Test position: J. Polgar - Berkes

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Marc MP

Test position: J. Polgar - Berkes

Post by Marc MP »

[d]r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - - 0 14

If 1.Bxa8? then 1...g4 and white will lose the attacked knight because if it moves then 2...Bg5 pins the queen. That would leave black with 2 pieces for rook and pawn with a good game. But white has much better.

See the game annotated by GM Shipov here: http://www.chessib.com/polber3.html

The pgn is available here: http://www.chessgames.com/perl/chessgame?gid=1261813
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User avatar
Mike S.
Posts: 1480
Joined: Thu Mar 09, 2006 5:33 am

Re: Test position: J. Polgar - Berkes

Post by Mike S. »

A "sparkling" :mrgreen: avoid move test! On this occasion I noticed that Spark 0.3a achieves delightful calculation depths even on my old Pentium D (2*3.4 GHz):

Analysis by spark-0.3a-mp:

14.Bxa8 g4 15.Qd3 gxf3 16.Bxf3 Nf6 17.Kb1 Qd7 18.Qc4 b5 19.Qe2 Rd8 20.Rhe1 Nd5 21.Be4 Nf4 22.Qf3 Qd6 23.c3 Bd7 24.Qg4
+- (1.89) Depth: 1 00:00:00
-/+ (-0.81) Depth: 20/34 00:00:39 63456kN
14.g4 Rb8 15.h4 gxh4 16.g5 f5 17.Qf4 Kg8 18.Qxh4 Bd6 19.Bxf5 exf5 20.Qh7+ Kf7 21.Qh5+ Kg8 22.Qh8+ Kf7 23.Qh5+
=/+ (-0.59) Depth: 20/36 00:01:04 102mN
= (0.00) Depth: 21/42 00:01:56 166mN

I also like 18.Rh7+! later in the game, but this is much easier for engines.

[d]1r1q1r2/pbpnbpk1/1p2p1p1/6P1/3PBQP1/5N2/PPP2P2/2KR3R w - - 0 18
Regards, Mike
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meschle
Posts: 200
Joined: Tue Apr 01, 2008 11:53 pm

Re: Test position: J. Polgar - Berkes

Post by meschle »

Thanks very good postion :)

Only rybka 3 dynamic gets it fast

FEN: r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - - 0 14

Rybka 3 Dynamic 1-cpu:
2 00:00 106 6.384 +0.44 Be4xa8
3 00:00 137 8.252 +0.44 Be4xa8
4 00:00 1.077 64.873 -0.74 Be4xa8
5 00:00 1.486 89.509 -0.76 Be4xa8 g5g4
6 00:00 2.833 60.437 -0.77 Be4xa8 g5g4 Qd2d3 g4xf3
7 00:00 5.712 74.039 -0.80 Be4xa8 g5g4 Qd2d3 g4xf3 Ba8xf3 Nd7f6 Kc1b1
8 00:00 16.940 73.815 -0.70 Be4xa8 g5g4 Qd2e2 g4xf3 Ba8xf3 Nd7f6 Kc1b1 Qd8d7
9 00:00 25.223 78.505 -0.79 Be4xa8 g5g4 Qd2e2 g4xf3 Ba8xf3 Nd7f6 Kc1b1 Qd8d7 h2h4
10 00:00 47.528 79.784 -0.68 Be4xa8 g5g4 Qd2e2 g4xf3 Ba8xf3 Nd7f6 h2h4 Nf6d5 g2g3 Qd8d7
11 00:01 81.516 80.962 -0.73 Be4xa8 g5g4 Qd2e2 g4xf3 Ba8xf3 Nd7f6 h2h4 Nf6d5 g2g3 Qd8d7 Kc1b1
12 00:01 144.530 81.050 -0.68 Be4xa8 g5g4 Qd2e2 g4xf3 Ba8xf3 Nd7f6 h2h4 Nf6d5 g2g3 Qd8d6 Kc1b1 Rf8d8
12+ 00:03 222.084 73.596 -0.53 g2g4
12+ 00:09 676.181 72.163 +0.07 g2g4
12 00:21 1.646.598 77.309 -0.09 g2g4 Ra8b8 h2h4
13+ 00:25 1.888.142 75.018 +0.11 g2g4
13+ 00:31 2.229.068 73.302 +0.31 g2g4
13 00:33 2.442.871 74.407 +0.30 g2g4 Ra8b8 h2h4 g5xh4 g4g5 f7f5 Rh1xh4+ Kh8g8 Be4c6 Nd7e5 d4xe5 Qd8xd2+ Rd1xd2 b6b5 Rh4h2 Rb8b6 Bc6d7
14 00:36 2.612.362 73.247 +0.30 g2g4 Ra8b8 h2h4 g5xh4 g4g5 f7f5 Rh1xh4+ Kh8g8 Be4c6 Nd7e5 d4xe5 Qd8xd2+ Rd1xd2 b6b5 Rh4h2 Rb8b6 Bc6d7
15 01:00 4.241.132 71.638 +0.27 g2g4 Ra8b8 h2h4 g5xh4 g4g5 f7f5 Rh1xh4+ Kh8g8 Be4c6 Nd7e5 d4xe5 Qd8xd2+ Rd1xd2 b6b5 c2c4 b5xc4 Rh4xc4 Rb8b4 Rc4c3 Kg8f7 a2a3 Rb4g4 b2b4 Rf8d8 Bc6b5
16+ 02:16 9.248.970 69.589 +0.47 g2g4
Regards Mark

Quad Q6600 3.0 Ghz, Vista 64bit, 4gb Ram
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: Test position: J. Polgar - Berkes

Post by yanquis1972 »

r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - -

Engine: IvanHoe v70 x64 4T 128 (1024 MB)
by Yakov Petrovich Golyadkin, Igor Igorovi

18.01 0:01 -0.76 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.h4 Nd5 6.a3 Kg8 7.g3 Bf6 8.Rhe1 Bb5
9.Rc1 Ba4 10.Qd3 Qd7 11.Qc4 (10.693.844) 5398

18.40 0:02 -0.76 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.h4 Nd5 6.a3 Kg8 7.g3 Bf6 8.Rhe1 Bb5
9.Rc1 Ba4 10.Qd3 Qd7 11.Qc4 (11.258.482) 5345

19.01 0:03 -0.74 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.Qc3 Nd5 6.Bxd5 exd5 7.h4 Re8
8.Rde1 Kg8 9.Qf3 Qd7 10.h5 Qc6 11.h6 gxh6
12.Qg3+ Kh7 13.a3 (21.304.632) 5529

19.40 0:04 -0.74 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.Qc3 Nd5 6.Bxd5 exd5 7.h4 Re8
8.Rde1 Kg8 9.Qf3 Qd7 10.h5 Qc6 11.h6 gxh6
12.Qg3+ Kh7 13.a3 (22.256.332) 5487

20.40 0:08 -0.82-- 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.h4 Nd5 6.a3 Kg8 7.g3 Bf6 8.Rhe1 Bb5
9.Be2 Bc6 10.Bf3 Qd7 11.Qd3 Bb7
12.h5 (48.337.846) 5696

20.01 0:08 -0.77 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.Qc3 Kg8 6.h4 Nd5 7.Qb3 Qd6 8.h5 Bg5
9.Bxd5 exd5 10.Rhe1 Bh6 11.Qf3 c6
12.g3 Qb4 13.a3 (50.308.585) 5687

20.40 0:08 -0.77 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.Qc3 Kg8 6.h4 Nd5 7.Qb3 Qd6 8.h5 Bg5
9.Bxd5 exd5 10.Rhe1 Bh6 11.Qf3 c6
12.g3 Qb4 13.a3 (50.428.845) 5681

21.01 0:11 -0.77 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.Qc3 Kg8 6.h4 Nd5 7.Qb3 Qd6 8.h5 Bg5
9.Bxd5 exd5 10.Rhe1 Bh6 11.Qf3 c6
12.g3 Qb4 13.a3 (67.325.519) 5701

21.40 0:12 -0.77 1.Bxa8 g4 2.Kb1 Ba6 3.h3 gxf3 4.Bxf3 Nf6
5.Qc3 Kg8 6.h4 Nd5 7.Qb3 Qd6 8.h5 Bg5
9.Bxd5 exd5 10.Rhe1 Bh6 11.Qf3 c6
12.g3 Qb4 13.a3 (69.261.301) 5684

22.01 0:24 -0.74 1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bd6 4.h4 Qf6
5.Bc6 e5 6.Rhe1 exd4 7.Qxd4 Qxd4
8.Rxd4 Rd8 9.c3 Nf6 10.b3 Bf5+
11.Kb2 g6 12.f3 Kg7 13.g4 Be6 14.Rd2 (144.633.704) 5801

22.40 0:26 -0.74 1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bd6 4.h4 Qf6
5.Bc6 e5 6.Rhe1 exd4 7.Qxd4 Qxd4
8.Rxd4 Rd8 9.c3 Nf6 10.b3 Bf5+
11.Kb2 g6 12.f3 Kg7 13.g4 Be6 14.Rd2 (152.510.947) 5788

23.01 0:33 -0.75 1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bd6 4.h4 Qf6
5.h5 Qh6 6.Qe2 Nf6 7.g3 Kg8 8.Bc6 Qg5
9.Rdg1 e5 10.dxe5 Qxe5 11.Qxe5 Bxe5
12.Re1 Bd4 13.Re7 Bxf2 14.Rxc7 (192.784.425) 5826

23.40 0:36 -0.75 1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bd6 4.h4 Qf6
5.h5 Qh6 6.Qe2 Nf6 7.g3 Kg8 8.Bc6 Qg5
9.Rdg1 e5 10.dxe5 Qxe5 11.Qxe5 Bxe5
12.Re1 Bd4 13.Re7 Bxf2 14.Rxc7 (212.199.366) 5830

24.01 1:15 -0.82 1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bd6 4.h4 Qf6
5.h5 Qh6 6.Qd3 Kg8 7.g3 Rd8 8.Qe4 a5
9.Qa8 Qf6 10.Qe4 e5 11.h6 gxh6
12.Qg4+ Kf8 13.Qe4 c5 14.d5 (444.766.538) 5866

24.18 1:52 -0.67++ 1.g4 (660.108.812) 5862

24.01 2:07 -0.59++ 1.g4 (745.218.146) 5835

24.01 2:27 -0.47++ 1.g4 (857.849.480) 5833

24.01 3:04 -0.29++ 1.g4 (1.071.864.262) 5823

24.01 4:06 -0.02++ 1.g4 (1.440.672.329) 5853

24.01 8:00 +0.38++ 1.g4 (2.875.381.335) 5978

24.01 10:08 +0.98 1.g4 (3.658.650.301) 6016

best move: g2-g4 time: 10:08.295 min n/s: 6.016.000 CPU 0.1% n/s(1CPU): 1721.032.704 nodes: 3.658.650.301

rybka dynamic incredibly impressive on this one.
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Test position: J. Polgar - Berkes

Post by kgburcham »

Judit Polgar - Ferenc Berkes, Hunguest Hotels Super Chess Tournament 2003

[d] r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - - 0 1

Rybka 3:

14.g4
=/+ (-0.33 !) Depth: 17 00:00:23 6338kN
14.g4
= (-0.13 !) Depth: 17 00:00:30 7892kN
14.g4
+/= (0.27 !) Depth: 17 00:01:03 16065kN
14.g4 Rb8 15.h4[] g6 16.hxg5+[] Kg7 17.Qf4[] Bd6 18.Ne5[] Bxe5 19.dxe5 Rh8 20.Rxh8 Qxh8 21.Bc6 Qd8 22.Kb1 Kg8 23.a3 a6 24.f3 Kg7 25.Qd2 Qe7 26.Bxd7 Bb7 27.Qf4
+/- (0.83) Depth: 17 00:02:02 30624kN
14.g4 Ba6 15.h4 g6
+/- (0.91) Depth: 18 00:03:49 60356kN


FireBird 1.0 beta x64:

14.g4
=/+ (-0.69) Depth: 24 00:01:05 475mN
14.g4
=/+ (-0.61) Depth: 24 00:01:14 538mN
14.g4
=/+ (-0.49) Depth: 24 00:01:29 642mN
14.g4
=/+ (-0.31) Depth: 24 00:02:28 1060mN
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test position: J. Polgar - Berkes

Post by zullil »

Marc MP wrote:[d]r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - - 0 14
Stockfish-1.6.2 (8 threads)

Code: Select all

Searching: r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +1.66   00:00      109 Bxa8 Ba6 
 3     +2.06   00:00      527 Bxa8 g4 Ne5 Nxe5 dxe5 
 4     +2.06   00:00     1012 Bxa8 g4 Ne5 Nxe5 dxe5 
 5     +1.41   00:00     2782 Bxa8 g4 Ne5 Bg5 f4 gxf3 
 6  <  +0.12   00:00     4693 Bxa8 g4 Ne5 Bg5 f4 gxf3 
 7     -0.97   00:00    25361 Bxa8 g4 Qe2 gxf3 Bxf3 Nf6 Kb1 Nd5 Rhe1 
 8     -1.13   00:00    36212 Bxa8 g4 Qe2 gxf3 Bxf3 Nf6 Kb1 Nd5 Rhe1 Kg8 c4 
 9     -1.29   00:00    94578 Bxa8 g4 Qe2 gxf3 Bxf3 Nf6 Kb1 Kg8 Qc4 Bd7 Rhe1 b5 
10     -1.21   00:00   167318 Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 h4 Kg8 Qa6 Qb8 
11     -1.09   00:00   268056 Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 h4 Kg8 Rhe1 Nd5 
                              g3 Bb4 
12     -1.01   00:00   789118 Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 h4 Kg8 g3 a5 
                              Rhe1 Nd5 a3 Bf6 
13     -1.09   00:00    1507k Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 Rhe1 Kg8 a3 a5 
                              h3 c6 g3 Bd6 h4 
14     -1.09   00:01    2182k Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 Rhe1 Kg8 a3 a5 
                              h3 c6 g3 Bd6 h4 
15     -1.09   00:01    3974k Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 Rhe1 Kg8 a3 a5 
                              h3 c6 g3 Bd6 h4 
16     -0.97   00:01    7090k Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 Kb1 Bd7 Rhe1 Kg8 g3 a5 
                              h4 Nd5 c3 Bc6 a3 a4 
17     -0.97   00:02   14350k Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 h4 Kg8 Kb1 Nd5 c4 Ba6 
                              Qc2 Nb4 Qc3 Qd7 a3 Nc6 d5 
18     -1.05   00:03   20225k Bxa8 g4 Qd3 gxf3 Bxf3 Nf6 h4 Kg8 Kb1 Nd5 c4 Ba6 
                              Qc2 Nb4 Qc3 Qd6 a3 Nc6 c5 bxc5 dxc5 
19  >  -0.85   00:15  113228k Bxa8 Ba6 d5 e5 Qe1 Qxa8 h4 gxh4 Nxh4 Kg8 Qe4 Rd8 
                              Qg4 Bf6 Ng6 fxg6 Qe6+ Kf8 Rh8# 
20     -0.85   00:20  150592k Bxa8 Ba6 d5 e5 Qe1 Qxa8 h4 g4 Nxe5 Nxe5 Qxe5 Bd6 
                              Qh5+ Kg8 Qxg4 Re8 Qa4 Be2 Rd2 b5 Qd4 Be5 Qc5 Bd6 
21     -0.89   00:45  350341k Bxa8 g4 Qe2 gxf3 Bxf3 Kh7 h4 Rh8 g3 Nf6 Rhe1 Kg8 
                              Kb1 a5 a3 g6 d5 Bd6 dxe6 Bxe6 Qd3 a4 
22     -0.89   01:11  545267k Bxa8 g4 Qe2 gxf3 Bxf3 Kh7 h4 Rh8 g3 Nf6 Rhe1 Kg8 
                              Kb1 a5 a3 g6 d5 Bd6 dxe6 Bxe6 Qd3 Qe8 Bc6 Qxc6 
                              Rxe6 Kg7 Ree1 
23     -0.97   03:01    1381M Bxa8 g4 Kb1 Ba6 h3 gxf3 Bxf3 Nf6 h4 Nd5 h5 Bg5 
                              Qe1 Kg8 g3 Bh6 Be4 Qd6 f4 Rc8 c3 Nf6 a3 c5 dxc5 
                              Qxc5 
23  >  -0.69   04:11    1914M g4 Ba6 h4 gxh4 Qe3 Rc8 g5 f5 Rxh4+ Kg8 Bd3 Bxd3 
                              Qxe6+ Rf7 Rh8+ Kxh8 Rh1+ Kg8 g6 
24  >  +0.12   05:40    2599M g4 
25     +1.74   37:30   17361M g4 Kg8 Bxa8 Ba6 Bc6 Nb8 Be4 f5 gxf5 g4 fxe6 Rxf3 
                              Kb1 Bg5 Qe1 Rh3 Rg1 Rh4 d5 Qf6 Rg3 Kf8 Qg1 Qf4 f3 
                              Be2 
Nodes: 22262736391
Nodes/second: 7695042
Best move: g4
Ponder move: Kg8
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Brunetti
Posts: 424
Joined: Tue Dec 08, 2009 1:37 pm
Location: Milan, Italy
Full name: Alex Brunetti

Re: Test position: J. Polgar - Berkes

Post by Brunetti »

Marc MP wrote:[d]r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - - 0 14
Protej 0.5.8devel

Code: Select all

  Depth   Score        Time  Nodes  PV
────────────────────────────────────────────────────────────────────────────────

    1/8    0.59        0.00    281  1.Bxa8 Nc5
   2/19    0.86        0.02    945  1.Bxa8 Nf6 2.Kb1
   3/19    0.78        0.03  2.01k  1.Bxa8 f6 2.Kb1 Ne5
   4/19    0.83        0.09  5.94k  1.Bxa8 g4 2.Ne5 Nxe5 3.dxe5 Bc5
   5/19    0.86        0.22  17.6k  1.Bxa8 Ba6 2.Be4 f6 3.Kb1 Ne5
   6/19    0.89        0.27  23.6k  1.Bxa8 Ba6 2.Be4 g4 3.Ne5 Nxe5 4.dxe5 Bc4
   7/21    0.94        0.44  43.7k  1.Bxa8 Ba6 2.Be4 Bc4 3.Qe3 f6 4.Kb1 Ne5
   8/22   -1.93        1.24   143k  1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bg5 4.Qe2 Nf6
                                    5.Qe5 Nd5
   9/22   -1.98        1.78   212k  1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Nf6 4.Qe2 Qd6
                                    5.Qe3 Nd5 6.Qe5
  10/36   -0.75        4.58   569k  1.g4 Rb8 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg8
                                    5.Kb1 Bb7 6.Bxg6 fxg6 7.Ne1
  10/36   -0.75        4.59   569k  1.g4 Rb8 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg8
                                    5.Kb1 Bb7 6.Bxg6 fxg6 7.Ne1
  11/36   -0.95        7.62   936k  1.g4 Ba6 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg7
                                    5.Kb1 f5
  12/47   -0.28       14.44  1.81M  1.g4 Rb8 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg8
                                    5.Qe3 Nf6 6.gxf6 Bxf6 7.Rhh1 Bh8 8.Kb1
  13/47   -0.48       25.45  3.12M  1.g4 Rb8 2.h4 f5 3.hxg5+ Kg8 4.gxf5 Nf6
  14/48    0.24     1m35.05  12.0M  1.g4 Ba6 2.h4 gxh4 3.g5 f5 4.Rxh4+ Kg8
                                    5.Rdh1 Kf7 6.Bxf5 exf5 7.Rh7 Ke8 8.Rxg7
                                    Bxg5 9.Re1+ Qe7 10.Kb1
Alex
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User avatar
meschle
Posts: 200
Joined: Tue Apr 01, 2008 11:53 pm

Re: Test position: J. Polgar - Berkes

Post by meschle »

Brunetti wrote:
Marc MP wrote:[d]r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - - 0 14
Protej 0.5.8devel

Code: Select all

  Depth   Score        Time  Nodes  PV
────────────────────────────────────────────────────────────────────────────────

    1/8    0.59        0.00    281  1.Bxa8 Nc5
   2/19    0.86        0.02    945  1.Bxa8 Nf6 2.Kb1
   3/19    0.78        0.03  2.01k  1.Bxa8 f6 2.Kb1 Ne5
   4/19    0.83        0.09  5.94k  1.Bxa8 g4 2.Ne5 Nxe5 3.dxe5 Bc5
   5/19    0.86        0.22  17.6k  1.Bxa8 Ba6 2.Be4 f6 3.Kb1 Ne5
   6/19    0.89        0.27  23.6k  1.Bxa8 Ba6 2.Be4 g4 3.Ne5 Nxe5 4.dxe5 Bc4
   7/21    0.94        0.44  43.7k  1.Bxa8 Ba6 2.Be4 Bc4 3.Qe3 f6 4.Kb1 Ne5
   8/22   -1.93        1.24   143k  1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Bg5 4.Qe2 Nf6
                                    5.Qe5 Nd5
   9/22   -1.98        1.78   212k  1.Bxa8 g4 2.Kb1 gxf3 3.Bxf3 Nf6 4.Qe2 Qd6
                                    5.Qe3 Nd5 6.Qe5
  10/36   -0.75        4.58   569k  1.g4 Rb8 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg8
                                    5.Kb1 Bb7 6.Bxg6 fxg6 7.Ne1
  10/36   -0.75        4.59   569k  1.g4 Rb8 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg8
                                    5.Kb1 Bb7 6.Bxg6 fxg6 7.Ne1
  11/36   -0.95        7.62   936k  1.g4 Ba6 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg7
                                    5.Kb1 f5
  12/47   -0.28       14.44  1.81M  1.g4 Rb8 2.h4 gxh4 3.g5 g6 4.Rxh4+ Kg8
                                    5.Qe3 Nf6 6.gxf6 Bxf6 7.Rhh1 Bh8 8.Kb1
  13/47   -0.48       25.45  3.12M  1.g4 Rb8 2.h4 f5 3.hxg5+ Kg8 4.gxf5 Nf6
  14/48    0.24     1m35.05  12.0M  1.g4 Ba6 2.h4 gxh4 3.g5 f5 4.Rxh4+ Kg8
                                    5.Rdh1 Kf7 6.Bxf5 exf5 7.Rh7 Ke8 8.Rxg7
                                    Bxg5 9.Re1+ Qe7 10.Kb1
Alex
Good job Protej! :D
Regards Mark

Quad Q6600 3.0 Ghz, Vista 64bit, 4gb Ram
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metax
Posts: 344
Joined: Wed Sep 23, 2009 5:56 pm
Location: Germany

Re: Test position: J. Polgar - Berkes

Post by metax »

ChessMind sees that Bxa8 is bad pretty early, but it doesn't find g4 as an alternative move. :roll:

Code: Select all

r1bq1r1k/p1pnbpp1/1p2p3/6p1/3PB3/5N2/PPPQ1PPP/2KR3R w - -

Engine: ChessMind (0 MB)
von metax

6/15   0:00   +0.50    1.Lxa8 La6 2.Le4 g4 3.Se5 Lg5 128 

7/19   0:03   -1.25    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Lg5+ 
                       4.Kb1 Te8 150 

8/19   0:04   -1.34    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Ld6 (772.199) 159 

9/21   0:10   -1.17    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Lh4 4.g3 Lg5+ 
                       5.Kb1 Te8 (1.639.590) 163 

10/23  0:16   -1.13    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Kg8 5.d5 exd5 (2.678.706) 166 

11/24  0:29   -1.12    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Sd5 5.Te5 Sf4 6.Dd2 (4.737.651) 163 

12/25  0:57   -1.11    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Sd5 5.Db3 La6 6.c4 Lg5+ 7.Kb1 (9.096.833) 157 

13/28  2:08   -1.23    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Dd6 5.Kb1 Td8 6.g3 c6 7.h4 (19.939.913) 155 

14/32  3:48   -1.14    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Sd5 5.c4 Sb4 6.Db3 Ld7 7.a3 Sc6 (37.274.549) 163 

15/29  5:48   -1.10    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Ld6 5.Kb1 Ld7 6.Td2 Db8 
                       7.Tde2 Lxh2 8.Th1 (57.774.601) 165 

16/30  8:21   -1.11    1.Lxa8 g4 2.Dd3 gxf3 3.Lxf3 Sf6 
                       4.The1 Ld6 5.Kb1 Ld7 6.Td2 Db8 
                       7.Tde2 Td8 8.g3 Kg8 (84.398.844) 168
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