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Subject: Re: A very hard to find winning move that Junior 6 don't find !!

Author: Paulo Soares

Date: 15:23:04 02/16/00

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On February 16, 2000 at 16:21:25, Côme wrote:

>On February 16, 2000 at 14:24:20, Vincent Lejeune wrote:
>
>>On February 15, 2000 at 13:08:19, Côme wrote:
>>
>>>
>>>
>>>Hello,
>>>In this position:
>>>[D]4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1
>>>
>>>After 10 min on my K6 II 350 Junior 6 don't find the winning move Qxe5!! .
>>>I guess that no program is able to find this move but Can you test others
>>>programs ?
>>>Best Regards
>>>Alexandre Côme
>>
>>I don't see how white can progress after this sequence of moves :
>>
>>[Event "?"]
>>[Site "?"]
>>[Date "????.??.??"]
>>[Round "?"]
>>[White "?"]
>>[Black "?"]
>>[Result "*"]
>>[SetUp "1"]
>>[FEN "4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1"]
>>[PlyCount "12"]
>>
>>1. Qxe5 fxe5 2. Rf1 Rc7 3. Bd1 b5 4. Bb3 Rc4 5. Kh1
>>Qe7 6. Kg2 Qe8 *
>>
>>Here, if white wait while playing his rook between f1 and f3 or his king between
>>g2 and h1 then black can make no progress.
>>In my sens 1. Qxe5 is not winning it's simply drawing from in inferior position.
>>This draw is very deep (about 20 plies), a computer could find it after many
>>hours of "thinking".
>
>Hello Vincent,
>1. Qxe5!! is a winning move !!
>In your variation white play 5. Bxc4! followed by b4 and  will win !!
>Do you see now ?
>Best Regards
>Alexandre Côme

Yes! I tought in variant below, but why not 5. Bxc4, it's a fast
winning move.

1. Qxe5 fxe5 2. Rf1 Rc7 3. Bd1 b5 4. Bb3 Rc4 5. a4! a6 6. Rf3 Qe7 7.
Ba2 Qc5+ 8. Kg2 Qe7 9. b4 Qe8 10. axb5 axb5 11. Bxc4 bxc4 12. b5 Qe7
13. b6 {+-}

Paulo Soares, from Brazil



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