Author: Majd Al-Ansari
Date: 14:21:15 01/07/06
Tourney 5_3 128mb hash (418 games)
Hardware PIV 3.2Ghz 2GB RAM
GUI Fritz 9.ctg / Ponder OFF
1 2 3 4
1 Rybka 1.01 Preview 2 32-bit 44.0 - 26.038.0 - 32.038.0 - 31.0** 120.0/209
2 Fritz 9 26.0 - 44.039.0 - 30.036.0 -
34.0 ** 101.0/209
3 Shredder 9.1 UCI 32.0 - 38.030.0 - 39.036.5 - 33.5 **
98.5/209 -5918.75
4 Fruit 2.2.1 31.0 - 38.034.0 - 36.033.5 - 36.5 **
98.5/209 -5930.25
The Good: Great wins by Rybka
In looking at Rybka’s wins I have to think that the most lethal weapon in
Rybka’s arsenal is how dangerous it is with evaluating pawn pushes … especially
during the middle game.
(11) Fruit 2.2.1 - Rybka 1.01 Preview 2 32-bit [D45]
tourney 1 Home (22.3), 28.12.2005
[–0.28;–0.35]
GenuineIntel 3198 MHz W=13.2 ply; 551kN/s; Fritz9.ctg B=12.3 ply; 142kN/s;
Fritz9.ctg 1.d4 0 1...Nf6 0 2.c4 0 2...e6 0 3.Nf3 0 3...d5 0 4.Nc3 0 4...c6 0
5.e3 0 5...Nbd7 0 6.Qc2 0 6...Bd6 0 7.g4 0 7...dxc4 0 8.Bxc4 0 8...e5 0 9.g5 0
9...Nd5 0 10.Bd2 0 10...exd4 0 11.Nxd4 0 11...0–0 0 12.Nxd5 0 12...cxd5 0 13.Bd3
0 13...g6 0 14.h4 0 14...Nc5 0 15.Rc1 –0.28/11 10 15...Re8 (Bd7) –0.35/11 11
16.Nb5 (Bb5) –0.39/12 16 16...Nxd3+ –0.67/12 9 17.Qxd3 –0.49/12 5 17...Bf5
–0.67/13 13 18.Qe2 –0.40/13 12 18...Be5 –0.81/12 11 19.Bc3 –0.48/13 11 19...Rc8
(Bf4) –0.67/12 11 20.Rd1 (0–0) –0.64/11 16 20...a6 (Bf4) –0.57/10 11 21.Bxe5
(Nd4) –0.25/13 ...
2rqr1k1/1p3p1p/p5p1/1N1pBbP1/7P/4P3/PP2QP2/3RK2R b K - 0 21
15 21...axb5 It is these kind of moves that must drive the other engines crazy.
It is also these kind of moves that make me think that Rybka can beat hardware
monsters such as Hydra. They just will not calculate the consequences of this
move because it seems weak. With this capture Rybka has already eyed a couple of
pawn moves which will give it a strong initiative. This type of pawn play is a
weapon that all other engines just don't seem to have any protection against.
–0.73/11 7 22.Bc3 –0.21/12 9 22...b4! (Rc4) –1.05/12 7 23.Bxb4 (Bd4) –0.52/13 11
23...d4! –1.14/12 14 24.Bc3 (Qb5) –0.59/13 15 24...d3! –1.25/11 7 25.Qf1
–0.57/12 10 25...Qd5 –1.53/11 10 26.h5 –0.67/12 .... Rybka has played some very
forceful pawn pushes and will now capitalizes.
2r1r1k1/1p3p1p/6p1/3q1bPP/8/2BpP3/PP3P2/3RKQ1R b K - 0 26
13 26...Rxc3! (gxh5) -2.89/11 6 27.bxc3 -2.55/12 18 27...Qc4 -4.03/12 21 28.Qg2
-2.72/13 9 28...Qxc3+ -4.81/12 8 29.Kf1 -3.02/14 12 29...Qc2 -5.17/12 8 30.Ra1
-3.26/13 11 30...Qb2 (d2) -5.17/12 12 31.Re1 -4.09/13 9 31...d2 -5.03/12 12
32.Rd1 -4.14/13 8 32...Qc2 -5.50/12 9 33.Qf3 -4.20/13 9 33...Be4 -5.76/12 5
34.Qg4 -4.84/13 9 34...Bxh1 -5.65/11 4 35.hxg6 -4.97/13 8 35...Re4 (hxg6)
-6.30/12 18 36.gxf7+ –0.70/10 7 36...Kf8 (Kxf7) -7.43/12 9 37.Qe2 -7.09/13 18
37...Rh4 -7.49/12 4 38.Qxd2 (Rxd2) -7.28/13 5 38...Qxd2 -7.49/11 4 39.Rxd2
-8.64/16 9 39...Bf3 What a devastating display. I think any Super GM would be
proud of this game. I really think in some games Rybka is just playing a type of
chess other engines do not understand. -8.41/144 0–1
(1) Fritz 9 - Rybka 1.01 Preview 2 32-bit [D46]
tourney 1 Home (3.1), 27.12.2005
[–0.72;–0.65]
GenuineIntel 3198 MHz W=13.1 ply; 1,102kN/s; Fritz9.ctg B=12.8 ply; 128kN/s;
Fritz9.ctg 1.d4 0 1...Nf6 0 2.c4 0 2...e6 0 3.Nf3 0 3...d5 0 4.Nc3 0 4...c6 0
5.e3 0 5...Nbd7 0 6.Qc2 0 6...Bd6 0 7.Bd3 0 7...0–0 0 8.0–0 0 8...dxc4 0 9.Bxc4
0 9...a6 0 10.Rd1 0 10...b5 0 11.Be2 0 11...Qc7 0 12.e4 0 12...e5 0 13.g3 0
13...Re8 0 14.a3 0 14...exd4 0 15.Nxd4 0 15...Be5 0 16.Bf3 0 16...c5 0 17.Nde2 0
17...Bb7 0 18.Be3 0 18...c4 0 19.b4?!
r3r1k1/1bqn1ppp/p4n2/1p2b3/1Pp1P3/P1N1BBP1/2Q1NP1P/R2R2K1 b - b3 0 19
This is definetely not the best way to play Rybka. This gives Rybka a passed
pawn as well as the bishop pair. The way Rybka plays this passed pawn in the
middle game is truly instructive. White usually plays Bg2 which gives white many
more options.
–0. 72/10 13 19...cxb3 –0.65/12 8 20.Qxb3 –0.75/12 20 20...Nc5 (Nb6) –0.59/12
13 21.Bxc5 –0.77/12 22 21...Qxc5 –0.48/12 8 22.Rac1 –0.83/12 21 22...Qe7
–0.47/12 11 23.a4 (Nd5) –0.70/12 20 23...b4 –0.70/10 3 24.Nd5 –0.61/14 24
24...Nxd5 –0.88/11 2 25.exd5 –0.61/13 12 25...Rac8 (Qf6) –0.88/12 12 26.Rxc8
(a5) –0.51/13 14 26...Bxc8 –0.84/13 15 27.Nd4 –0.60/13 20 27...Qc5 (Bd6)
–0.88/13 12 28.Nc6 –0.37/13 9 28...Bd6 –0.96/13 16 29.Qb1 –0.55/14 21 29...Qc3
–1.19/12 8 30.Be4 (Kg2) –0.69/13 10 30...g6 –1.37/12 13 31.a5 (Rc1) –0.75/12 10
31...b3 -2.18/10 3 32.Rc1 –0.89/13 19 32...Qd2 (Qf6) -2.04/12 7 33.Rd1 –0.65/13
10 33...Qa2 -3.00/12 13 34.f3?
2b1r1k1/5p1p/p1Nb2p1/P2P4/4B3/1p3PP1/q6P/1Q1R2K1 b - - 0 34
White tries to free the Queen from protecting the bishop but now the black
bishop gets in the action with tempo.
–1.25/10 8 34...Bc5+ -5.84/13 7 35.Kh1 -4.47/12 7 35...Rxe4! This rook sac
renders white totally helpless. -5.90/14 12 36.Qxe4 -6.98/12 7 36...Bh3 -5.90/13
4 37.Qe8+ -7.75/13 9 37...Bf8 -6.64/14 17 38.Rg1 -7.89/15 11 38...b2
A devastating display of just how dangerous a passed pawn can be in the middle
game. -6.70/13 5 0–1
(10) Shredder 9.1 UCI - Rybka 1.01 Preview 2 32-bit [D46]
tourney 1 Home (19.2), 28.12.2005
[0.14;0.13]
GenuineIntel 3198 MHz W=16.2 ply; 471kN/s; Fritz9.ctg B=13.4 ply; 155kN/s;
Fritz9.ctg 1.d4 0 1...Nf6 0 2.c4 0 2...e6 0 3.Nf3 0 3...d5 0 4.Nc3 0 4...c6 0
5.e3 0 5...Nbd7 0 6.Qc2 0 6...Bd6 0 7.Bd3 0 7...0–0 0 8.0–0 0 8...dxc4 0 9.Bxc4
0 9...Qe7 0 10.Bd2 0 10...a6 0 11.a4 0 11...c5 0 12.Rae1 0 12...b6 0 13.d5 0
13...Ne5 0 14.Nxe5 0 14...Bxe5 0 15.e4 0 15...exd5 0 16.Nxd5 0 16...Nxd5 0
17.Bxd5 0 17...Bb7 0 18.Bc3 0.14/14 19 18...Bxc3 (Bf4) 0.13/13 13 19.bxc3
–0.01/15 31 19...b5 0.12/13 53 20.axb5 (Re3) –0.05/14 45 20...axb5
r4rk1/1b2qppp/8/1ppB4/4P3/2P5/2Q2PPP/4RRK1 w - - 0 21
Here again we see Rybka in its element. A passed pawn in the middle game. It is
very instructive to see how Rybka plays this. –0.01/10 2 21.Rb1 (Re3) –0.05/15
21 21...Rfd8 (Bxd5) 0.02/11 8 22.Rfd1 (Rfe1) 0.02/14 22 22...Bxd5 0.09/11 11
23.exd5 0.19/15 11 23...Rd6 (Qe5) 0.10/11 11 24.Qd3 (Qb3) 0.38/14 10 24...Qd7
0.16/12 9 25.c4 0.37/15 14 25...b4 0.10/12 6 26.Qe3 0.42/14 5 26...Ra5 (Rg6)
0.19/12 8 27.Ra1 (Re1) 1.20/16 23 27...Rda6 0.39/11 3 28.Qe5 (Rxa5) 1.17/15 11
28...f6 (h6) 0.09/13 7 29.Qb8+ 2.00/13 3 29...Kf7 0.18/13 6 30.Rxa5 1.63/15 11
30...Rxa5 0.06/13 6 31.Qb6 (Re1)
8/3q1kpp/1Q3p2/r1pP4/1pP5/8/5PPP/3R2K1 b - - 0 31
1.53/16 14 31...Ra2! Rybka already evaluates that it is winning due to the push
of the b pawn. In the meantime Shredder thinks it is winning. 0.00/139 32.Qxc5
(h3) 1.59/15 12 32...b3 0.03/12 7 33.Qd4 (d6) 1.35/14 32 33...Qa7! (Rc2)
–1.67/13 8 34.Qxa7+ (c5) –1.34/13 33 34...Rxa7 -8.84/15 11 35.d6 -2.76/19 16
35...Ke8 (Ke6) -9.23/14 5 36.d7+ (Re1+) –10.05/19 18 36...Kd8 –10.19/16 19 37.c5
–10.21/20 7 37...b2 –11.04/15 18 38.c6 –10.31/19 5 38...Rc7 Another great game
by Rybka showing its strength with pawn pushes in the middle game. –11.10/16 13
0–1
(6) Rybka 1.01 Preview 2 32-bit - Shredder 9.1 UCI [E11]
tourney 1 Home (8.2), 27.12.2005
[0.05;0.19]
GenuineIntel 3198 MHz W=15.2 ply; 136kN/s; Fritz9.ctg B=14.7 ply; 448kN/s;
Fritz9.ctg 1.d4 0 1...Nf6 0 2.c4 0 2...e6 0 3.Nf3 0 3...Bb4+ 0 4.Nbd2 0 4...b6 0
5.a3 0 5...Bxd2+ 0 6.Bxd2 0 6...Bb7 0 7.Bg5 0 7...h6 0 8.Bh4 0 8...d6 0 9.e3 0
9...Nbd7 0 10.Bd3 0 10...Qe7 0 11.Qc2 0 11...g5 0 12.Bg3 0 12...h5 0 13.h3
0.05/11 8 13...0–0–0 (h4) 0.19/14 29 14.Nxg5 (Rg1) 0.15/12 15 14...h4 0.22/14 16
15.Bh2 0.26/12 13 15...e5 0.30/14 19 16.c5 (dxe5) 0.11/11 7 16...dxc5 0.26/14 24
17.dxe5 0.19/11 8 17...Ng4 (Nh5) 0.64/14 21 18.hxg4 0.68/11 7 18...Qxg5 1.44/14
27 19.Bf5 (0–0–0) 0.63/11 10 19...h3 (Qe7) 0.28/15 43 20.Bf4 (Bg1) 0.67/12 12
20...hxg2 0.04/16 50 21.Rg1 –0.92/13 28 21...Qe7 –0.06/15 7 22.0–0–0 –0.78/12 7
22...Bf3 –0.06/14 6 23.Rde1 –0.73/11 5 23...Kb8 (Rh3) –0.32/13 10 24.Be4
–0.92/12 7 24...Bxe4 –0.83/14 13 25.Qxe4 –0.92/12 3 25...c4 –0.91/15 14 26.Qxc4
–0.95/12 6 26...Nc5 –0.91/15 15 27.Kc2 –1.34/12 15 27...Nd3 (Qd7) –0.76/14 24
28.Rb1 –1.52/12 28 28...Nxe5 –0.75/12 6 29.Qe4 –1.53/11 4 29...Qc5+ –1.50/12 9
30.Kb3 -2.41/12 27 30...Rhe8 –1.26/12 5 31.Ka2 -2.15/11 6 31...Nd3 –1.47/11 2
32.Qa4 (Qxg2) -2.31/10 5 32...Re7 (Rh8) –1.54/11 4 33.Rbd1 (Ka1) –1.56/8 1
33...Red7 (Qd5+) –0.86/12 11 34.Kb1 –1.84/10 4 34...b5 (Nxb2) –1.27/11 3 35.Qc2
(Qe4) -2.07/11 6 35...Qxc2+ -2.15/13 5 36.Kxc2 -2.14/13 1 36...Nb4+ -2.29/15 3
37.axb4 -2.20/14 1 37...Rxd1 -2.78/19 11 38.Rxg2 -2.54/13 2 38...R8d2+ (R1d2+)
-2.79/16 3 39.Kc3 -2.70/15 6 39...Rd3+ -2.74/16 3 40.Kc2 -2.27/2 0 40...R3d2+
(R1d2+) -2.79/16 5 41.Kc3 0.00/22 1 41...Kb7 (Rd3+) -2.78/15 2 42.Rh2 (Be5)
-2.02/12 5 42...Rd3+ -3.03/14 3 43.Kc2 –1.74/2 0 43...a5
8/1kp2p2/8/pp6/1P3BP1/3rP3/1PK2P1R/3r4 w - a6 0 44
White looks totally lost here. It is interesting to see how Rybka plays and
saves this game. -3.09/14 3 44.e4 -2.11/14 4 44...axb4 -3.10/14 3 45.b3 -2.09/13
2 45...Rd7 -3.01/14 3 46.Be3 –1.95/13 7 46...R1d3 (Re1) -3.02/14 3 47.Rh5 (Kb2)
-2.30/13 5 47...c6 (Rc3+) -2.89/15 4 48.Kb2 (g5) –1.99/13 5 48...Kc8 (Rd1)
-2.68/14 5 49.e5 -2.08/12 13 49...Kc7 (Rc3) -2.39/14 9 50.Rf5 (Rh6) -2.23/12 6
50...Rc3 -2.46/15 4 51.Rf6 (g5) -2.27/13 4 51...c5 -2.79/15 5 52.g5 -2.69/13 16
52...c4 -2.95/14 4 53.bxc4 -2.69/12 1 53...bxc4 -3.08/14 1 54.Bf4 (e6) -2.03/12
5 54...Kb7 (Kd8) -3.02/12 3 55.Be3 (e6) –1.98/13 8 55...Kc7 (Rdd3) -3.01/13 3
56.Bf4 0.00/15 1 56...Kc8?
2k5/3r1p2/5R2/4P1P1/1pp2B2/2r5/1K3P2/8 w - - 0 57
Shredder underestimates whites pawn sac and thus gives up the win. -2.68/13 3
57.g6! (e6) –0.42/13 4 57...fxg6 –1.28/14 6 58.e6! 0.00/14 4 58...Rd8 (Rb3+)
–0.03/13 3 59.Rf7 0.00/14 4 59...Rcd3 (Rf3) –0.02/13 2 60.Rc7+ 0.00/11 1
60...Kb8 –0.02/10 0 61.Rf7+ 0.00/14 6 61...Ka8 –0.01/14 1 62.e7 0.00/15 2
62...Rb3+ –0.01/15 2 63.Kc2 (Kc1) 0.00/21 5 63...Rc3+ 0.00/17 2 64.Kb2 0.00/22 3
64...Rb3+ 0.00/18 3 65.Kc2 0.00/69 0 65...Rc3+ 0.00/18 2 66.Kb2 0.00/69 0
66...Rb3+ A good save by Rybka showing that it can play some endings very well.
0.00/19 2 ½–½
(13) Shredder 9.1 UCI - Rybka 1.01 Preview 2 32-bit [C99]
tourney 1 Home (29.2), 28.12.2005
[0.01;0.08]
GenuineIntel 3198 MHz W=14.3 ply; 433kN/s; Fritz9.ctg B=12.1 ply; 131kN/s;
Fritz9.ctg 1.e4 0 1...e5 0 2.Nf3 0 2...Nc6 0 3.Bb5 0 3...a6 0 4.Ba4 0 4...Nf6 0
5.0–0 0 5...Be7 0 6.Re1 0 6...b5 0 7.Bb3 0 7...d6 0 8.c3 0 8...0–0 0 9.h3 0
9...Na5 0 10.Bc2 0 10...c5 0 11.d4 0 11...Qc7 0 12.Nbd2 0 12...cxd4 0 13.cxd4 0
13...Nc6 0 14.Nb3 0 14...a5 0 15.Be3 0 15...a4 0 16.Nbd2 0 16...Bd7 0 17.Rc1 0
17...Qb7 0 18.Qe2 0 18...Rfe8 0 19.Bd3 0 19...Rab8 0 20.dxe5 0 20...dxe5 0 21.a3
0 21...Be6 0.08/11 11 22.Red1 (Rc2) 0.01/13 25 22...Rec8 0.08/11 9 23.Ng5
0.00/14 45 23...Bd7 0.17/12 17 24.Nf1 (b4) 0.02/12 19 24...g6 (Na5) 0.05/11 14
25.Nf3 0.22/13 17 25...Be6 0.03/12 17 26.Ng3 0.15/13 17 26...Ne8 (Bb3) –0.06/11
23 27.Nf1 0.11/12 11 27...Nd6 (Bb3) –0.02/11 12 28.Bc5 (N1d2) –0.03/13 15
28...Na5 –0.01/11 7 29.Bxd6 (N1d2) 0.00/14 15 29...Rxc1 0.16/13 10 30.Bxb8
–0.12/15 15 30...Rxd1 0.04/14 11 31.Qxd1 –0.06/16 10 31...Qxb8 –0.17/13 6 32.Ne3
–0.06/16 22 32...Nb3 (f6) –0.17/12 7 33.Bf1 (Nd5) 0.04/14 14 33...Nc5 (Bc5)
–0.01/11 8 34.Nd5 0.32/14 9 34...Bd8 0.14/13 9 35.Qc2 0.42/15 13 35...Qd6 (Bxd5)
0.16/13 7 36.Bxb5 (Nc3) 0.89/14 5 36...Bxd5 0.01/13 7 37.exd5 0.81/15 5
37...Qxd5 (e4) 0.07/13 7 38.Bxa4 0.64/16 30 38...e4 0.00/13 8 39.Nh2 0.66/15 9
39...h5 (Qd4) 0.00/12 6 40.Nf1 1.04/14 8 40...Nd3 0.00/12 7 41.Ne3 1.00/14 11
41...Qd4 (Qe5) 0.00/12 8 42.Nd1 (Qc8) 0.94/14 18 42...Bb6 0.23/10 10 43.Kf1
(Bb3) 0.97/13 6 43...Qe5 0.17/10 6 44.Bc6 (Qc6) 0.84/12 6 44...Kg7 (h4) 0.00/9 7
45.a4 0.56/13 18 45...f5 (Bd4) 0.15/10 6 46.Bb5 1.11/14 6 46...Ba5 0.31/11 5
47.Kg1
8/6k1/6p1/bB2qp1p/P3p3/3n3P/1PQ2PP1/3N2K1 b - - 0 47
White looks very solid here with two connected passed pawns. You could even say
white is winning. Well Rybka has other plans and shows some really impressive
middle game play with its by now legendary forceful pawn play. 1.07/ 14 6
47...Qd4 0.13/11 2 48.Qc4 0.97/14 11 48...Qe5 (Qxc4) 0.19/11 4 49.Qb3 1.07/13 5
49...Nc5 0.08/11 8 50.Qc2 1.06/13 2 50...Qd4 0.23/11 5 51.Bc4 (g3) 1.07/13 3
51...f4! Here come the pawns. 0.19/12 9 52.b3 1.01/13 4 52...Kh6 (Kf6) 0.24/12 4
53.h4 1.11/14 4 .....
8/6k1/6p1/bB2qp1p/P3p3/3n3P/1PQ2PP1/3N2K1 b - - 0 47
53...Bd8! Here Rybka sees the passers are on the a and b file are too slow and
moves the bishop from defense to attack. I think no engine again will play this
move because the other engines will not calculate the pawn pushes that Rybka is
looking at. 0.00/12 8 54.Qc1 (b4) 1.04/12 4 54...Kh7 0.00/12 5 55.Kh2 (Bf1)
0.90/12 5 55...Qd6 (Nd7) –0.23/11 7 56.Kg1 0.99/12 5 56...Bxh4 (Qd4) –0.59/11 5
57.Nc3 (Qc2) 1.11/13 7 57...e3! (Bf6) –0.94/11 5 58.fxe3 (f3) –0.28/15 17
58...f3!
8/7k/3q2p1/2n4p/P1B4b/1PN1Pp2/6P1/2Q3K1 w - - 0 59
Well Shredder still thinks there is nothing to worry about and thinks it is
doing just fine. Rybka on the other hand sees this as game over. –1.59/11 5
59.Qd1 –0.28/13 3 59...f2+ (Qg3) –1.80/12 6 60.Kh1 0.04/15 5 60...Qf6! (Qe5)
–1.95/12 4 61.Nd5 –0.77/13 5 61...Qb2 (Qe5) -2.50/11 14 62.Kh2 –0.19/12 9
62...Ne4 -4.55/11 13 63.Kh3 –1.58/12 4 63...Kh6! (Qe5) -4.89/10 3 64.Nf4
-4.78/13 7 64...Qc3 -8.38/11 4 65.Qd4 -4.75/14 3 65...Ng5+ -9.23/12 7 66.Kxh4
(Kh2) –10.62/15 5 66...f1Q –12.14/12 8 67.Qh8+ –14.44/14 13 67...Qxh8 –13.08/14
6 68.Bxf1 –14.07/15 5 68...Qe5 Another great game from Rybka. Obviously Shredder
could have defended much better, but the strength in Rybka is that it sees moves
that other engines are not even calculating. This makes them react too slowly to
danger. –13.02/11 4 0–1
(17) Fritz 9 - Rybka 1.01 Preview 2 32-bit [D48]
tourney 1 Home (41.1), 29.12.2005
[0.00;0.00]
GenuineIntel 3198 MHz W=13.6 ply; 1,256kN/s; Fritz9.ctg B=14.6 ply; 175kN/s;
Fritz9.ctg 1.d4 0 1...d5 0 2.c4 0 2...c6 0 3.Nf3 0 3...Nf6 0 4.Nc3 0 4...e6 0
5.e3 0 5...Nbd7 0 6.Bd3 0 6...dxc4 0 7.Bxc4 0 7...b5 0 8.Bd3 0 8...Bb7 0 9.0–0 0
9...a6 0 10.e4 0 10...c5 0 11.d5 0 11...Qc7 0 12.dxe6 0 12...fxe6 0 13.Bc2 0
13...c4 0 14.Ng5 0 14...Nc5 0 15.e5 0 15...Qxe5 0 16.Re1 0 16...Qd6 0 17.Qxd6 0
17...Bxd6 0 18.Be3 0 18...0–0 0 19.Rad1 0 19...Be7 0 20.Bxc5 0 20...Bxc5 0
21.Nxe6 0 21...Rfc8 0 22.h3 0 22...Rab8 0 23.Nxc5 0 23...Rxc5 0 24.Rd6 0 24...b4
0 25.Na4 0 25...Rd5 0 26.Rb6 0 26...a5 0 27.Re7 0 27...Nd7 0 28.Rbe6 0 28...Nf8
0 29.Rb6
1r3nk1/1b2R1pp/1R6/p2r4/Npp5/7P/PPB2PP1/6K1 b - - 0 29
This is the last book move by Fritz in its own book. Looking at the Queenside
and seeing the future passed pawn looks like it could be very dangerous against
Rybka. Obviously Fritz has had good success with this, but I don't think this
book was made when Rybka was around. I expect many changes in this book to avoid
such positions. 0.00/13 17 29...Nd7 0.00/16 14 30.Rbe6 0.00/14 14 30...Rd2
–0.26/11 8 31.Bf5 (f3) –0.52/12 16 31...Rf8 –0.42/12 9 32.Be4 (g4) –0.89/12 15
32...Bxe4 –0.68/13 11 33.Rxe4 –0.78/13 20 33...Rc8 –1.15/13 11 34.Re2 (Re3)
–0.85/12 22 34...Rxe2 –1.25/15 7 35.Rxe2 –1.05/14 16 35...Nf6 –1.01/15 11 36.Rc2
–1.23/14 21 36...Nd5 –1.04/16 9 37.g3 –1.14/12 11 37...c3! Rybka's patented pawn
push –0.93/15 14 38.Kg2 –1.19/14 24 38...Rf8 (Rc4) –0.99/14 25 39.Nc5 (h4)
–0.66/12 12 39...Kf7 (h6) –1.10/13 7 40.bxc3 –0.70/12 11 40...bxc3 –0.98/13 10
41.Kf3 (a3) –0.73/13 19 41...Rc8 –1.13/13 8 42.Ne4 (Nb7) –1.09/14 14 42...Ke6
–1.56/14 6 43.Ke2 –0.96/13 9 43...Ke5 –1.45/14 3 44.f3 –1.09/13 11 44...Kd4 (a4)
–1.45/14 9 45.Rc1 –1.32/13 11 45...Rc6 –1.78/14 20 46.Rd1+ –1.48/13 19 46...Kc4
-2.19/14 15 47.Rb1 ....
8/6pp/2r5/p2n4/2k1N3/2p2PPP/P3K3/1R6 b - - 0 47
13 47...Nb4! Although I am not convinced that Rook to f8 was the best plan it
seems that Fritz 9 was not able to do anything about it and the freeing of the
white Knight seems to not useful at all. Now it looks like the passed pawns will
have some devastating consequences. -3.19/13 5 48.a3 -2.35/13 13 48...Nc2
-3.43/13 5 49.Rc1 -2.64/13 14 49...Nd4+ -3.64/12 3 50.Ke3 -2.86/13 8 50...c2
-3.72/12 4 51.a4 -3.29/12 8 51...Rb6 (h6) -3.86/13 4 52.Kd2 -3.88/12 9 52...Rb2
(Kb3) -4.48/13 8 53.Nd6+ -3.76/12 5 53...Kb4 (Kb3) -4.46/15 5 54.Kd3 -3.85/14 8
54...Rb1 -4.73/16 9 55.Rxc2 -4.18/14 7 55...Nxc2 -4.73/16 3 56.Kxc2 -4.39/15 6
56...Rb3 -4.86/15 5 57.Kd2 (g4) -4.67/14 5 57...Rxf3 -5.10/13 2 58.Ne4 (Nb5)
-5.04/15 7 58...Kxa4 -5.36/14 2 59.Ng5 -5.78/14 12 59...Rf5 -6.16/15 9 60.Nxh7
(Ne6) -5.17/13 7 60...Kb4 –10.98/16 5 61.g4 (Ke3) -7.84/12 7 61...Rd5+ –11.86/16
6 62.Ke3 -9.36/12 4 62...a4 –14.14/16 23 63.h4 (Ke4) -9.85/11 5 63...a3 Another
impressive game with instructive pawn pushes. –14.15/12 11 0–1
In this game Rybka plays some moves that seem totally against all the principles
of chess structure. Yet it convincingly manages to win.
(5) Shredder 9.1 UCI - Rybka 1.01 Preview 2 32-bit [B49]
tourney 1 Home (7.2), 27.12.2005
[0.05;0.30]
GenuineIntel 3198 MHz W=17.0 ply; 495kN/s; Fritz9.ctg B=14.2 ply; 141kN/s;
Fritz9.ctg 1.e4 0 1...c5 0 2.Nf3 0 2...Nc6 0 3.d4 0 3...cxd4 0 4.Nxd4 0 4...e6 0
5.Nc3 0 5...a6 0 6.Be2 0 6...Qc7 0 7.f4 0 7...b5 0 8.Nxc6 0 8...Qxc6 0 9.Bf3 0
9...Bb7 0 10.Be3 0 10...Rc8 0 11.a3 0 11...Qc7 0 12.Qd4 0 12...Ne7 0 13.0–0–0 0
13...Nc6 0 14.Qb6 0 14...Qxb6 0 15.Bxb6 0 15...d6 0 16.a4 0 16...b4 0 17.Nb1 0
17...g5 0.30/12 13 18.fxg5 0.05/16 26 18...Be7 (Ne5) 0.31/13 16 19.h4 (Be3)
0.65/15 21 19...Ne5 (0–0) 0.45/12 11 20.Bd4 (Nd2) 0.64/14 11 20...h6!
2r1k2r/1b2bp2/p2pp2p/4n1P1/Pp1BP2P/5B2/1PP3P1/1NKR3R w k - 0 21
Rybka evaluates that doubling of the pawns in this position is worth the
initiative and the pin it will get on d2. I think most engines try to shy away
as much as possible from doubled pawns ... but not Rybka. 0.00/12 8 21.Bxe5
(Nd2) 0.32/16 29 21...dxe5 –0.32/13 5 22.gxh6 –0.05/17 32 22...Rxh6 –0.33/14 12
23.h5 –0.30/17 24 23...Bg5+ –0.43/14 9 24.Nd2 –0.32/17 10 24...Rd8 (Bc6)
–0.32/14 12 25.Rh2 (Rh3) –0.43/15 22 25...f5 (Ke7) –1.09/13 7 26.Rh3 (Be2)
–0.78/14 11 26...Bxe4 (fxe4) –1.54/13 9 27.Rhh1 (Be2) -2.29/17 58 27...Rh7
-2.40/14 8 28.Bxe4 (Rhe1) -3.03/17 41 28...fxe4
3rk3/7r/p3p3/4p1bP/Pp2p3/8/1PPN2P1/2KR3R w - - 0 29
Well here we have 3 pawns stacked up on top of each other!!! This is against all
chess principles. Again Rybka evaluates correctely that this weakness will not
be a liability because the game will be over before white can exploit this
weakness. -3.42/13 6 29.Rhe1 -3.24/17 26 29...Rxh5 (Rhd7) -3.36/13 8 30.c3
-2.78/17 26 30...b3 (e3) -4.02/14 16 31.Re2 -7.19/18 16 31...Rh7 -4.84/15 7
32.g3 -7.42/16 4 32...Rhd7 -5.72/17 19 33.c4 (Rh2) –10.06/17 14 33...e3 A nice
example of how strong Rybka is in the middle game. -8.65/15 6 0–1
There has been a lot of talk of how weak Rybka is in the ending. While I agree
with that in general but I think a more accurate description is that Rybka has
some big gaps in its ending knowledge. Rybka can play some excellent endings
and can pull out resources that only a top GM can dream about. Here is a good
save by actively playing the endgame.
Rybka also plays dynamic middle games very impressively (even at short time
controls). Here is a nice win.
(7) Fruit 2.2.1 - Rybka 1.01 Preview 2 32-bit [C95]
tourney 1 Home (8.3), 27.12.2005
[0.44;0.21]
GenuineIntel 3198 MHz W=14.1 ply; 629kN/s; Fritz9.ctg B=12.6 ply; 137kN/s;
Fritz9.ctg 1.e4 0 1...e5 0 2.Nf3 0 2...Nc6 0 3.Bb5 0 3...a6 0 4.Ba4 0 4...Nf6 0
5.0–0 0 5...Be7 0 6.Re1 0 6...b5 0 7.Bb3 0 7...d6 0 8.c3 0 8...0–0 0 9.h3 0
9...Nb8 0 10.d4 0 10...Nbd7 0 11.Nbd2 0 11...Bb7 0 12.Bc2 0 12...Re8 0 13.Nf1 0
13...Bf8 0 14.Ng3 0 14...g6 0 15.a4 0 15...c5 0 16.d5 0 16...c4 0 17.Bg5 0
17...h6 0 18.Be3 0 18...Nc5 0 19.Qd2 0 19...h5 0 20.Bg5 0 20...Be7 0 21.Ra3 0
21...Rb8 0 22.Rea1 0 22...Bc8 0 23.axb5 0 23...axb5 0 24.Ra7 0 24...Rb7 0 25.Ra8
0 25...Nfd7 0 26.Be3 0 26...Qc7 0 27.R8a3 0.44/12 15 27...Nf6 (h4) 0.21/12 35
28.R3a2 (Rd1) 0.44/12 22 28...Bd7 0.14/10 7 29.Qe2 (Qe1) 0.43/12 10 29...Reb8
0.11/11 10 30.Bd2 0.35/12 10 30...Na4 (Ne8) 0.09/11 8 31.Qe1 (Bd1) 0.42/12 11
31...Ra7 (Nc5) 0.09/11 8 32.Be3 0.34/13 15 32...Ra6 (Ra5) 0.08/13 12 33.Ra3
(Qd2) 0.37/13 21 33...Rba8 0.05/12 14 34.R1a2 (Qd2) 0.34/12 25 34...Ra5 0.05/11
11 35.Qc1 (Qa1) 0.32/11 11 35...Bc8 (R8a6) 0.07/10 7 36.Qa1 0.51/13 10 36...Bd7
(Bd8) 0.07/11 2 37.b3 (b4) 0.64/13 13 37...cxb3 0.10/10 3 38.Bxb3 0.63/11 13
38...Qc8 (Kg7) 0.09/10 7 39.Bd1 (Bc2) 0.54/11 13 39...Qb7 (R5a6) 0.09/10 9
40.Bc2 (Be2) 0.47/11 12 40...Qc7 0.10/10 7 41.Bd2 (Bd3) 0.50/12 15 41...Qc4
(R5a6) 0.10/10 6 42.Bd1 Black needs to something going here ... what should he
play ? 0.56/12 9
r5k1/3bbp2/3p1np1/rp1Pp2p/n1q1P3/R1P2NNP/R2B1PP1/Q2B2K1 b - - 0 42
42...Nxe4! Unbelievable ... Rybka goes for a Queen sac right in the middle
game. –0. 49/12 10 43.Bb3 0.48/13 8 43...Nxd2 –0.62/13 9 44.Bxc4 0.12/13 9
44...Nxc4 –0.61/13 7 45.Kh2 (h4) 0.08/13 10 45...Kg7 (Nxa3) –0.73/12 8 46.Rb3
(Qe1) 0.05/13 12 46...Nc5 –0.94/14 10 47.Rbb2 0.02/14 8 47...Nb3 (h4) –0.93/14 8
48.Rxa5 –0.08/14 6 48...Rxa5 –0.88/14 5 49.Qd1 –0.04/15 5 49...Nxb2 –0.86/14 4
50.Qxb3 –0.04/14 3 50...Nc4 (Nd3) –0.87/14 21 51.Ne4 (Qc2) 0.00/14 6 51...Ra3
–0.87/14 8 52.Qc2 (Qb4) –0.15/14 7 52...Nb6 (Bf5) –1.32/13 7 53.Qd2 –0.59/14 15
53...Ra4 –1.27/13 8 54.Ng3 –0.48/14 9 54...Bd8 (Rc4) –1.13/13 23 55.Nf1 –0.22/12
8 55...Rc4 (Nc4) –1.32/13 11 56.Ne3 –0.61/13 7 56...Rc5 –1.27/13 5 57.Ng1
–0.61/13 7 57...Bg5 –1.33/12 4 58.Ne2 (Nf3) –0.57/13 8 58...Rxd5 (h4) –1.38/13 4
59.Qe1 (Qa2) –0.89/13 4 59...Bxe3 –1.75/15 7 60.fxe3 –0.91/13 2 60...Nc4
–1.78/14 3 61.Ng3 –1.17/14 6 61...Rd3 –1.92/13 4 62.Nf1 –0.96/14 4 62...Bc6
(Nb6) –1.78/13 10 63.Qc1 (e4) –0.87/13 4 63...Bd5 –1.84/12 5 64.Qc2 (Qb1)
–0.88/15 6 64...Be4 –1.84/13 1 65.Qc1 –1.05/16 8 65...Kf6 (h4) –1.78/12 5 66.Qe1
–0.81/13 6 66...Ke6 –1.68/12 7 67.h4 (g4) –1.03/13 8 67...Bc6 (Nb6) –1.95/12 4
68.e4 –1.23/14 7 68...Kf6 (Nb6) –1.91/12 11 69.Kh1 (Qf2+) –1.13/14 9 69...Kg7
–1.86/13 5 70.Kg1 –1.10/15 7 70...Ba8 (Kg8) –1.88/14 4 71.Kh2 –1.09/15 3
71...Kf8 (Bb7) –1.87/14 5 72.Kg1 –1.10/15 6 72...Kg8 (Bb7) –1.87/15 7 73.Kh2
(Kh1) –1.09/15 4 73...Bc6 –1.87/15 4 74.Kg1 –1.13/16 11 74...Kg7 –1.86/15 15
75.Kh2 –1.12/16 6 75...Ba8 (Kf8) –1.86/15 9 76.Kg1 –1.12/15 4 76...Bb7 (Kf8)
–1.87/15 4 77.Kh2 –1.13/16 8 77...Kf8 –1.87/15 4 78.Kg1 (Kh1) –1.10/16 7
78...Bc6 –1.87/14 5 79.Kh1 (Kh2) –1.15/16 6 79...Ke7 –1.87/14 4 80.Kh2 (Kg1)
–1.15/15 5 80...Ke6 –1.96/12 3 81.Kg1 –1.11/14 6 81...Bb7 (f6) –1.87/12 8 82.Kf2
–1.11/14 3 82...Ke7 –1.87/12 2 83.Kg1 –1.12/15 4 83...Kd8 (f6) –1.87/14 6 84.Kh1
–1.14/15 6 84...Bc6 –1.86/14 5 85.Kg1 (Kh2) –1.12/15 3 85...Kd7 (f6) –1.86/14 10
86.Kh2 (Kh1) –1.12/15 6 86...Ke7 (f6) –1.86/13 2 87.Kh1 (Kg1) –1.16/15 8
87...Kf8 (f5) –1.87/13 3 88.Kh2 (Kg1) –1.11/15 6 88...Ke8 –1.82/13 3 89.Kg1
–1.15/15 3 89...Kd8 (f6) –1.75/13 4 90.Kh2 –1.15/14 4 90...Kd7 –1.83/14 7 91.Qf2
(Kg1) –1.19/14 6 91...Ke8 –1.88/14 4 92.Qe1 –1.15/16 4 92...f6 –1.86/13 2 93.Kh1
–1.24/15 4 93...Ke7 (Kf7) –1.83/13 5 94.Kg1 –1.24/15 6 94...Kf7 –1.83/13 4
95.Kh2 –1.14/15 4 95...Ke6 –1.84/13 3 96.Kg1 –1.24/15 3 96...Ke7 –1.84/12 3
97.Kh2 (Kf2) –1.26/14 3 97...Nb6 –1.93/13 3 98.Ne3 –1.12/14 3 98...Na4 –1.76/13
5 99.c4 –0.95/14 5 99...bxc4 –1.51/12 2 100.Nxc4 (Qa5) –0.89/13 3 100...Nc5
–1.48/11 2 101.Qa5 –0.56/13 4 101...Bxe4 –1.27/11 3 102.Qc7+ –0.63/13 4
102...Ke6 –1.27/11 2 103.Qb8 –0.63/13 5 103...Bf5 (Kd7) –1.17/10 2 104.Qe8+
(Qg8+) –0.49/11 2 104...Kd5 –1.75/2 0 105.Nb6+ –0.15/13 5 105...Kd4 –1.09/11 2
106.Qc6 (Qb5) –0.15/13 4 106...Ne4 –0.94/9 1 107.Qc4+ –0.09/12 3 107...Ke3
–1.67/2 0 108.Nd5+ 0.00/13 4 108...Kd2 –0.74/10 1 109.Qb5 (Qb4+) 0.00/13 4
109...Nf2 (g5) –0.17/9 3 110.Kg1 (Qa5+) 0.00/11 3 Here it seems that Fruit has
somehow neutralized black and might escape with a draw but Rybka shows that the
center passed pawns will make all the difference.
8/8/3p1pp1/1Q1Npb1p/4n2P/3r4/3k2PK/8 b - - 0 109
110...Nd1! (Ne4) –0.70/11 4 111.Nxf6 0.00/11 3 111...Nc3 (Ne3) –1.37/10 2
112.Qb2+ –0.17/10 2 112...Kd1 –1.65/10 1 113.Kf1 0.00/11 5 113...d5 (e4)
-2.10/11 3 114.Kg1 (Qb4) –0.62/11 3 114...e4 (d4) -3.75/10 3 115.g3 (Qb3+)
–1.46/10 3 115...e3 (Rxg3+) -6.26/11 3 116.Nxd5 (Qa1+) -4.43/12 3 116...Nxd5
-7.09/11 2 117.g4 (Qb1+) -7.16/13 8 117...hxg4 (Nc3) -8.03/11 3 118.Qa1+
–18.13/15 15 118...Ke2 -8.91/11 1 119.Qb2+ (Qa2+) –19.86/15 4 119...Kf3 (Rd2)
–12.23/13 17 120.Qg2+ -6.07/11 2 120...Kf4 -6.92/2 0 121.Qf1+ –11.40/13 4
121...Ke5 –12.25/13 11 122.Qe1 –12.55/13 3 122...Nc3 –13.10/12 6 123.Qg3+
–14.02/13 3 123...Kd4 (Ke4) –17.01/12 10 0–1
(14) Rybka 1.01 Preview 2 32-bit - Fruit 2.2.1 [B85]
tourney 1 Home (33.3), 28.12.2005
[0.08;0.11]
GenuineIntel 3198 MHz W=14.1 ply; 193kN/s; Fritz9.ctg B=15.8 ply; 1,033kN/s;
Fritz9.ctg 1.e4 0 1...c5 0 2.Nf3 0 2...d6 0 3.d4 0 3...cxd4 0 4.Nxd4 0 4...Nf6 0
5.Nc3 0 5...a6 0 6.Be2 0 6...e6 0 7.0–0 0 7...Be7 0 8.f4 0 8...0–0 0 9.a4 0
9...Qc7 0 10.Kh1 0 10...Nc6 0 11.Be3 0 11...Re8 0 12.Bf3 0 12...Bf8 0 13.Qd2 0
13...Na5 0 14.Qf2 0 14...Nc4 0 15.Bc1 0 15...e5 0 16.Nde2 0 16...d5 0 17.fxe5 0
17...Nxe5 0 18.Bf4 0 18...dxe4 0 19.Nxe4 0 19...Nd5 0 20.Bg3 0 20...Bf5 0
21.Rad1 0.08/10 9 21...Bxe4 (Nb6) –0.01/1 0 22.Bxe4 0.07/11 4 22...Nf6 –0.01/1 0
23.Nc3 0.00/11 7 23...Nxe4 0.11/12 11 24.Nxe4 –0.07/11 4 24...f6 0.10/13 17
25.Qf5 (Rfe1) –0.08/11 23 25...Qc8 –0.04/13 12 26.Rde1 –0.22/11 12 26...Qxf5
(Kh8) –0.30/13 11 27.Rxf5 –0.36/11 5 27...Nc6 –0.40/14 12 28.Rd5 (Rff1) –0.41/12
9 28...Rad8 –0.32/14 8 29.Rxd8 –0.58/14 12 29...Rxd8 –0.44/14 15 30.Kg1 (c3)
–0.60/14 14 30...Be7 –0.44/15 23 31.Bf2 (Kf1) –0.63/14 12 31...f5 –0.61/15 11
32.Bb6 (Ng3) –0.66/13 3 32...fxe4 (Rd7) –0.69/15 13 33.Bxd8 –0.47/14 3 33...Bxd8
–0.67/16 14 34.Rxe4 –0.44/13 3 34...Kf7
3b4/1p3kpp/p1n5/8/P3R3/8/1PP3PP/6K1 w - - 0 35
Athough the material is balanced this ending is impressively won by Rybka
against arguably the strongest endgame engine in such open positions. When I was
watching this game I thought for sure white would lose this game especially
after it seemed that the white rook was almost trapped on the 8th file. But I
had no idea that Rybka planned to sac that rook and overwhelm black's queenside
with it's King. –0.66/16 11 35.Kf2 (g3) –0.43/13 9 35...Bb6+ (Bc7) –0.66/15 13
36.Kf3 (Ke2) –0.32/13 9 36...Kf6 (Nd4+) –0.64/14 11 37.Re8 (g3) –0.29/12 10
37...Nd4+ (Bc7) –0.64/14 21 38.Ke4 –0.04/14 8 38...Ne6 –0.63/15 8 39.b4 –0.02/14
7 39...Bd8 (Bc7) –0.68/14 9 40.Rh8 –0.98/14 11 40...g6 (Kf7) –0.87/14 8 41.Kd5
–1.03/13 9 41...h5 (Kg7) –0.89/16 11 42.c4 (h3) –0.12/14 6 42...Kg7 –0.47/15 6
43.Kxe6! Ofcourse! The black king is completely out for a couple of moves and by
that time the white King mops up the black pawns. The white pawns are too
advanced and the black bishop is useless here. 0.20/186 43...Kxh8 –0.36/18 6
44.Kd7 0.73/17 10 44...Bf6 –0.02/17 10 45.Kc7 (c5) 0.83/14 10 45...b5 (Bc3)
0.40/17 15 46.cxb5 1.30/17 8 46...axb5 1.27/18 11 47.a5 1.72/18 5 47...Bd4 (Kg7)
2.33/20 6 48.a6 1.86/15 6 48...Kg7 4.72/22 10 49.Kb8 (Kb7) 3.85/18 106 49...Kf7
(Kf6) 5.49/20 111 50.a7 3.85/16 55 50...Be5+ (Bxa7+) 7.77/13 33 51.Kb7 (Kc8)
6.95/13 2 51...Bxh2 6.73/11 2 52.a8Q 6.95/12 2 52...Bf4 (Be5) 6.89/11 4 53.Ka6
To say that Rybka cannot play endings is completely false. It can play extremely
strong in the endings. It is just that in SOME endings it has HUGE gaps. 6.95/10
2 1–0
(20) Rybka 1.01 Preview 2 32-bit - Fruit 2.2.1 [B97]
tourney 2 Home (7.1), 31.12.2005
[0.00;0.00]
GenuineIntel 3198 MHz W=14.0 ply; 170kN/s; Fritz9.ctg B=15.8 ply; 853kN/s;
Fritz9.ctg 1.e4 0 1...c5 0 2.Nf3 0 2...d6 0 3.d4 0 3...cxd4 0 4.Nxd4 0 4...Nf6 0
5.Nc3 0 5...a6 0 6.Bg5 0 6...e6 0 7.f4 0 7...Qb6 0 8.Qd2 0 8...Qxb2 0 9.Rb1 0
9...Qa3 0 10.f5 0 10...Nc6 0 11.fxe6 0 11...fxe6 0 12.Nxc6 0 12...bxc6 0 13.e5 0
13...dxe5 0 14.Bxf6 0 14...gxf6 0 15.Ne4 0 15...Qxa2 0 16.Rd1 0 16...Be7 0
17.Be2 0 17...0–0 0 18.0–0 0 18...Ra7 0 19.Rf3 0 19...Kh8 0 20.Rg3 0 20...Rd7 0
21.Qh6 0 21...Rxd1+ 0 22.Bxd1 0 22...Rf7 0 23.Qh5 0 23...Qa5 0 24.Kf1 0 24...Qd8
0 25.Qxf7 0 25...Qxd1+ 0 26.Kf2 0 26...Qxc2+ 0 27.Ke3 0 27...Bc5+ 0 28.Nxc5 0
28...Qxc5+ 0 29.Kf3 0 29...e4+ 0 30.Kxe4 0 30...Qc2+ 0 31.Ke3 0 31...Qc3+ 0
32.Kf2 0.00/15 12 32...Qd2+ 0.00/15 16 33.Kf3 (Kf1) 0.00/15 3 33...Qd5+ (Qd3+)
0.00/17 18 34.Ke2 (Kf2) 0.00/17 16 34...Qc4+ (Qa2+) 0.00/13 15 35.Rd3 2.08/11 13
35...Qe4+ 0.00/14 14 ....
2b4k/5Q1p/p1p1pp2/8/4q3/3R4/4K1PP/8 w - - 0 36
Looks like Fruit has the initiative here. An extra pawn ahead with what looks
like an extra pawn to come, but Rybka has set a nasty trap
36.Kf2! 3.20/12 22 36...Qf5+? Here we see why Rybka is so dangerous. Rybka
evaluation has jumped to +3.20 It realized that the critical line is that if the
Queens are forced to be exchanged the black Bishop will be in trouble and that
even though black has more pawns the Rook will completely dominate the pawns. In
the meantime Fruit takes quite a while to realize that things are lost and
believes Kg1 is = 0.00/14 17 37.Kg1 (Ke1) 3.71/12 9 37...Qc5+ 1.85/14 16 38.Kf1
4.02/12 13 38...Qf5+ 2.12/13 13 39.Rf3 4.41/12 25 39...Qb1+ 2.12/13 15 40.Kf2
4.37/12 8 40...Qc2+ 3.29/12 8 41.Kg3 (Kg1) 4.35/13 27 41...Qg6+ 3.24/14 22
42.Qxg6 4.41/19 8 42...hxg6 4.00/19 12 43.Rd3 4.41/18 8 43...Kg7 4.00/19 10
44.Rd8 4.42/17 52 44...Bb7 4.01/18 13 45.Rd7+ 4.41/13 2 45...Kg8 (Kh6) 4.09/17 7
46.Rxb7 4.82/11 1 46...e5 (c5) 4.19/16 17 47.Kf3 (Rc7) 4.71/12 7 47...f5 4.18/14
7 48.Re7 (Rc7) 5.29/12 9 48...e4+ 4.95/16 18 49.Kf4 5.29/13 5 49...Kf8 (a5)
5.13/16 7 50.Ra7 (Rc7) 5.35/13 7 50...a5 5.24/15 14 51.Rxa5 5.35/12 5 51...Ke7
7.24/18 136 52.Kg5 (h4) 5.35/12 9 52...c5 (Ke6) 7.50/13 4 53.Kxg6 6.29/12 7
53...f4 (e3) 11.85/13 6 54.Rxc5 (h4) 6.30/12 6 1–0
(23) Shredder 9.1 UCI - Rybka 1.01 Preview 2 32-bit [B80]
tourney 2 Home (16.3), 31.12.2005
[0.25;0.50]
GenuineIntel 3198 MHz W=13.8 ply; 451kN/s; Fritz9.ctg B=12.1 ply; 142kN/s;
Fritz9.ctg 1.e4 0 1...c5 0 2.Nf3 0 2...d6 0 3.d4 0 3...cxd4 0 4.Nxd4 0 4...Nf6 0
5.Nc3 0 5...a6 0 6.Be3 0 6...e6 0 7.f3 0 7...b5 0 8.g4 0 8...h6 0 9.Qd2 0
9...Nbd7 0 10.0–0–0 0 10...Bb7 0 11.h4 0 11...b4 0 12.Na4 0 12...Qa5 0 13.b3 0
13...Nc5 0 14.a3 0 14...Rc8 0 15.axb4 0 15...Nxb3+ 0 16.Nxb3 0 16...Qxa4 0
17.Kb2 0 17...d5 0 18.c3 0 18...dxe4 0 19.Na5 0 19...Bd5 0 20.Ra1 0 20...Qd7 0
21.Bxa6 0 21...exf3 0 22.Bxc8 0 22...Qxc8 0 23.g5 0 23...Ne4 0 24.Qc2 0 24...Bd6
0 25.Bd4 0 25...e5 0 26.Be3 0 26...0–0
2q2rk1/5pp1/3b3p/N2bp1P1/1P2n2P/2P1Bp2/1KQ5/R6R w - - 0 27
This is the position after the last book move. Not a pleasant position for black
at all, especially against a strong attacker such as Shredder. Yet Rybka somehow
manages to control the situation and even turns the tables. 0.50/10 20 27.Rhd1
0.25/13 36 27...Ba8 (Qe6) 0.95/10 9 28.gxh6 1.44/14 19 28...gxh6 (g6) 1.29/10 23
29.Bxh6 (Qd3) 2.34/13 30 29...Rd8 0.70/9 3 30.Be3 1.68/14 65 30...Kh8 0.92/10 11
31.Qb3 (h5) 1.79/14 25 31...Rg8 0.67/8 3 32.Rg1 1.85/13 17 32...Rxg1 (Rd8)
0.95/11 14 33.Rxg1 2.09/14 6 33...Qf5 1.18/12 19 34.Qa4 2.18/13 9 34...Qc8
1.30/12 14 35.Qc2 2.32/14 22 35...Be7 (f5) 1.35/11 10 36.Qd3 2.65/13 10 36...Bf6
(f5) 1.67/11 17 37.Bb6 (Nc4) 2.97/13 23
b1q4k/5p2/1B3b2/N3p3/1P2n2P/2PQ1p2/1K6/6R1 b - - 0 37
37...f2! Terrific move by Rybka. Fritz still gives itself a +2.0 1.33/11 9
38.Bxf2 2.32/15 27 38...Nxf2 1.29/13 8 39.Qe3 2.32/15 17 39...Ng4 1.35/13 8
40.Rxg4 (Qh3) 2.33/15 15 40...Qxg4 0.95/11 3 41.Qh6+ 2.22/15 10 41...Kg8 0.72/2
0 42.Qxf6 2.22/15 7 42...Qe2+ 1.10/10 2 43.Ka3 2.47/15 10 43...Bf3 1.14/11 5
44.Nb3 2.41/14 10 44...Qe3 1.08/11 5 45.Qd8+ 2.17/14 10 45...Kg7 0.99/12 20
46.c4 (Kb2) 2.13/14 7 46...Qa7+ (Be2) 0.99/11 5 47.Kb2 (Qa5) 2.42/13 5 47...Qf2+
1.13/9 2 48.Nd2 2.36/13 6 48...e4 (Bb7) 0.82/10 5 49.Kc3 (Qg5+) 2.41/11 7
49...Qe3+ 0.73/10 8 50.Kc2 2.15/11 1 50...Qe2 (Qf2) 0.50/11 11 51.Qd4+ 2.65/11 4
51...f6 (Kg8) 0.34/12 9 52.Kb3 2.21/12 6 52...Qd1+ 0.21/12 7 53.Kb2 2.21/13 3
53...Qe2 0.24/12 7 54.Ka3 (Qd7+) 1.35/12 11 54...e3 0.60/11 4 55.Ne4 (Nb3)
1.34/11 3 55...Bxe4 0.00/12 9 56.Qxe4 0.01/12 6 56...Qd2 0.00/12 7 57.Qe7+ (h5)
0.01/11 2 57...Kg6 –0.23/10 4 58.Qe4+ 0.01/11 3 58...Kh5 (Kh6) –0.27/11 5
59.Qf5+ 0.01/11 5 59...Kxh4 0.00/12 5 60.Qf4+ (Qxf6+) 0.01/11 2 60...Kh3 (Kh5)
–0.78/10 4 61.Qf3+ 0.00/12 5 61...Kh2 –0.74/11 4 62.Kb3 –0.36/12 7 62...e2
-2.05/12 5 63.Qf2+ –0.79/13 2 63...Kh3 -2.05/15 5 64.Qf3+ –0.79/14 2 64...Kh4
-2.07/15 3 65.Qf2+ –1.54/14 22 65...Kg5 -2.13/13 4 66.Qg3+ (Qg2+) –1.54/14 2
66...Kf5 -4.11/14 5 67.Qf3+ (Qh3+) –1.54/14 4 67...Ke5 -4.18/14 4 68.Qh5+
–1.54/14 4 68...f5 (Kd6) -4.69/14 3 69.Qh8+ –1.55/13 1 69...Ke6 (Ke4) -8.38/14 8
70.Qe8+ -5.34/14 11 70...Kf6 -8.38/14 3 71.Qc6+ -5.09/14 3 71...Ke5 -8.38/15 8
72.Qc5+ -7.27/14 6 72...Kf4 -8.38/15 4 73.Qf2+ -7.93/14 2 73...Ke4 -9.23/15 13
74.Qg2+ -8.21/14 4 74...Kd3 A fantastic game played by Rybka. From a lost
position to a won position. It is not often that Shredder is made to look like
an amateur. -9.23/15 8 0–1
(24) Rybka 1.01 Preview 2 32-bit - Fritz 9 [B47]
tourney 2 Home (18.2), 31.12.2005
[0.23;0.90]
GenuineIntel 3198 MHz W=13.7 ply; 166kN/s; Fritz9.ctg B=11.2 ply; 1,152kN/s;
Fritz9.ctg 1.e4 0 1...c5 0 2.Nf3 0 2...Nc6 0 3.d4 0 3...cxd4 0 4.Nxd4 0 4...e6 0
5.Nc3 0 5...Qc7 0 6.Be2 0 6...a6 0 7.0–0 0 7...Nf6 0 8.Kh1 0 8...Nxd4 0 9.Qxd4 0
9...Bc5 0 10.Qd3 0 10...b5 0 11.f4 0 11...Bb7 0 12.Bf3 0 12...h5 0 13.e5 0
13...Ng4 0 14.Bxb7 0 14...Qxb7 0 15.Ne4 0 15...Be7 0 16.b3 0 16...Rc8 0 17.Bb2 0
17...Nh6 0 18.Qf3 0 18...Qb6 0.90/12 14 19.Rf2 (c3) 0.23/11 18 19...Nf5 0.73/12
18 20.Rd1 (Re2) 0.20/11 14 20...Qe3 0.24/13 30 21.c3 (Qe2) 0.16/12 14 21...Rc6
0.22/12 20 22.g3 (Qxe3) 0.10/12 10 22...Qxf3+ –0.06/13 18 23.Rxf3 0.12/13 2
23...h4 (d5) –0.02/13 21 24.Kg2 0.25/12 7 24...d5 –0.04/12 21 25.exd6 0.26/12 2
25...Nxd6 0.06/12 12 26.Re3 (Nf2) 0.13/13 19 26...Nxe4 (hxg3) –0.10/11 13
27.Rxe4 0.14/12 5 27...Bf6 (hxg3) –0.20/11 15 28.f5 0.07/12 12 28...h3+ (a5)
–0.18/11 14 29.Kf3 (Kf2) 0.09/13 7 29...0–0 –0.01/12 13 30.fxe6 0.15/13 3
30...Rxe6 –0.03/13 13 31.Rd2 (Rxe6) 0.17/14 8 31...Bg5 (Rxe4) 0.00/12 15 32.Rc2
(Rd1) 0.12/13 9 32...Rxe4 0.20/12 11 33.Kxe4 0.00/13 3 33...f5+ 0.16/12 11
34.Kd5 0.00/14 9 34...Bf6 (f4) 0.27/12 15 35.Ke6 1.01/14 20 35...Kh7 0.42/12 6
36.Ba3 1.03/16 11 36...Rc8
2r5/6pk/p3Kb2/1p3p2/8/BPP3Pp/P1R4P/8 w - - 0 37
0.51/13 6 37.c4! Rybka goes for its strength, the passed pawn. Fritz totally
underestimates this pawn break. 1.37/1516 37...Kg6 (bxc4) 0.86/12 7 38.c5! (Bd6)
1.46/11 3 38...Re8+ 1.45/13 12 39.Kd7 1.73/13 13 39...Re7+ 1.48/12 13 40.Kc6
(Kc8) 2.00/13 8 40...Re8 (Re1) 1.79/12 10 41.Kb7 2.53/12 6 41...Be7 (Be5)
2.08/12 7 42.Re2 3.95/15 7 42...Bxc5 (Kf7) 2.41/14 5 43.Rxe8 4.05/14 2 43...Bxa3
2.64/14 6 44.Kxa6 3.99/15 6 44...b4 2.69/15 5 45.Rh8 (Rc8) 4.05/16 4 45...Kf6
3.12/16 9 46.Rxh3 4.05/17 6 46...g5 3.37/15 6 47.Rh6+ 4.05/17 7 47...Ke5 (Ke7)
3.46/15 4 48.Rg6 4.05/18 12 48...Bc1 (Bb2) 3.73/15 6 49.Kb5 4.05/14 1 49...Bd2
(g4) 3.73/15 7 50.Kc4 4.05/14 6 50...Ke4 (g4) 4.04/14 7 51.Re6+ (Rd6) 4.05/11 2
51...Kf3 3.73/11 0 52.Rd6 (Re5) 4.05/14 5 52...Be3 3.32/12 4 53.Rd5 4.05/14 14
53...Kg4 (Bc1) 3.19/13 6 54.Kxb4 4.05/13 1 54...f4 (Bc1) 3.09/13 5 55.gxf4
4.05/16 4 55...gxf4 3.35/14 5 56.Kc4 4.05/17 3 56...Bg1 (Bc1) 4.20/14 6 57.h3+
(b4) 4.05/15 7 57...Kxh3 (Kf3) 3.22/14 5 58.a4 (Rf5) 4.72/15 5 58...Kh4 (f3)
4.45/13 4 59.a5 6.30/16 3 59...f3 (Kg3) 4.96/15 7 60.Kd3 6.30/18 11 60...Kg4
(Ba7) 5.35/15 5 61.a6 (b4) 6.30/16 5 61...Kf4 (Bb6) 5.63/14 5 62.Rd7 (b4)
6.30/15 5 62...Ke5 5.59/14 3 63.a7 (b4) 6.30/14 3 63...f2 (Bxa7) 5.55/14 6
64.Ke2 6.30/11 4 64...f1B+ (f1Q+) 5.94/16 3 65.Kxf1 6.30/17 3 65...Bxa7 6.25/17
4 66.Rxa7 15.07/19 4 66...Kd6 #35/17 8 67.b4 15.01/11 5 67...Ke6 (Kc6) #38/14 2
68.Ra1 319.62/13 0 68...Kf7 (Kd6) #24/13 1 69.b5 319.62/7 0 69...Kf6 (Kg8) #15/7
0 70.b6 319.70/5 0 70...Kg5 (Ke5) #11/7 0 71.b7 319.70/4 0 71...Kf4 (Kf6) #8/5 0
72.b8Q+ 319.70/2 0 72...Ke4 (Kg4) #5/5 0 73.Qd6 (Ra5) 319.86/2 0 73...Kf5 (Kf3)
#4/5 0 74.Qd5+ 319.86/1 0 74...Kg6 (Kf4) #3/3 0 75.Ra6+ 319.90/1 0 75...Kh7
(Kg7) #2/3 0 76.Qb7+ (Qd7+) 319.90/1 0 76...Kh8
7k/1Q6/R7/8/8/8/8/5K2 w - - 0 77
White to play and win in one move. Can Rybka find the move ??? #1/2 0
77.Rh6+????! Although Rybka still manages to win this game, the miss of Ra8# is
perplexing. Fortunately in this case a mate is still found. 319.72/1 0 77...Kg8
#2/4 0 78.Qh7+ (Rh7) 319.72/1 0 78...Kf8 #2/4 0 79.Rf6+ (Rg6) 319.72/1 0
79...Ke8 #2/4 0 80.Qf7+ (Rg6) 319.72/1 0 80...Kd8 #2/4 0 81.Rd6+ (Rh6) 319.72/1
0 81...Kc8 #2/4 0 82.Qd7+ (Rg6) 319.72/1 0 82...Kb8 #2/3 0 83.Qb5+ (Rb6+)
319.72/1 0 83...Kc8 #3/4 0 84.Qc6+ (Qa6+) 319.68/1 0 84...Kb8 #2/3 0 85.Qb6+
(Rd8+) 319.68/1 0 85...Ka8 #1/2 0 86.Qd8+ (Rd8#) 319.66/1 0 86...Ka7 #2/3 0
87.Qc7+ (Qe7+) 319.68/1 0 87...Ka8 #1/2 0 88.Ra6# 319.68/1 0 1–0
This last game shows some of the BAD in Rybka … but that’s another post.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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