Author: Roy Eassa
Date: 15:54:15 12/19/02
Go up one level in this thread
On December 19, 2002 at 16:43:01, Martin Giepmans wrote:
>On December 19, 2002 at 14:46:06, Roy Eassa wrote:
>
>>On December 19, 2002 at 14:21:21, Martin Giepmans wrote:
>>
>>>On December 19, 2002 at 12:23:09, José Antônio Fabiano Mendes wrote:
>>>
>>>> Fischer vs Stein, 1967 Sousse Interzonal
>>>> [D]3q3r/4b1k1/4P1p1/rpp2p1p/1nn2Q2/5N1P/P4PP1/RBB1R1K1 w
>>>> And here Fischer played 29. Bxf5, a move that baffles me.
>>>> Please see ==> http://www.mark-weeks.com/chess/67fs07.htm
>>>
>>>White seems to be in trouble and perhaps Bxf5 is the only way out.
>>>
>>>SpiderChess chooses Bxf5 after 5 minutes and 20 seconds (AMD 2000 XP)
>>>but the score is still negative after 22 minutes.
>>>
>>>PV at depth 13:
>>>0:21:59 - 0.78 B1xF5 G6xF5 F3-E5 C4xE5 E1xE5 D8-D4 F4-G3 G7-H7 E5xF5
>>> D4-D1 G1-H2 H8-F8 C1-D2 H5-H4 G3-C7 D1xA1 C7xE7 A1-G7
>>> E7xH4 H7-G8 F5xC5
>>>
>>>Martin
>>
>>
>>I've analyzed this game extensively and I think both sides can improve from the
>>above. I also do think that Bxf5 was Fischer's best move, which wins unless
>>Black plays perfectly:
>>
>>
>>1.Bxf5!? {other moves are worse}
>>
>>1...gxf5
>>
>> [1...Qf8 2.Be4 Qxf4 3.Bxf4 was actually played]
>>
>>2.Qg3+
>>
>> [2.Ne5 Nxe5 3.Qxe5+ Bf6 4.Qg3+ Kh7 5.Qf4 unclear but not bad]
>
>
>In the position after Bxf5 gxf5 Ne5 Nxe5 my engine plays Rxe5 (instead of Qxe5)
>with a drawish score at depth 13:
>0:06:08 - 0.06 E1xE5 D8-D1 G1-H2 D1-D6 F4-G3 G7-F8 C1-F4 F8-E8 E5-E3
> D6-A6 G3-G7 H8-F8 G7-G6 E8-D8 G6xH5
>
>(It doesn't like Qxe5: -1.03 at depth 14)
A good reason to play 4.Qg3+ instead, as in the main line!
>
>Martin
>
>>
>>2...Kh7 3.Ng5+ Bxg5 4.Bxg5 Qb8
>>
>> [4...Ra3! =+]
>>
>>5.Qh4 Qe8 6.Rad1 Ra7
>>
>> [6...Nb6 7.Rd8 Qg6 8.e7 Ra8 9.Re6! +-
>> (9.e8Q Rxe8 10.Rexe8 Rxd8 11.Rxd8 also wins) ]
>>
>>7.Rd8! Qg6 8.e7! Re8
>>
>> [8...Ra8 9.e8Q
>> (or 9.Re6! +- )
>> 9...Rxe8 10.Rexe8 +-]
>>
>>9.Re6 Raxe7 10.Bxe7 Qxe6 11.Qxh5+ Qh6
>>
>> [11...Kg7 12.Rxe8 Qe1+ 13.Kh2 Qe5+ 14.g3 and Black gets mated]
>>
>>12.Qf7+ Qg7 13.Qxe8 and Black cannot avoid mate
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