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MatPlus.Net Forum General Construct the longest ser-x with a Black homebase
 
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(41) Posted by Michel Caillaud [Monday, Mar 21, 2022 18:33]

Here is a C+ one :
(= 4+16 )
Ser-h#10
 
   
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(42) Posted by Arno Tungler [Monday, Mar 21, 2022 20:00]

With an additional wPd6 it is a C+ ser-h#11.
 
   
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(43) Posted by Olaf Jenkner [Monday, Mar 21, 2022 21:28]

What a great achievement!
Thanks again to James for this idea.

solution of (42):
1. e5 2. Bxd6 3. Ba3 4. c5 5. Qa5 6. Kd8 7. Kc7 8. Kb6 9. Kb5 10. Ka4 11. b5 b3#

Olaf Jenkner
(= 2+16 )

Ser-!=8 C+

1.f4 2.f5 3.f6 4.fxe7 5.exf8=S 6.Sxd7 7.Sf8 8.Sxh7=
 
   
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(44) Posted by Arno Tungler [Monday, Mar 21, 2022 22:15]

Just repeated the above…
 
   
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(45) Posted by Joost de Heer [Monday, Mar 21, 2022 22:57]

Does this work?
(= 4+16 )

ser-s=15
 
   
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(46) Posted by Olaf Jenkner [Monday, Mar 21, 2022 23:24]

Congratulations! C+
 
   
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(47) Posted by Dragan Stojnić [Tuesday, Mar 22, 2022 01:11]

Maybe can ser-!=11 :
W- Ka5 Sb6(or Rb6) Pa4b5h2
B-16 homebase
5.gxh8B 7.Bxe7 8.Bd6 9.Bxc7 11.Bxa7= (C-)
 
   
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(48) Posted by Olaf Jenkner [Tuesday, Mar 22, 2022 01:16]

(= 4+16 )

ser-!#12 C+

1.f4 2.f5 3.f6 4.fxg7 5.gxh8=Q 6.Qe5 7.Qxc7 8.Qxb8 9.Qxb7 10.Ka6 11.Bb5 12.Qxa7#

Here is the ser-!# starter.
 
   
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(49) Posted by Olaf Jenkner [Tuesday, Mar 22, 2022 01:20]

Dragan Stojnić
(= 5+16 )

ser-!=11 (C+)

Time for first interim balance:
Current records are:

ser-s# .15 .... Jost de Heer
ser-s= .16 .... Michal Dragoun (C-)
..................... Miodrag Mladenović/Joost de Heer (later published)
..................... Miodrag Mladenović (post 61)
Ser-h# .11 .... Michel Caillaud/Arno Tüngler
Ser-# ...11 .... (starter) Arno Tüngler
Ser-!= ..11 .... Dragan Stojnić
Ser-!# ..13 .... Olaf Jenkner
 
   
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(50) Posted by Olaf Jenkner [Tuesday, Mar 22, 2022 01:49]

(= 4+16 )

ser-!#13 C+

1.Kh4 2.g5 3.Bh5 4.f4 5.f5 6.f6 7.fxe7 8.exf8=S 9.Sxd7 10.Sc5 11.Se4 12.Sg3 13.g6#
 
   
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(51) Posted by Michal Dragoun [Tuesday, Mar 22, 2022 02:00]

(= 7+16 )

ser-s=16 (c?)
 
   
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(52) Posted by Joost de Heer [Tuesday, Mar 22, 2022 06:23]

The ser-s=15 should be attributed to Miodrag, mine is just a version.
 
   
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(53) Posted by Joost de Heer [Tuesday, Mar 22, 2022 11:01]

Is this possible?
(= 4+16 )

ser-s=16 (C?)
1. Bf3 2. g4 3. g5 4. g6 5. gh7 6. hg8=R 7. Rg7 8. Rf7 9. Rf6 10. Rd6 11. Rd7 12. Ke6 13. Bb7 14. Bf3 15. c6 16. Bh5 Rh5=
 
   
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(54) Posted by Miodrag Mladenović [Tuesday, Mar 22, 2022 16:55]

Joost gave me an idea for 16:

(= 4+16 )

ser-s#16 (C?)

Gustav is still trying to solve it but I do believe it's correct.
 
 
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(55) Posted by Miodrag Mladenović [Tuesday, Mar 22, 2022 16:55]

Joost gave me an idea for 16:

(= 4+16 )

ser-s=16 (C+)

Gustav did not find any cook.
 
   
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(56) Posted by Frank Richter [Tuesday, Mar 22, 2022 17:56]

Deleted.
 
   
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(57) Posted by Olaf Jenkner [Tuesday, Mar 22, 2022 18:02]

Blank
 
   
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(58) Posted by Miodrag Mladenović [Tuesday, Mar 22, 2022 18:10]

@(56)(57)
My type mistake. As Olaf noticed it's ser-s=16 (I corrected my previous post with a correct stipulation).
 
   
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(59) Posted by Miodrag Mladenović [Tuesday, Mar 22, 2022 18:40]

@(53) Joost,
Sorry, I missed this diagram when I posted (54). Position with WPg2 is correct. I did not test position with WPg3 but I am absolutely sure it's correct too. However I prefer the position with WPg2.
 
   
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(60) Posted by Olaf Jenkner [Tuesday, Mar 22, 2022 18:58]

Position with WPg2 is C+
 
   
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MatPlus.Net Forum General Construct the longest ser-x with a Black homebase