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Miguel Clua Ballague vs Raymond Keene
Siegen Olympiad qual-2 (1970), Siegen FRG, rd 8, Sep-12
English Opening: Anglo-Indian Defense. Old Indian Formation (A15)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jan-23-22
Premium Chessgames Member
  ray keene: To my astonishment I have just discovered that this game in its opening stages essentially duplicates Spielmann v Grunfeld Marienbad 1925. Amazing.
Jan-23-22  Z truth 000000001: Using <SCID>'s tree feature, and <Millbase>, I have the following games transposing to the position of this game:

<After White's 8.O-O>


click for larger view

Spielmann vs Gruenfeld, 1925 after 8.d3 - Marienbad (May 1925)

Reti vs Yates, 1925 after 8.d3 - Moscow (Nov 1925)

M Karff vs D Trepat de Navarro, 1939 after 8.a3 - Buenos Aires (Aug 1939)

Interesting to note that Reti and Yates were also at Marienbad.

* * * * *

With <CG>'s formatting, the following might be hard to read, but here's <SCID>'s tree stats for the position:

<
Move ECO Frequency Score AvElo Perf AvYear %Draws

1: Nh5 30: 35.2% 51.6% 2363 2320 1989 23%
2: h6 27: 31.7% 59.2% 2369 2395 1995 15%
3: Re8 7: 8.2% 64.2% 2400 1999 43%
4: Bg4 7: 8.2% 21.4% 2316 1990 43%
5: Bd7 7: 8.2% 42.8% 2416 1968 0%
6: a5 2: 2.3% 75.0% 2386 2004 50%
7: Bf5 1: 1.1% 50.0% 2713 1999 100%
8: Ne8 1: 1.1% 100.0% 1986 0%
9: Be6 1: 1.1% 100.0% 2354 2004 0%
10: a6 1: 1.1% 50.0% 2285 1985 100%
11: Nd7 1: 1.1% 0.0% 1987 0%
__________________________________________
TOTAL: 85:100.0% 52.9% 2375 2383 1991 24% >

8...Nh5 is Black's most popular move, getting a balanced result (52% score (for white)).

In this game, it seems 10.Na3 and 11.dxe4 could be improved upon.

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