The NBC Openings

NBC = No Black Castling:
1. Na3 Nh6 2. Nb1 Rg8 3. Na3 Rh8 4. Nb1 Ng8 5. Nc3 Na6 6. Nb1 Rb8 7. Na3 Ra8 8. Nb1 Nb8 
was added to all openings. So, Black is not allowed to castle anymore. This gives
a measureable advantage to white, so the openings can be used for Armageddon rescoring.
But it is also possible, to use these openings with regular chess with classcial scoring
system. 

I recommend to use the NBC openings, only, when the NBSC openings give too high draw-rates.
Because the NBC openings give white a really huge advantage and using NBSC, the advantage
for white is smaller.

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There are 3 pgn/epd opening sets in this download-package:

NBC_Noomen_3mvs: Built from the Noomen 3mvs opening set (deleted double endpositions and
opening-lines, which are not good for computerchess IMHO (Dutch, King's gambit etc). 
250 lines remaining.

NBC_V2_4mvs: 12910 lines. Out of the Megabase 2020. All endpositions calculated by 
KomodoDragon 1.0 (Quadcore, 15''/move)
All endpositions in an eval interval of [-0.29/+0.49] (before the NBC-line was added,
of course).

NBC_V2_6mvs: 46537 lines. Out of the Megabase 2020. All endpositions calculated by 
KomodoDragon 1.0 (Quadcore, 15''/move)
All endpositions in an eval interval of [-0.29/+0.49] (before the NBC-line was added,
of course).

I recommend to use the smallest of the 3 opening sets, which is big enough for your engine
play or testing. 

The Book-folder contains openings-books for FritzGUI, ArenaGUI and polylgot-book format
(the ShredderGUI has a serious bug in its opening-book using: It does not recognize, that
the 2 move sequence of the rook (from h8 to g8 and back to h8) makes the short castling
for black illegal. So, an opening-book built from NBC-lines will not work in the ShredderGUI)

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All ideas of the Pohl AntiDraw Openings by Stefan Pohl (except the NBSC concept: Idea by Larry Kaufman (Komodo team)).
All work of the Pohl AntiDraw Openings done by Stefan Pohl (except the generation of the pawn moves added to the 
Drawkiller lines: Done by Hauke Lutz)

(C) 2021 Stefan Pohl (SPCC)(www.sp-cc.de)