Author: Sune Larsson
Date: 11:02:04 07/25/01
Go up one level in this thread
On July 25, 2001 at 12:43:45, Albert Silver wrote: >On July 25, 2001 at 12:25:00, Albert Silver wrote: > >>On July 25, 2001 at 06:40:11, Sune Larsson wrote: >> >>>On July 25, 2001 at 00:36:00, Dann Corbit wrote: >>> >>>>On July 24, 2001 at 23:06:58, John Hatcher wrote: >>>> >>>>>On July 24, 2001 at 20:57:16, Dann Corbit wrote: >>>>> >>>>>>Not for me, it was asked in this message: >>>>>>http://www.icdchess.com/forums/1/message.shtml?180953 >>>>>> >>>>>>Since the header of that message is not descriptive of the actual problem, I >>>>>>thought I would start a new thread so that the OP might find the answer. >>>>>> >>>>>>I'm pretty well ignornant when it comes to CB. >>>>> >>>>>In all seriousness, why would anyone want to build an opening book from 1.5 >>>>>million games? >>>> >>>>That's a pipsqueak compared to some database files I know of. >>>>I know of one collection with 7.1 million games between rated players. >>>> >>>>>Surely, 1.3 million of the games would be between Joe Blow and >>>>>Norm Nobody. Who cares what they played in the opening? I would be very >>>>>surprised if all the recorded games between International Masters and >>>>>Grandmasters totaled more than 300,000 games. >>>> >>>>Prepare to be surprised. I have 380K in my tiny (highly filtered) set of 2.5 >>>>million games. I throw out any games with the same move sequence. There are >>>>lots of non-duplicate games that get clubbed from that. >>>> >>>>I have about one million games between computer opponents. Perhaps I want to >>>>include those also. >>>> >>>>>I extracted, from a database of 1.5 million games, all the games where both >>>>>players have an actual, or historical (e.g., Capablanca), rating of 2500+ >>>>>There are only about 100,000 games in that book. >>>>> >>>>>I wouldn't want a book comprised of 1.5 million games. There'd be a lot of >>>>>chaff with the wheat. >>>> >>>>Well, to each his own. I wasn't asking for me, but (rather) for someone else. >>>>Anyway, I think it's shortsighted to try to decide what is better for other >>>>people. >>>> >>>>Imagine (for instance) that they want to prepare for someone of ELO 1800 in >>>>their database. They might notice (for instance) that they lose 70% of the time >>>>to the french defense. >>>> >>>>In my case, I intend to (at some point) analyze every move that has ever been >>>>played. I estimate there are about one billion distinct positions in that >>>>category. >>> >>> >>> Wow Dann, analyzing every move that has ever been played... In that case >>> please add the following little curiosity. ;-) It's a game played in the >>> club-ch 30 years ago when I was a very young junior. >>> >>> White: Larsson,S Black: Teikari,H >>> >>> 1.e4 e5 2.Nf3 Nf6 3.Bc4 (always attacking at that time...;-) >>> 3.-d5 (home cooked brewage) 4.exd5 e4 5.Qe2 (played after pondering 30 min - >>> the point of this move is shown in the 9th move.) 5.-Be7 6.Ne5 Qd6 >>> 7.Bb5!+ (looks very weird - the white knight is threatened and this move >>> just puts another piece en prise.) 7.-c6 8.dxc6 bxc6 9.Qc4!! (The point - >>> black's double threats are turned into ditto for white, c6 and f7 are hanging >>> + an x-ray attack on c8!) The black player was clearly shocked here and >>> castled - 9.-0-0. After 10.Nxc6 he was two pawns down and white won after >>> 40 moves, 1-0. A nice memory. >>> >>> Sune >> >>Nice one Sune. :-) One question: can't Black play 9...Be6 and if 10.Bxc6+ Kf8 >>leaving the pieces en prise and the queen now attacked? I'd have to check it on >>a board, but it looks ok at first view. > > >Just for the fun of it, here's one of mine (atypical BTW) when I was still >starting out. I was rated 1510 at the time, and can't remember the opponent's >name. > >W: Silver, A. B: Some guy. > >1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 0-0 6.Bd3 Nbd7 (I didn't know a thing >on this) 7.e5 Ne8 8.Ne4 e6 9.h4 h5 10.Nfg5 dxe5 11.dxe5 Qe7 (I knew he was >planning on f6) 12.g4 hxg4 13.h5 f6 14.h6! (I think it's a !. I haven't looked >at this in a LONG time) Bh8 15.h7+ Kg7 16.Qxg4 fxg5 17.Qh3! (my opponent visibly >shaken resigned) > > Albert You are correct, the best move for black is clearly 9.-Be6. I remember when calculating on 5.Qe2 that I saw as far as 9.-Be6 10.Bxc6+. In this variation, after 10.-Kf8, white must take on a8. I'm happy that Fritz still gives advantage for white - but the position is far from clear. Your game was very fiery and nice. Clearly displaying potential for more than 1500 in rating. And I know that you moved on...;) Pleasant memories... This one is my first corr-game ever, played as a young teen after about 1 year in a chess-club. Hope comp analysies don't kill it... White: Larsson Black: Gillström 1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5 5.Bc4 e6 6.Nc3 Bxc5 7.d4 Nxc3 8.bxc3 Be7 9.Qg4 g5?! 10.h4! h5 11.hxg5! hxg4 12.Rxh8+ Bf8 13.g6! fxg6 14.Bh6 Qe7 15.Bd3! Kf7 16.Bxf8 Qg5 17.Bh6 Qh5 18.Rh7+ Ke8 19.Ne2! c6 20.Nf4 1-0 Sune
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