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Subject: Re: Missed Opportunities in comp vs comp at 40/2

Author: blass uri

Date: 07:58:49 09/01/98

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On September 01, 1998 at 10:33:07, Amir Ban wrote:

>On September 01, 1998 at 10:10:15, blass uri wrote:
>
>>
>>On September 01, 1998 at 08:42:30, Amir Ban wrote:
>>
>>>On September 01, 1998 at 07:17:44, Howard Exner wrote:
>>>
>>>
>>>>5. Rebel missed a chance to immediately transpose to a won ending with
>>>>the moves 1. Qxe6+ Qxe6 2. Rxe6 Kxe6. Black's passed d pawn can be
>>>>easily stopped while white's pawns are unstoppable. Instead Rebel played
>>>>the liguidating sequence 1. Qb7+ Kd4 2. Qb6+ Kd3 3. Qxe3+ Rxe3 4. Rxe3 Kxe3.
>>>>Note the better location now of black's king. Black should be able to draw this
>>>>now by advancing his d pawn.
>>>>4R3/5Q2/3pr3/p2k1p2/5P2/1P2q1PP/P6K/8 w - - id "Rebel 9.0 - Hiarcs 6.0"; am
>>>>Qb7+;
>>>>
>>>
>>>This is wrong. Qb7+ is the right move, and it wins a rook:
>>>
>>>1.Qb7+ Kd4 2.Qb6+ Kd3 3.Qb5+ Kc2 4.Qc4+ or 3...Kd2 Qd5+.
>>>
>>>How did Rebel manage to miss this ?
>>
>>I think that Rebel did not miss it because Rebel's line is also winning.
>>and Rebel prefered to win in a pawn endgame
>>
>
>???
>
>This pawn endgame is not won. Both sides queen, and what happens then is not
>clear. To prefer an unclear queen endgame over a simple win of a rook sounds a
>bit over-sophisticated to me.
>
>Besides, I guess Rebel didn't win this, otherwise why would Howard mention this
>position ?
>
>Amir
after 1.Qb7+ Kd4 2.Qb6+ Kd3 3.Qxe3+ Rxe3 4.Rxe3+ Kxe3 5.g4 d5
6.g5 d4 7.g6 d3 8.g7 d2 9.g8=Queen d1=Queen 10.Qg1+ white is winning

Rebel won this game but Howard thought that in the game black did a mistake
when he played 6...Kxf4 and this is the reson he mentioned this position

Uri



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