Author: George Tsavdaris
Date: 14:50:17 01/07/06
Go up one level in this thread
On January 07, 2006 at 17:18:13, Majd Al-Ansari wrote: Tourney 5_3 128mb hash (418 games) Hardware PIV 3.2Ghz 2GB RAM GUI Fritz 9.ctg / Ponder OFF 1.Rybka 1.01 Preview 2 32-bit 44.0 - 26.0 38.0 - 32.0 38.0 - 31.0 120.0/209 2.Fritz 9 26.0 - 44.0 39.0 - 30.0 36.0 - 34.0 101.0/209 3.Shredder 9.1 UCI 32.0 - 38.0 30.0 - 39.0 36.5 - 33.5 98.5/209 4.Fruit 2.2.1 31.0 - 38.0 34.0 - 36.0 33.5 - 36.5 98.5/209 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 ... [D]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. [D]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?! [D]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? [D]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 [D]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) [D]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 [D]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? [D]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 [D]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 ..... [D]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! [D]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 [D]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 .... [D]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! [D]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 [D]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 [D]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. [D]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 [D]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 .... [D]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 [D]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 [D]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 [D]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 [D]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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