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Wang Hao vs Dmitry Andreikin
World Junior Championship (2007), Yerevan ARM, rd 11, Oct-14
Old Indian Defense: Normal Variation (A55)  ·  1/2-1/2



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Kibitzer's Corner
Oct-14-07  s4life: Was 75 Ke5 forced? I thinkg W. Hao threw away the win...
Oct-15-07  tiger petrosinian: you mean 71? 71.Ke4 is a draw after 71...Nb3. So, have you tried 71. Kf4 ?
Oct-15-07  notyetagm: Position after 60 ♘g6xe5!:

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60 ♘g6xe5! exploits the <BACKWARD PIN> on the Black d6-pawn by the White f8-bishop against the <UNDEFENDED> Black a3-knight.

After 60 ... d6xe5 61 ♗f8x♘a3 White has regained his piece.

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Oct-15-07  notyetagm: Position after 60 ♘g5xe6!:

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60 ♘g6xe5! is possible only due to the <BALEFUL INFLUENCE> of the White f8-bishop against the <UNDEFENDED> Black a3-knight through the Black d6-pawn.

<<<You do not want -anything(!)- of value (<LMS-TARGETS>) to be on the line of your opponent's line pieces!>>>

And if you cannot avoid this rather severe tactical liability, then you must be -extremely- careful that you do not <OVERWORK> one of your pieces by having it <BLOCK THE CORRIDOR> of the dangerous enemy line piece while at the same time <DEFENDING> a square.

Here, for example, the Black d6-pawn must meet the threat of ♗f8x♘a3 by <BLOCKING> the diagonal a3-f8 while this Black pawn also meets the threat of ♘g6xe5 by <DEFENDING> this square. Hence the Black d6-pawn is <OVERWORKED>, since it cannot meet both threats all by itself.

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