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MatPlus.Net Forum General Construct the longest ser-x with a Black homebase
 
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(121) Posted by Olaf Jenkner [Saturday, Mar 26, 2022 11:35]

Cooked:
5. gxh8Q 6. Qd4 7. Sxa7 8. Kb5 9. Sxc8 10. Sxe7 11. Sc6 12. Sxb8 13. Sxd7 14. Sc5 15. Sxb7 16. Kc6 17. Qd7 Qxd7#
 
   
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(122) Posted by Frank Richter [Saturday, Mar 26, 2022 12:07]

Okay, Olaf's speed is very impressive ... so may be an additional white Pawn e5 helps in (117) and/or (120).
 
   
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(123) Posted by Miodrag Mladenović [Saturday, Mar 26, 2022 12:32]

@(122) Is there any way we can see the diagram. It's very hard to track problems without diagrams.
 
   
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(124) Posted by Olaf Jenkner [Saturday, Mar 26, 2022 12:38]

Frank Richter - correction of (117)
(= 5+16 )

ser-s#18

Cooked:
5. Sxg8 6.Sxe7 7. g8Q 8. Qg4 9. Sc6 10. Sxb8 11. Sxd7 12. Sc5 13. Sxb7 14. Kb5 15. Kc6 16. Qd7 Bxd7/Qxd7#

Frank Richter - correction of (120)
(= 5+16 )

ser-s#17 C+

1.f4 4.f:g7 5.g:h8R 6.R:g8 7.Rg6 8.Ra6 9.R:a7 10.R:a8 11.R:b8 12.R:b7 13.Ka6 14.Ka7 15.Rb8 16.Ra8 17.S:c7+ Q:c7#
 
   
(Read Only)pid=22702
(125) Posted by Olaf Jenkner [Saturday, Mar 26, 2022 18:52]

It's time for a sixth interim balance. (EDIT 03/27 16:41)

Current records are:

ser-s# ..17 .......... (124) Frank Richter
ser-s# ..17 .......... (128) Michael Schreckenbach
ser-s= ..25 .......... (91) Miodrag Mladenović (C?)
Ser-h# .11 .......... (42) Michel Caillaud / Arno Tüngler
Ser-# ...11 .......... (39) Arno Tüngler (starter)
Ser-!= ..26 .......... (118) Dragan Stojnić (C?)
Ser-!# ..13 .......... (127) Joost de Heer / Michael Schreckenbach
Ser-!# MMM 14 .. (74) Frank Richter
Ser-!# MMM 14 .. (78) Joost de Heer
 
   
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(126) Posted by Dragan Stojnić [Saturday, Mar 26, 2022 19:40]

Diagram for 118 (if I right write in algebraic)

(= 10+16 )


ser-!=26(C-)
(-Qh1 ser-!=25)
 
   
(Read Only)pid=22708
(127) Posted by Olaf Jenkner [Sunday, Mar 27, 2022 16:26]

Joost de Heer / Michael Schreckenbach
(= 4+16 )

ser-!#13

1. g4 2. Sg3 3. Sf5 4. Se7 5. Sc8 6. Se7 7. Sc6 8. Sb8 9. Sa6 10. Sc5 11. Sb7 12. Ka6 13. Ka7!#
 
   
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(128) Posted by Olaf Jenkner [Sunday, Mar 27, 2022 16:34]

Michael Schreckenbach
(= 6+16 )

ser-s#17

1. g4 2. g5 3. g6 4.gxh7 5. hxg8B 6. Bh7 7. Bb1 8. Sf5 9. h4 10. h5 11. h6 12. hxg7 13. gxh8Q 14. Qd4 15. Qxa7 16. Qa2 17. Sg7+ Bxg7#

Double Exzelsior
 
   
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(129) Posted by seetharaman kalyan [Sunday, Mar 27, 2022 17:34]

Wow! And a lovely pinmate!
 
   
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(130) Posted by Miodrag Mladenović [Sunday, Mar 27, 2022 19:16]

blank (cooked in 15)
 
 
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(131) Posted by Arno Tungler [Sunday, Mar 27, 2022 19:19]

While not being a length record I think the beneath still deserves a publication here.
Maybe Frank is okay with that co-production??

FR & AT
(= 3+16 )

ser-s#16 C+

1.a4! 2.a5 3.a6 4.Ka5 5.b4 6.b5 7.b6 8.bxa7 9.axb8=R 10.Rxa8 11.axb7 12.Ka6 13.Ka7 14.b8=S 15.Sa6 16.Sxc7+ Qxc7#

Also two excelsiors and minimum white force!
 
   
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(132) Posted by Miodrag Mladenović [Sunday, Mar 27, 2022 20:01]

@(131)
Beautiful problem. Even if not the record, I am glad you decided to publish this problem.
 
 
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(133) Posted by Frank Richter [Sunday, Mar 27, 2022 20:08]

Yes, very nice and this is fully your work, Arno!
But many thanks for the offer.
 
   
(Read Only)pid=22717
(134) Posted by Miodrag Mladenović [Tuesday, Mar 29, 2022 15:43]

(= 8+16 )

ser-r=24 (C-)

COOKED BY ARNO (135)
 
   
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(135) Posted by Arno Tungler [Tuesday, Mar 29, 2022 17:16]

@(134)
Cooked by 1.Rd3 2.Rxb7 3.Rxb8 4.Bxa7 5.Rb7 6.Kd4 7.Kc4 8.Kb4 9.Ka5 10.Ka6 11.Rxd7 12.Rd3 13.Rg3 14.Rxg7 15.Rg6 16.Rb6 17.c4 18.c5 19.c6 20.h4 21.h5 22.h6 23.Qd2 Qxd2=

Edit: Missed the wBd4… so now the above cook works!
 
   
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(136) Posted by Miodrag Mladenović [Tuesday, Mar 29, 2022 21:10]

I am wondering if moving wPh2 to f2 fixes this problem?
(= 8+16 )

ser-r=24 (C?)
 
   
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(137) Posted by Joost de Heer [Wednesday, Mar 30, 2022 09:40]

(136) is cooked as well: 1. f4 2. f5 3. f6 4. fg7 5. gh8=B 6. Ra6 7. Ba7 8. Bb8 9. 9. Ra8 10. Bd4 11. Bda7 12. Rc7 13. Rd7 14. Kd4 15. Kc5 16. Rb7 17. b6 18. Kb5 19. Ka6 20. c4 21. c5 22. c6 23. c7 24. Qd5 Qd5=
 
   
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(138) Posted by Dragan Stojnić [Wednesday, Mar 30, 2022 10:58]

(136) I dont know about reflex rule in series genre;
is this cook if White have shorter stalemate to Black?
1.Ra6 2-11.Ba7,b8,c7,d8,e7,f8,g7,h8,g7,f8 12.Qg4 13.Qg8 14.Qh7 15.Qh6 16.b6 17.Kd4 19.Kd6 20.Be7=
 
   
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(139) Posted by Joost de Heer [Wednesday, Mar 30, 2022 12:54]

No, reflex means that you must fulfill the stipulation if you can in one move, not in 20.
 
   
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(140) Posted by Dragan Stojnić [Wednesday, Mar 30, 2022 15:42]

(Deleted)
 
   
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MatPlus.Net Forum General Construct the longest ser-x with a Black homebase