 beats the old record (331) by three moves.
It's hard to find the current record in section Ser-s= . It might be (113).
Several attempts surpass his problem but the might be cooked as well.
Current records are:
Ser-# ...11 ........... (39) Hilmar Ebert / Alexander Lehmkuhl (feenschach 1976)
Ser-= ...19 .......... (349) Arno Tüngler / Michael Schreckenbach
Ser-s# ..17 .......... (124) Frank Richter
Ser-s# ..17 .......... (128) Michael Schreckenbach
Ser-s# ..17 ................... Frank Richter / Olaf Jenkner
Ser-s= ..22 .......... (113) Michel Caillaud after D. Stojnić and M. Mladenović (C?)
Ser-r# ..13 .......... (421) Michel Caillaud
Ser-r= ..31 .......... (396) Michel Caillaud (C?)
Ser-!# ..14 .......... (325) Michael Schreckenbach / Frank Richter
Ser-!# MMM 16 .. (343) Michael Schreckenbach
Ser-!= ..30 .......... (386) Michel Caillaud (C?)
Ser-h# .KNC 11 .. (42) Michel Caillaud / Arno Tüngler
Ser-h# .. 15 ........ (222) Arno Tüngler / Miodrag Mladenović
Ser-h= .. 30 ........ (407) Michel Caillaud (C?)
Ser-hs# .16 ........ (459) Michel Caillaud (C?)
Ser-hs= .16 ........ (197) Arno Tüngler / Miodrag Mladenović (C?)
Everybody is invited to surpass one of the entries or to cook one marked C?.
I am expecting some additional moves in (386) and (197).
All entries of the record list and some more problems can be seen and autoplayed in the PDB:
https://pdb.dieschwalbe.de/search.jsp?expression=creationuser=%27jenkner%27and+originals=%27MATPLUS%27and+k=%27hom%27
............. Ser-#11 is https://pdb.dieschwalbe.de/P1400918
The last Ser-s#17 is https://pdb.dieschwalbe.de/P1402343
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| (463) Posted by Arno Tungler [Sunday, Feb 18, 2024 17:20] |
Maybe one move could be added?
 (= 8+16 )
hs#17 C?
1.exf6 2.f5 3.Qh4 4.Qxh5 5.Qe2 6.h5 7.Rh6 8.Rg6 9.Rg3 10.Rxb3 11.Rb2 12.Ba3 13.d6 14.Be6 15.Sd7 16.O-O-O 17.Sb8 & axb7 Rxb7#
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| (464) Posted by Arno Tungler [Monday, Feb 19, 2024 01:02] |
Or even
 (= 8+16 )
ser-hs#17 C?
1.exf6 2.f5 3.f4 4.Qxg5 5.Qxh5 6.Qh2 7.h5 8.Rh6 9.Rxe6 10.Re2 11.Rb2 12.Ba3 13.d6 14.Bg4 15.Sd7 16.O-O-O 17.Sb8 & axb7+ Rxb7#
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| (465) Posted by Michel Caillaud [Monday, Feb 19, 2024 21:58] |
Sorry for the missing solution.
It was intended as I myself better find cooks in problems when I don't know the solution (so I often miss "obvious cooks" in my own problems; some psychological bias...).
The best solving program here is Gustav but I could test only the last 10 moves (in more than 1 day).
I met the way to cook (463) and (464) when testing (459) : the Rook uses the e-file.
For example (464) : 1.exf6 2.Bc5 3.d6 4.Qe7 5.Qxe6 6.Qe2 7.Bh3 8.Sd7 9.0-0-0 10.Sb8 11.Sh6 12.Rhe8 13.Re3 14.Rb3 15.Rb2 16.Ba3 & 1.axb7+ Rxb7#
wPe4 in (459) is there to prevent a similar cook (with e7-e6xd5).
One possible way to add 1 move in (459) is having a S(or B or R?!)b6 instead of wPb3 (for 9.Rb3 10.Rxb6 11.Rb2) but this requires a lot more testing work...
This kind of record is a matter of finding the right trick. The field to explore is rather great. So I prefered to publish first the version I would like to keep in my files. When the record is beaten, the other versions extending the moves will have little value...
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| (466) Posted by Miodrag Mladenović [Tuesday, Feb 20, 2024 17:14] |
@Arno (464)
Another cook with g6+ and not the axb7+
1.fxe6 2.Sxf6 3.Rg8 4.h6 5.Kf7 6.Qe8 7.bxc6 8.Bxa6 9.Bd3 10.Bb1 11.a5 12.a4 13.a3 14.a2 15.a1Q 16.Ra2 g6+ Bxg6#
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| (467) Posted by Miodrag Mladenović [Tuesday, Feb 20, 2024 18:13] |
@Michel (463)
Another cook where bR is using the g-file for rook.
1.exf6 2.g6 3.gxh5 4.Sh6 5.Rg8 6.Rg3 7.Rxb3 8.Rb2 9.Qe7 10.Qxe4 11.Qe2 12.Ba3 13.d6 14.Bh3 15.Sd7 16.0-0-0 17.Sb8 & axb7+ Rxb7#
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| (468) Posted by Michel Caillaud [Thursday, Feb 22, 2024 09:14] |
(465) Alexey Gasparyan did the testing work I was too lazy to do :
Sb6 : 1.e5 2.Bc5 3.bxc6 4.Bxa6 5.Bf1 6.Qh4 7.Qh1 8.Ke7 9.Kd6 10.Se7 11.g6 12.gxh5 13.Rg8 14.Rg2 & 1.Sc4+ Bxc4#
Bb6 : 1.e5 2.Bc5 3.Bg1 4.Qh4 5.Qh1 6.Kf8 7.dxc6 8.Bd7 9.Be8 10.Sh6 11.Rg8 12.Sd7 13.Sc5 14.Rd8 15.Rd6 16.Rg6 17.Rg2 & 1.Bxc5+ Bxc5#
Rb6 : 1.g5 2.g4 3.gxf3 4.Sf6 5.Sxd5 6.Sc3 7.dxc6 8.c5 9.Qd3 10.Qe2 11.Bg7 12.0-0 13.Kh8 14.Rg8 15.h6 & 1.Rxh6+ Bxh6#
Nice job!
(467) Yes, Miodrag. Without Sg8 a similar cook is possible in (459) (with g7-g6xh5; Rh8-g8...) so that this is a rare case in this thread where all black officers are useful, Sg8 having only a passive use.
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| (469) Posted by [Thursday, Mar 7, 2024 12:34] |
I admire Michel's record-breaking task (Ser.hs#16). Great job!
As for my problem,in my opinion,the last thing that can be done in this scheme is to pick up a square g4 instead of a pawn h3 with a rook g6.I wonder if this will help?
Specifically:
W:Kd1,Rb6,Rg6,Bc6,Bg3,Nd3,Nd6,pp.a5,b3,e6,f2 (11) B:homebase (16) Ser.hs#14
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| (470) Posted by Dragan Stojnić [Wednesday, Oct 16, 2024 23:55] |
About 386(Caillaud, ser!=30)
Maybe with WRe2 instead b6 can ser!=31?
Maybe only my dream, but who know?
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| (471) Posted by Michel Caillaud [Friday, Oct 18, 2024 13:35] |
Dragan, I think I explored this at the time of composing.
WRe2 and ser-!=31 doesn't work as 13.Rd2 14.Rxd7 15.Rxf7 16.e7 can be played instead of 13.e7 14.Re6 15.Rf6 16.Rxf7
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| (472) Posted by Michel Caillaud [Friday, Oct 18, 2024 18:05] |
Back on another post. One move can be spared from (406).
(AT+MC)
 (= 16+14 )
ser-!=21
1.ç×d3 2.d4 3.d3 4.Qd2 5.Q×b4 6.Sd2 7.Q×a3 8.Qf8 9.a4 10.a×b5 11.Ra4 12.Rç4 13.Rç6 14.Rg6 15.Q×f5 16.Q×h3 17.Qg3 18.h3 19.Qh2 20.Rg3 21.f3!=
This is doubly off topic for the thread (white homebase, shortest) and built from the scheme of the off topic sh= (shortest) by Arno (last version (423)), but anyway...
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| (473) Posted by Olaf Jenkner [Monday, Oct 28, 2024 19:02] |
Alexey Gasparyan sent me a new attempt on ser-hs=
 (= 14+16 )
ser-hs=18
1. axb6 2. Rxa4 3. Ra1 4. Rxe1 5. Rxe3 6. Rxh3 7. Rxh4 8. Rxh5 9. Rxb5 10. h5 11. h4 12. h3 13. hxg2 14. Rh1 15. Rxg1 16. Ra1 17. g1=Q 18. Qd1 Sxg7+ Bxg7 =
Can this be cooked?
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| (474) Posted by Arno Tungler [Tuesday, Oct 29, 2024 07:44] |
For example 1.a5 2.axb4 3.cxb6 5.Sxh5 6.Sg3 7.h5 9.g4 10.gxh3 12.hxg1=Q 13.Qxe1 14.Qxe3 16.Qxb5 17.Qxa4 18.Qd1 & Sxg7+
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| (475) Posted by Arno Tungler [Tuesday, Oct 29, 2024 07:44] |
Deleted
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| (476) Posted by Алексей Гаспарян [Tuesday, Oct 29, 2024 17:01] |
Thank you, dear Arno!
There is also a second version - swap the rook h5 and the pawn h4.
W:Kb2,Qe1,Rh3,Rh4,Bb5,Bg1,Nb4,Ne6,pp.a4,b6,c3,e3,g2,h5 (14) B: homebase (16) Ser.hs=18 C-
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| (477) Posted by Arno Tungler [Wednesday, Oct 30, 2024 01:16] |
The same idea is also possible with
1.axb6 3.Sxb4 6.gxh3 8.hxg1=Q 9.Qxe3 10.Qxe1 11.Qxh4 12.Qxh5 13.Qxb5 14.Qxa4 15.Qd1 18.Sxg2 & Sxg7+
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