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Subject: Any engine out there select Qf1? What does Anmon see that others do not?

Author: Cliff Sears

Date: 16:15:16 11/13/04

[d] 4rr1k/pppb2bp/2q1n1p1/4p3/8/1BPPBN2/PP2QPP1/2KR3R w - - 0 20

Out of Crafty1917, Tiger14, Hiarcs8, Anaconda162, and AnMon 5.40 only AnMon
selects the move played by Steinitz

Commentary from "The Mammoth Book of The World's Greatest Chess Games" by
Burgess, Nunn, and Emms states:

""More attacking than defensive" - Steinitz.  This subtle queen retreat, which
has many different purposes, is a move of star quality.  Firstly White removes
the queen from the e-file, thus eliminating many of Black's tactical tricks
involving ...Nf4 and ...Nd4. There is also a much deeper aspect to 20 Qf1 which
becomes obvious very soon."

wKc1,Qe2,Nf3,Bb3,e3,Rd1,h1,Pa2,b2,c3,d3,f2,g2/bKh8,Qc6,Ne6,Bd7,g7,Re8,f8,Pa7,b7,c7,e5,g6,h7

Steinitz,W (2590) - Chigorin,M (2600) [C65]
GCG_005 Havana (4), 1892

1.e2-e4 e7-e5 2.Ng1-f3 Nb8-c6 3.Bf1-b5 Ng8-f6 4.d2-d3 d7-d6 5.c2-c3 g7-g6
6.Nb1-d2 Bf8-g7 7.Nd2-f1 0-0 8.Bb5-a4 Nf6-d7 9.Nf1-e3 Nd7-c5 10.Ba4-c2 Nc5-e6
11.h2-h4 Nc6-e7 12.h4-h5 d6-d5 13.h5xg6 f7xg6 14.e4xd5 Ne7xd5 15.Ne3xd5 Qd8xd5
16.Bc2-b3 Qd5-c6 17.Qd1-e2 Bc8-d7 18.Bc1-e3 Kg8-h8 19.0-0-0 Ra8-e8 20.Qe2-f1
a7-a5 21.d3-d4 e5xd4 22.Nf3xd4 Bg7xd4 23.Rd1xd4 Ne6xd4 24.Rh1xh7+ Kh8xh7
25.Qf1-h1+ Kh7-g7 26.Be3-h6+ Kg7-f6 27.Qh1-h4+ Kf6-e5 28.Qh4xd4+ 1-0

Steinitz,W - Chigorin,M
4rr1k/pppb2bp/2q1n1p1/4p3/8/1BPPBN2/PP2QPP1/2KR3R w - - 0 1

Analysis by AnMon5.40:
± (0.73): 20.Qe2-f1 Re8-e7 21.Nf3-g5 Qc6-d6

Steinitz,W - Chigorin,M
4rr1k/pppb2bp/2q1n1p1/4p3/8/1BPPBN2/PP2QPP1/2KR3R w - - 0 1

Analysis by Crafty 19.17:

1. = (0.04): 20.Qe2-c2 Rf8-f5 21.Kc1-b1 Ne6-f4 22.Nf3-h4 Rf5-g5 23.Bb3-f7
2. = (0.00): 20.Qe2-d2 Re8-e7 21.Rh1-h4 Rf8-f5 22.Rd1-h1 Bg7-f6 23.Rh4-g4
3. = (-0.05): 20.Qe2-e1 a7-a5 21.Kc1-b1 a5-a4 22.Bb3-c2 Ne6-f4 23.Nf3-g5

Steinitz,W - Chigorin,M
4rr1k/pppb2bp/2q1n1p1/4p3/8/1BPPBN2/PP2QPP1/2KR3R w - - 0 1

Analysis by Hiarcs 8:

1. ± (1.02): 20.Qe2-d2 Qc6-d6
2. ± (0.87): 20.Qe2-c2 Rf8-f5
3. ± (0.78): 20.Kc1-b1 a7-a5
4. ± (0.77): 20.Rh1-h2 Ne6-f4
5. ± (0.77): 20.Rh1-h4 Ne6-f4
6. ² (0.56): 20.Qe2-f1 a7-a5
7. ² (0.55): 20.Rd1-g1 a7-a5 21.Kc1-b1 a5-a4
)

Steinitz,W - Chigorin,M
4rr1k/pppb2bp/2q1n1p1/4p3/8/1BPPBN2/PP2QPP1/2KR3R w - - 0 1

Analysis by Chess Tiger 14.0:

1. +- (1.62): 20.Qe2-d2 h7-h5 21.Rh1-h4
2. +- (1.62): 20.Qe2-c2 Ne6-f4 21.Nf3-g5 h7-h6 22.Rh1-h2 Bd7-f5 23.g2-g3 Nf4-d5
24.Rd1-h1 Nd5xe3 25.f2xe3
3. +- (1.52): 20.Rh1-h2 Ne6-f4

Re: Any engine out there select Qf1? What does Anmon see that others do not? Andrew Platt 04:32:44 11/15/04
- Re: Any engine out there select Qf1? What does Anmon see that others do Cliff Sears 17:28:34 11/15/04
Re: Any engine out there select Qf1? What does Anmon see that others do not? Dan Ellwein 12:34:30 11/14/04
Re: Any engine out there select Qf1? What does Anmon see that others do not? Kurt Utzinger 22:52:18 11/13/04
- Re: Any engine out there select Qf1? What does Anmon see that others do Cliff Sears 10:26:53 11/14/04
  - Re: Any engine out there select Qf1? What does Anmon see that others do Daniel Jackson 20:25:31 11/14/04
    - Re: Any engine out there select Qf1? What does Anmon see that others do Cliff Sears 17:29:40 11/15/04

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