(posted earlier in P4 thread but it belongs here ofcourse, so copied)
bigger gambit book (posted and explained in this forum some time ago);
polyglot format
https://sourceforge.net/projects/chess- ... n/download
decent and sharp book for P4 (crazy/unsound gambits were removed
and less sound gambits have lower playing frequencies); includes many
relatively unknown (or new) gambits for White and Black
anyone knows where this trap.ctg (c32) book can be found?
(assuming the t is not misspellled and should be c); meanwhile i found this,
https://fauziakram.gumroad.com/l/traps
but i don't think i'm going to spend 19 bucks on it
Aggressive Opening book?
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Re: Aggressive Opening book?
manion, for your purpose (human chess) the gambit book should be ok;
some preliminary testing against Crafty (GM level) indicated that with
the gambit book it wins more games then when using a 'perfect' book with ply 8
(i used an elo2600.bin with ply 8 and while P4 then also often wins against Crafty
the games are not so spectacular, longer, and more like slow buildup of
kings attacks rather than sacrifices).
As for this gambit book (gambits.bin) although i've done quite some work on it,
it could be tuned a bit further ofcourse (which i'm doing sometimes, if it -rarely-
plays a losing gambit line against crafty; if an engine has book learning in addition
to the polyglot book, then over time it would improve in strength.
NB at levels above 3000 (above world champ level) the gambit book wouldnt'
be suitable anymore, as i tested in some P4-Marvin games, then a 'perfect'
book as eg. the Pohl suggestion would play better but you wouldn't get
such spectacular games (P4 won't go into self invented gambits from such
a strong book, maybe P3 would have done this, at the expense of lower strength,
but P4 not anymore). So, at highest levels less fireworks ofcourse, but with P4 still
more interesting games then eg. the current Fide human world championship
Ofcourse playing more risky would cost more energy for the human players, and
we don't seem to have nowadays any more players with style as eg. Tal (or a
bit less sharp/aggressive, but more solid Kasparov); nowadays with the comps
and bases and all preparations and higher technical accuracy it may well be
much more difficult/impossible to play in Tal style at the highest levels (and
Kasparov or similar style would be very difficult (but imo not impossible, eg if
some (young?) GM's (with high tactical prowess) would look more into P4 playing style from
now on (although that's a bit of a speculation, being a correspondence player and not
strong Otb this is difficult for me to judge ofcourse).
PS for P4 testing in winboard (*) also found an even stronger Wwinb engine
than Marvin, Slowchess; but then i expect P4 to lose most of the time
even with a 'perfect' book. As has been noted, high 'aggresiveness' (usually more
sharpness) at highest levels goes at expense of Elo strength; yet my feeling is
that at highest Elo we haven't reached the optimum yet, and there could
be scope for some more 'aggressiveness' at the highest Elo's (something for
the Obsidian developers to consider, maybe; just my 2 cnts).
(*) update of my Chessgambiteer package (on sourceforge) coming soon
some preliminary testing against Crafty (GM level) indicated that with
the gambit book it wins more games then when using a 'perfect' book with ply 8
(i used an elo2600.bin with ply 8 and while P4 then also often wins against Crafty
the games are not so spectacular, longer, and more like slow buildup of
kings attacks rather than sacrifices).
As for this gambit book (gambits.bin) although i've done quite some work on it,
it could be tuned a bit further ofcourse (which i'm doing sometimes, if it -rarely-
plays a losing gambit line against crafty; if an engine has book learning in addition
to the polyglot book, then over time it would improve in strength.
NB at levels above 3000 (above world champ level) the gambit book wouldnt'
be suitable anymore, as i tested in some P4-Marvin games, then a 'perfect'
book as eg. the Pohl suggestion would play better but you wouldn't get
such spectacular games (P4 won't go into self invented gambits from such
a strong book, maybe P3 would have done this, at the expense of lower strength,
but P4 not anymore). So, at highest levels less fireworks ofcourse, but with P4 still
more interesting games then eg. the current Fide human world championship

Ofcourse playing more risky would cost more energy for the human players, and
we don't seem to have nowadays any more players with style as eg. Tal (or a
bit less sharp/aggressive, but more solid Kasparov); nowadays with the comps
and bases and all preparations and higher technical accuracy it may well be
much more difficult/impossible to play in Tal style at the highest levels (and
Kasparov or similar style would be very difficult (but imo not impossible, eg if
some (young?) GM's (with high tactical prowess) would look more into P4 playing style from
now on (although that's a bit of a speculation, being a correspondence player and not
strong Otb this is difficult for me to judge ofcourse).
PS for P4 testing in winboard (*) also found an even stronger Wwinb engine
than Marvin, Slowchess; but then i expect P4 to lose most of the time
even with a 'perfect' book. As has been noted, high 'aggresiveness' (usually more
sharpness) at highest levels goes at expense of Elo strength; yet my feeling is
that at highest Elo we haven't reached the optimum yet, and there could
be scope for some more 'aggressiveness' at the highest Elo's (something for
the Obsidian developers to consider, maybe; just my 2 cnts).
(*) update of my Chessgambiteer package (on sourceforge) coming soon
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Re: Aggressive Opening book?
hava link for gambits and traps ?jefk wrote: ↑Fri Dec 06, 2024 12:16 pm (posted earlier in P4 thread but it belongs here ofcourse, so copied)
bigger gambit book (posted and explained in this forum some time ago);
polyglot format
https://sourceforge.net/projects/chess- ... n/download
decent and sharp book for P4 (crazy/unsound gambits were removed
and less sound gambits have lower playing frequencies); includes many
relatively unknown (or new) gambits for White and Black
anyone knows where this trap.ctg (c32) book can be found?
(assuming the t is not misspellled and should be c); meanwhile i found this,
https://fauziakram.gumroad.com/l/traps
but i don't think i'm going to spend 19 bucks on it
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- Joined: Sun Jul 25, 2010 10:07 pm
- Location: the Netherlands
- Full name: Jef Kaan
Re: Aggressive Opening book?
well there exists a lot of info about gambits,
the gambits i included in that book were chosen carefully
here's some general info (list) with gambits
https://web.archive.org/web/20210218014 ... i.org/edg/
as for traps, well there could be some books about them, I remember
a book with 'traps and zaps' in the title but that's probably a bit outdated
the gambits i included in that book were chosen carefully
here's some general info (list) with gambits
https://web.archive.org/web/20210218014 ... i.org/edg/
as for traps, well there could be some books about them, I remember
a book with 'traps and zaps' in the title but that's probably a bit outdated
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Re: Aggressive Opening book?
I wonder how an opening book with traps look like, and how to construct one. One idea is creating an opening book with which an engine (or the GUI to be precise) would play hope chess, e.g., it will set up traps and if you fall for a trap, then fine, else the engine may get a slightly worse position. Is there somewhere a large collection of hope chess lines? Or even better, an engine that always plays hope chess.
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Re: Aggressive Opening book?
Thank you!pohl4711 wrote: ↑Wed Dec 04, 2024 6:18 amA small Gambit Openingbook for Patricia. Made of the Gambit files by J.Noomen (double lines were deleted, 1.f4, 1.b4 and 1.g4 werde deleted).JManion wrote: ↑Tue Dec 03, 2024 9:02 pm Hello
After seeing Patricia's games over the last few months, I wondered if anyone had/knew of an opening book specializing in aggressive openings for both sides. I am not looking to use it for engine matches but for my opening prep. Chessbase format would be best.
Thank you for the advice!
https://www.sp-cc.de/files/noomengambit_book.7z
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Re: Aggressive Opening book?
actually there are many fun gambits after 1.f4