D Sceviour wrote: ↑Sun Jan 20, 2019 1:53 am
AndScacs finds an opening innovation that whips up an attack on the king side. The line starts with 8.Re1? This unusual move is from the Cerebellum book. The normal move is 8.b4. Blacks response 8...Be6! is not found in the databases that I have. Maybe someone can find it somewhere. After this, Schooner is outplayed.
D Sceviour wrote: ↑Sun Jan 20, 2019 1:53 am
AndScacs finds an opening innovation that whips up an attack on the king side. The line starts with 8.Re1? This unusual move is from the Cerebellum book. The normal move is 8.b4. Blacks response 8...Be6! is not found in the databases that I have. Maybe someone can find it somewhere. After this, Schooner is outplayed.
Hiarcs book has Be6 as a ? and recommends Ba7.
--Jon
[d]r1bq1rk1/1pp2ppp/p1np1n2/2b1p3/P1B1P3/2PP1N2/1P3PPP/RNBQR1K1 b - - 2 8
From a theoretical opening point of view, white's response 9.BxB seems bad. It allows black to a obtain a pawn steamroller formation in the center, and a black gets a rabid attack on the f-file. White has a already conceded the f-file defender with 8.Re1. Yet, any other 9th move for white is worse and concedes black a different kind of initiative. I am not an opening master, nor could anyone pretend to out-think the processors, but this seems like an opening novelty. Hiracs 8...Ba7 misses something.
I was impressed with the JDSelect2017.pgn used by Graham Banks in one of his tournaments. Do you have an opening book repository publicly available?
D Sceviour wrote: ↑Sun Jan 20, 2019 3:54 am
From a theoretical opening point of view, white's response 9.BxB seems bad. It allows black to a obtain a pawn steamroller formation in the center, and a black gets a rabid attack on the f-file. White has a already conceded the f-file defender with 8.Re1.
Stockfish evaluates White as better out of the opening. I think White started to go wrong a little later on, maybe with 14. Bxf4.
I was impressed with the JDSelect2017.pgn used by Graham Banks in one of his tournaments. Do you have an opening book repository publicly available?
My book is publicly available but it's a nonstandard format, so not really usuable with programs besides Arasan.
There is an annotated PGN file that has all the manually tuned book weights and a lot of opening theory checked into my github repository, though: https://github.com/jdart1/arasan-chess
I have made some steps towards having an online searchable book but that isn't ready.
D Sceviour wrote: ↑Sun Jan 20, 2019 1:53 am
AndScacs finds an opening innovation that whips up an attack on the king side. The line starts with 8.Re1? This unusual move is from the Cerebellum book. The normal move is 8.b4. Blacks response 8...Be6! is not found in the databases that I have. Maybe someone can find it somewhere. After this, Schooner is outplayed.
Hiarcs book has Be6 as a ? and recommends Ba7.
--Jon
Komodo 12.3 starts with Ba7 but switches to Be6 very quickly, but then can't make up its mind between that and h6.
hgm wrote: ↑Sat Jan 19, 2019 11:38 pm
Myrddin disconnected after 6 rounds, and had to be forfeited.
Very sorry about that. My wife assured me that she had set her new laptop, which is much faster than mine, so that it wouldn't go to sleep when not connected to power. Oh well....
Modern Times wrote: ↑Sun Jan 20, 2019 8:32 am
Komodo 12.3 starts with Ba7 but switches to Be6 very quickly, but then can't make up its mind between that and h6.
[d]r1bq1rk1/1pp2ppp/p1np1n2/2b1p3/P1B1P3/2PP1N2/1P3PPP/RNBQR1K1 b - - 2 8
In spite of centuries of opening theory and billions (trillions?) of games, it is amazing how much hot water a game can wade into in only 8 moves. The problem is the Cerebellum book move 8.Re1? I need to find a better polyglot book than Cerebellum.
[d]r1bq1rk1/1pp2ppp/p1np1n2/2b1p3/P1B1P3/2PP1N2/1P3PPP/RNBQR1K1 b - - 2 8
It can be concluded:
8.b4 is the strongest move as expected.
8.Re1 Be6 can expect no better than equality although this is better than expected for white.
SchaakMachine was playing not Skipper. Probably ics uses the name of the Skipper account. Otherwise it might have displayed SkipperWinB in previous tournaments.