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Subject: Re: 5moves.ctg: F4 book options must be set to "normal"

Author: Mike S.

Date: 02:32:13 01/28/04

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On January 28, 2004 at 01:39:18, Kurt Utzinger wrote:

>(...)

>4.2 Moves from the report position
>
>Move   Frequency Score  AvElo Perf AvYear %Draws
>1: d4  45: 35.1% 48.8%  2003 31%
>2: e4  34: 26.5% 52.9%  2003 29%
>3: Nf3 19: 14.8% 28.9%  2003 26%
>4: c4  17: 13.2% 44.1%  2003 18%
>5: g3  10: 7.8%  70.0%  2003 40%
>6: b3  3:  2.3%  100.0% 2004 0%
>_______________________________________________________________
>TOTAL:128:100.0% 49.2%  2003 28%

Thanks. I'm somewhat concerned about the Score being <50%. It's known from
(older) comp-comp tournments played without any opening support though, that the
advantage of the first move tends to vanish in then. I don't know if this still
is the case with most recent engines and faster comps. Anyway I'd be surprised
if this would be the case after 5 bookmoves too.

This seems to be an interesting point to me. Maybe the number of games is
(still) to small for a conclusion.

But there seems to be a problem with 1.Nf3 28.9% (only) definetely. I'm afraid
my book is responsible, maybe leading to a position difficult for white (?).

The variant with the highest probability after 1.Nf3 is in 5moves.ctg:

1. Nf3 Nf6 2. c4 e6 3. d4 d5 4. Nc3 c6 5. e3 Bd6 (or 5... Nbd7) D45 Semi-Slav,
leading to these positions:

[D]rnbqk2r/pp3ppp/2pbpn2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 0 6

[D]r1bqkb1r/pp1n1ppp/2p1pn2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 0 6

I notice nothing special here. Looks "very normal" to me. I guess, if there's a
problem for the engines having white here, it must arise later.

mfg.
Michael



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