Author: Majd Al-Ansari
Date: 10:58:23 02/04/06
10_3 tournament 2006
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1 Rybka 1.01 Beta 10d 32-bit 53.0 - 31.056.5 - 27.551.5 - 32.5** 161.0/252
2 Fruit 2.2.1 31.0 - 53.042.5 - 38.542.0 - 38.0 ** 115.5/245
3 Fritz 9 27.5 - 56.538.5 - 42.543.5 - 35.5 ** 109.5/244
4 Shredder 9.1 UCI 32.5 - 51.538.0 - 42.035.5 - 43.5 ** 106.0/243
Hardware: Pentium 4 3.2 Ghz (2GB RAM)
Book: Fritz 9.ctg
Time: 10 minutes plus 3 sec
Games played: 504
I guess everyone on these forums must already know that Rybka is by far the
strongest engine. Therefore I will not bore anyone with mundane wins since they
are way too many in a 504 game match. Rybka simply plays stronger chess than
all other engines. It can win from inferior positions as well from standard
positions. If I were to point on one thing that makes Rybka much superior to
all others, I would have to say that it evaluates openings and pawn pushes much
more accurately than other engines. Things that we read about in the opening
such as “space advantage”, “underdeveloped”, “extra tempo”, “piece out of play”
are all somehow in Rybka’s evaluation. In some positions you can see the
theoretic advantage and somehow sacrificed material seems to get compensation,
but it is impressive to see Rybka actually show the advantage in a concrete
variation. Also Rybka’s legendary pawn pushes are well known by now. I would
think in all the top engines this will be addressed in their next version, and I
doubt that Rybka will be able to get so many wins with this weapon (maybe it
still will). Here are a few of the nice wins:
(424) Fruit 2.2.1 - Rybka 1.01 Beta 10d 32-bit [E59]
10_3 tournament Home (3.3), 19.01.2006
[0.51;0.12]
GenuineIntel 3198 MHzW=21.7 ply; 1,102kN/s; Fritz9.ctgB=10.5 ply; 61kN/s;
Fritz9.ctg 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 0–0 5.Bd3 d5 6.Nf3 c5 7.0–0 Nc6 8.a3
Bxc3 9.bxc3 dxc4 10.Bxc4 Qc7 11.Bb5 a6 12.Be2 e5 13.Bb2 e4 14.Nd2 Bf5 15.Nb3
0.51/13 28 b6 0.12/12 30 16.dxc5 (h3) 0.56/14 26 16...bxc5 -0.26/13 25
17.Nxc5 0.58/13 14 Ne5 (Qb6) -0.19/13 18 18.Nxa6 (Nb3) 0.63/13 13
[D]r4rk1/2q2ppp/N4n2/4nb2/4p3/P1P1P3/1B2BPPP/R2Q1RK1 b - - 0 18
18...Rxa6!! A very deep combination. The exchange sac takes advantage of the
fact that white's black squared bishop is cut off and black has 3 pieces and a
Queen looking at white's King. Although I could feel bad things were going to
happen to white, this deep combination is very impressive. -1.15/14 16
19.Bxa6 -0.81/13 16
[D]5rk1/2q2ppp/B4n2/4nb2/4p3/P1P1P3/1B3PPP/R2Q1RK1 b - - 0 19
Rybka goes all out, I had thought that the plan revolved around Qb6 picking off
one of the bishops and getting back material Nfg4! -2.01/14 53 20.g3
-0.80/14 24 Nf3+ (Qb6) -2.20/13 29 21.Kg2 -1.35/13 17 Qb6! Black can get
back material and could probably say he is technically winning but more drama is
in store -2.89/13 44 22.Be2
[D]5rk1/5ppp/1q6/5b2/4p1n1/P1P1PnP1/1B2BPKP/R2Q1R2 b - - 0 22
It seems that white has compensation now since if black takes bishop then white
gets the piece back with a pawn. Also white has a passed pawn that seems that
it could be adequate for compensation but ..... -1.26/13 18 22...Rd8!! Forget
the bishop ... Rybka is going for mate and with this move every single black
piece is attacking. Now it gets ugly -2.67/12 20 23.Qa4 (c4) -1.02/12 22
23...Qh6 (Qxb2) -320.00/10 4 24.h4 -#9/11 22 Nxh4+ -320.00/7 0 25.gxh4
-#8/11 21 Qxh4 -320.00/7 0 26.Bxg4 -#7/13 13 Qxg4+ -320.00/5 0 27.Kh2
(Kh1) -#6/18 10 27...Qh4+ -320.00/4 0 28.Kg1 -#5/51 11 Bh3 -320.00/3
0 29.Qxe4 (Kh2) -#4/50 14 29...Qxe4 -320.00/1 0 30.f3 -#3/49 14 Qg6+
-320.00/1 0 31.Kf2 -#2/47 9 Qg2+ -320.00/1 0 32.Ke1 -#1/4 0 Qxf1#
Mammamiya ... scary stuff. Not often you see Fruit get blasted like this.
-320.00/1 0 0–1
Here is another nice game
(485) Shredder 9.1 UCI - Rybka 1.01 Beta 10d 32-bit [D37]
10_3 tournament Home (34.1), 20.01.2006
[0.00;–0.37]
GenuineIntel 3198 MHzW=15.5 ply; 510kN/s; Fritz9.ctgB=12.7 ply; 89kN/s;
Fritz9.ctg 1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 0–0 6.e3 c5 7.dxc5 Bxc5
8.a3 Nc6 9.Qc2 Qa5 10.Rd1 Be7 11.Nd2 e5 12.Bg5 d4 13.Nb3 Qd8 14.Be2 a5 15.Na4 g6
16.exd4 Bf5 17.Qc1 Nxd4 18.Nxd4 exd4 19.0–0 Rc8 20.b3 0.00/15 45 Nd7 (b5)
-0.37/12 21 21.Bh6 -0.08/15
[D]2rq1rk1/1p1nbp1p/6pB/p4b2/N1Pp4/PP6/4BPPP/2QR1RK1 b - - 0 21
42 b5! Right out of the opening Rybka sacs the exchange ala Topalov. The
compensation is very hard to see since it seems to give white a strong passed
pawn. But nobody understands passed pawns as good as Rybka and it thinks that
the resulting position is a plus for black. I am almost positive no other
engine would play these moves, and this is why Rybka is causing fits to all its
opposition. -0.33/13 22 22.Bxf8 (g4) 0.22/16 49 22...Qxf8 -0.40/14 1:06
23.Nb2 0.09/16 49 Nc5 -0.35/13 18 24.b4 (Qf4) 0.41/15 21 24...axb4
(Nb3) -0.46/13 20 25.axb4 0.33/13 5 Nb3 -0.34/13 10 26.Qf4 0.43/15 18
Bxb4 -0.29/13 21 27.cxb5 0.11/16 1:01 Bd6 -0.43/13 18 28.Qg5 (Qf3)
0.11/16 22 28...Rc5 -0.35/12 23 29.Qh4 0.11/14 15 Rc2
[D] 5qk1/5p1p/3b2p1/1P3b2/3p3Q/1n6/1Nr1BPPP/3R1RK1 w - - 0 30
The culmination of the compensation of the exchange sac. White has to give back
material ... but what about the passed b pawn. Rybka controls it nicely.
-0.29/12 12 30.Bd3 0.06/15 12 Rxb2 0.42/14 39 31.Bxf5 0.05/16 17 gxf5
0.33/14 21 32.Rfe1 (Rb1) 0.07/16 25 32...h6 (Qg7) -0.45/11 12 33.Qf6
0.05/14 17 Bb4 0.00/12 21 34.Re5 (Rd3) 0.04/15 21 34...Nc5 -0.29/11 16
35.Qxf5 0.07/15 16 Ne6 (d3) -0.19/11 10
[D] 5qk1/5p2/4n2p/1P2RQ2/1b1p4/8/1r3PPP/3R2K1 w - - 0 36
Rybka has now created its own passed center pawn. Whoever manages to push his
pawn should win.
36.Re4 (Re2) 0.07/13 9 36...Qc5 (Bc5) -0.93/11 27 37.Re5 (Rg4+) -0.29/12
18 37...Qc2 -1.43/12 10 38.Qxc2 -1.87/14 23 Rxc2 -1.57/13 9 39.f4
(Kf1) -1.56/14 20 39...Bd6 (Nxf4) -2.10/13 11 40.Rd5 -1.88/16 13 Bxf4
-2.07/15 13 41.Rb1 -2.02/15 5 Nc5 -2.05/14 9 42.b6 -1.98/16 12 Be3+
(d3) -2.06/14 9 43.Kh1 -1.84/14 2 d3 -1.90/14 8 44.b7 -1.81/16 11
Nxb7 -1.91/15 15 45.Rxd3 -1.81/18 15 Bg5 (Re2) -1.95/15 14 46.g3 (Rf1)
-1.80/16 14 46...Nc5 -2.23/12 2 47.Rf3 -1.87/16 12 Ne4 -2.28/13 8
48.Rbf1 (Re1) -1.87/15 14 48...f6 -2.45/14 12 49.h4 (Re1) -1.93/15 8
49...Bd2 -2.36/13 7 50.Ra1 (Rg1) -2.10/15 16 50...Bb4 (h5) -2.71/12 8
51.Ra4 -2.16/14 9 Rb2 -2.70/12 3 52.h5 (Ra8+) -2.06/15 9 52...Kf7
-2.87/13 12 53.Ra7+ -2.07/15 6 Ke6 -2.82/14 11 54.Rb7 -1.94/15 9 Kd5
(Bc3) -2.79/13 13 55.Rb8 -1.94/15 10 Kd6 -2.76/13 17 56.g4 (Re8)
-1.91/15 9 56...Kd5 -2.77/12 15 57.Rb7 (Rb6) -1.92/14 5 57...Kc4 (Bc3)
-2.64/11 10 58.Rh7 (Rb8) -1.99/13 4 58...Nf2+ (Bf8) -2.82/11 9 59.Rxf2
(Kg1) -1.56/18 17 59...Rxf2 -2.92/12 2 60.Rxh6 -1.56/17 5 Kd3 (Bc3)
-3.05/12 6 61.Rg6 -1.01/12 1 Bc3 -3.96/14 7 62.h6 -1.65/16 9 Ke4
-3.96/15 5 63.g5 -2.90/17 11 f5 -3.96/14 6 64.Kg1 (Rd6) -2.63/15 3
64...Rd2 (Rf4) -5.36/13 6 65.Rc6 -5.64/15 12 Bd4+ -7.50/14 5 66.Kf1
-5.64/15 4 f4 -8.36/14 7 67.Re6+ (Ke1) -7.35/14 9 67...Kf3 (Kd3)
-320.00/10 0 68.h7 -#12/19 12 Be3 -320.00/9 0 69.Rxe3+ (Ke1) -#11/18 0
69...fxe3 -320.00/7 0 70.Ke1 -#7/15 3 Rd8 -320.00/5 0 71.h8Q -#6/15
3 Rxh8 -320.00/4 0 72.Kd1 -#5/14 2 Rc8 -320.00/3 0 73.g6 -#4/14 2
Kf2 -320.00/1 0 74.g7 -#3/10 0 e2+ -320.00/1 0 75.Kd2 -#2/10 0 e1Q+
-320.00/1 0 76.Kd3 -#1/9 1 Qe3# A very nice game showing why Rybka is so
difficult for the opposition to play against. -320.00/1 0 0–1
Another strong display by Rybka in this game
(496) Fruit 2.2.1 - Rybka 1.01 Beta 10d 32-bit [B33]
10_3 tournament Home (39.3), 20.01.2006
[–0.42;0.09]
GenuineIntel 3198 MHzW=22.0 ply; 1,026kN/s; Fritz9.ctgB=10.0 ply; 55kN/s;
Fritz9.ctg 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nf6 6.Ndb5 d6 7.Bf4 e5
8.Bg5 a6 9.Na3 b5 10.Nd5 Be7 11.Bxf6 Bxf6 12.c3 0–0 13.Nc2 Bg5 14.a4 bxa4
15.Rxa4 a5 16.Bc4 Rb8 17.Ra2 Kh8 18.Nce3 g6 19.0–0 f5 20.Qa4 Bd7 21.Qa3 Be6
22.exf5 gxf5 23.Rd1 -0.42/13 28 The end of book moves and right off the bat
Rybka plays strong
[D] 1r1q1r1k/7p/2npb3/p2Nppb1/2B5/Q1P1N3/RP3PPP/3R2K1 b - - 0 23
f4! This is the type of setup that Rybka excels in. All blacks pieces are
aimed at the white King. White has some pieces that seem temporarily out of
play. It is amazing at how brutally Rybka takes advantage of this seemingly
harmless weakness. 0.09/11 19 24.Nf1 -0.38/13 24 f3! (Rg8) 0.00/12 1:06
25.g3 -0.03/13 23 Qd7 White squares have been weakened and Rybka jumps at the
opportunity to take advantage of it. 0.31/12 1:29
[D] 1r3r1k/3q3p/2npb3/p2Np1b1/2B5/Q1P2pP1/RP3P1P/3R1NK1 w - - 0 26
26.Nde3 (Qa4) -0.02/13 15 26...Bxc4! Rybka takes away the defenders of the
weakened white squares around the King. 0.00/12 16 27.Nxc4 -0.02/11 6 d5
(Qh3) 0.14/11 17 28.Qc5 -0.32/13 23
[D] 1r3r1k/3q3p/2n5/p1Qpp1b1/2N5/2P2pP1/RP3P1P/3R1NK1 b - - 0 28
Qh3! (Rfd8) -0.38/12 26 29.Nce3 0.37/13 19 Bxe3! Rybka follows its plan
-3.96/13 1:01 30.Nxe3 -1.24/15 1:00
[D] 1r3r1k/7p/2n5/p1Q1p3/3p4/2P1NpPq/RP3P1P/3R2K1 w - - 0 31
d4! Rybka makes chess seem like such a simple game The Knight is hanging but it
is poison -4.02/12 6 31.cxd4 -1.24/15 22
[D] 1r3r1k/7p/2n5/p1Q1p3/3P4/4NpPq/RP3P1P/3R2K1 b - - 0 31
Rf6!! A killer in between move that destroys all possible resistance. -7.81/11
16 32.Qd5 -4.46/13 32 Rbf8 -8.01/13 17 33.Qc5 (Qd7) -4.46/12 20
33...Rd8 (Re8) -320.00/2 0 34.Qd5 (g4) -#6/14 11 34...Rxd5 -320.00/2 0
35.Rxa5 (b4) -#5/50 10 35...Rh6 (Rxa5) -320.00/2 0 36.Ra8+ -#4/49 12
Rd8 -320.00/1 0 37.Rxd8+ -#3/48 12 Nxd8 -320.00/1 0 38.dxe5 -#2/48 12
Qxh2+ -320.00/1 0 39.Kf1 -#1/4 0 Qh1# OUCH !!! -320.00/1 0 0–1
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