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Wang Hao vs Deepan Chakkravarthy J
World Junior Championship (2007), Yerevan ARM, rd 6, Oct-08
Semi-Slav Defense: Anti-Moscow Gambit (D44)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Oct-09-07  notyetagm: Wow, what a nasty finish by Wang Hao:

37 ... ♖f7-d7? <lpdo> 38 f2-f4! <remove the guard:driving off> ♖d7x♖d6 39 f4xe5! <zwischenzug>

Position after 37 ... ♖f7-d7? <lpdo> 38 f2-f4! <remove the guard>:


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Position after 38 ... ♖d7x♖d6 39 f4xe5! <zwischenzug>:


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If White recaptures the Black d6-rook mmediately with 39 ♕c5x♖d6?!, then Black will have time to save the threatened Black e5-knight from the White f4-pawn.

So instead White (Wang Hao) plays the much(!) stronger <ZWISCHENZUG> 39 f4xe5!, with a <DISCOVERED ATTACK> on the Black f6-queen and a <PAWN FORK> of the Black f6-queen and d6-rook. Note that -both- of these Black heavy pieces are attacked twice, so Black is unable to meet the threat to his Black d6-rook by simply moving his f6-queen to defend it.

White will then regain his rook after Black saves his queen, emerging a whole piece ahead. Or Black can play 39 ... ♕f6x♖f1+, but then White has the winning advantage of ♕♗ versus ♖♖.

<ZWISCHENZUG> is my favorite tactic. It takes great tactical ability and alertness to execute a <ZWISCHENZUG>. But when they work, as Wang Hao's 39 f4xe5! does here, they usually win on the spot or confer some other advantage, usually pretty large.

Oct-09-07  notyetagm: This Wang Hao can really play some tactics.
Oct-11-07  somitra: I think black should have played 35 ... Nf3+ to exchange the Knight with the Bishop. (If white king moves then 36 ...Qe4.) Black played quite poorly towards the end. 37 Rd7? is horrible, but I guess Black was already losing by then.

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