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Alberto David vs Eduardas Rozentalis
International Championship of Paris (2008), Paris FRA, rd 6, Jul-03
Queen's Gambit Accepted: Central Variation. Alekhine System (D20)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Jul-14-08  notyetagm: <A SQUARE CAN BE A TACTICAL TARGET>

From Chess Today 2802; I added the diagrams:

<
White: David (2562)
Black: Rozentalis (2582)
Championship of Paris (6), 03.07.2008
The Queen's Gambit Accepted – [D20]


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20...Nd3? A blunder in an objectively
lost position.


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21.Re4! 1–0. Black resigned as he
was losing a piece.>

21 ♖e1-e4! is a <DOUBLE ATTACK>, a <FORK> from the White e4-rook.

The White e4-rook <FORKS> the <UNDEFENDED> Black g4-bishop and the d4-forking square, from which the White e4-rook will <FORK> the Black d6-king and the <UNDEFENDED> Black d3-knight.

So 20 ... ♘e5-d3? is a -BLUNDER- because it <LINES UP> the Black d6-king and the <UNDEFENDED> Black d3-knight, turning the d4-square into a <TACTICAL BASE>. Remember, <A.C.T.S = ALIGNMENTS CREATES THREATENED SQUARES>. Here the alignment Black d6-king + <UNDEFENDED> Black d3-knight turns the d4-square into a <TACTICAL BASE>, a <FORKING SQUARE>.

Hence 21 ♖e1-e4! is a <DOUBLE ATTACK>, the e4-square being the <TACTICAL BASE>, the <UNDEFENDED> Black g4-bishop being one <TACTICAL TARGET>, and the d4-forking square being the second <TACTICAL TARGET>.

Jul-14-08  notyetagm: Position after 21 ♖e1-e4! 1-0


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Here the White e4-rook <FORKS> the <UNDEFENDED> Black g4-bishop and the d4-forking square, exploiting the <ALIGNMENT> of the Black d6-king and the <UNDEFENDED> Black d3-knight along the d-file.

Notice the similarity to the following <QUEEN FORK> from a variation of Capablanca vs Euwe, 1931.

(VAR) Position after 26 ♖b7x♖d7+ ♗f5x♖d7 27 ♕a2-a3!


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Golombek points out this instant win that Capablanca missed, this <QUEEN FORK> of the <UNDEFENDED> Black c3-bishop and e7-forking square, exploiting the <ALIGNMENT> of the Black g7-king and <UNDEFENDED> Black d7-bishop along the 7th rank.

So David's 21 ♖e1-e4! <FORKS> the <UNDEFENDED> Black g4-bishop and the d4-forking square, while Capablanca missed the idea of 27 ♕a2-a3!, <FORKING> the <UNDEFENDED> Black c3-bishop and the e7-forking square.

21 ♖e1-e4! and 27 ♕a2-a3! are <DOUBLE ATTACKS> in which one of the <TACTICAL TARGETS> is a <SQUARE>, in both cases a <FORKING SQUARE> (d4 and e7, respectively).

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