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Bill Wall vs Johnny Thomas
Bahamas (1977)
Sicilian Defense: Alapin Variation. Barmen Defense Central Exchange (B22)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
May-02-04  Phoenix: Oooopsie.
May-02-04  iron maiden: As Seirawan would describe it, "The Queen That Never Came Home."
Jan-02-06  DeepBlade: <iron maiden> hahaha nice one!

Undermining + Discovered Attack
2 combo bonus = 20000 points
1 Queen down = 50000 points

Its game over for Black

Jul-01-19  sea7kenp: I don't understand how Chessgames.com gets Sicilian for this opening. Looks more like a Caro-Kann to me.
Jul-01-19  john barleycorn: <sea7kenp: I don't understand how Chessgames.com gets Sicilian for this opening. Looks more like a Caro-Kann to me.>

That's a CG speciality ...

Jul-08-19  sea7kenp: <john barleycorn> Chessgames also, so far, has not responded to my Correction Slip.

Oh well.

Jul-09-19  morfishine: Does it really matter in the Long Run?
Jul-09-19
Premium Chessgames Member
  Sally Simpson: ***

They have it down as an Alapin because of the way it transposes.

This Alkhoori Eisa Mohmood vs Zaali Zhorzholiani, 2016 is an Alapin and reaches the same position


click for larger view

after 6 moves and has the same conclusion.

***

Jul-09-19  SChesshevsky: <They have it down as an Alapin because of the way it transposes.> Maybe so but typically to get a Sicilian you see a ...c5 and to get an Alapin a c3. Here you have neither. I might classify this as some sort of Caro Exchange or Panov where white transposes versus the other game that seems to meet Sicilian Alapin criteria from the start. But also agree with morfishine in questioning, does it really matter?
Jul-10-19
Premium Chessgames Member
  perfidious: The position which arises after 1.d4 Nf6 2.c4 c5 3.e3 cxd4 4.exd4 d5 is a Caro-Kann Exchange, but the almighty openings compendium here would doubtless not classify it as such.

There was also Keres vs J L Watson, 1975, which featured 1.d4 Nf6 2.Nf3 c5 3.c3, after which Black might have gone in for 3....cxd4 4.exd4 d5, an Exchange Slav by transposition--though ....c6 was never played.

Jul-10-19
Premium Chessgames Member
  Sally Simpson: ***

Hi Perfidious,

I think, and it is a guess, that the opening system here looks to see what was the most common way to reach a position. It may do a search from moves say 6-12 to catch transpositions. This postion...


click for larger view

...the clear majority have come from ECO B22 the Alapin. My Database has over 1,000 B22's just a handful of the others. Maybe that is how it classify's the openings and may help to explain some of the other odd opening names that appear out of context here.

Quite a few players has stumbled into this pitfall.

The trap was sprung with White taking on c6. From the above position the game J Perlis vs Tartakower, 1907 continued with White taking on c6 a few moves later and resigning.

***

Nov-10-19  sea7kenp: Thank you for the explanation, <Sally Simpson>!

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