Deep Rybka 4.1 SSE42 x64
vs.
Houdini 1.5a x64

100-Game Match
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Score After 100 Rounds (W-L-D):
Rybka 51 (25-23-52) | Houdini: 49 (23-25-52)

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Updated: June 24, 2011
Site: Kansas City, Missouri, USA
Contact: westportchessclub.org [AT] gmail [D0T] com
See Also: Westport Chess Club home page & Computer Chess page
Time: 120 min./1st 40 moves; 120 min./next 40 moves; 90 min. + 30 seconds/move for rest of game
Hardware: AMD Phenom(tm) 9750 Quad-Core Processor with 8 GBs Memory
Operating System: Windows 7 Professional SP1 (Build 7600) 64-bit
Tablebases: Gaviota & Nalimov 3-4-5 piece EGTBs on an SSD
Opening Book: Generic books up to move 10
Hash Size (each): 2,048 MBs
Ponder: Off
The most recent win (Game 99) is shown below.
Competitors Round Date ECO Result
Rybka - Houdini 1 2011/04/03 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+, Main Line, 9.Ne5 1/2-1/2
Houdini - Rybka 2 2011/04/04 B48: Sicilian: Taimanov, 6.Be3 a6 7.Qd2 Nf6 8.0-0-0 0-1
Rybka - Houdini 3 2011/04/05 C54: Giuoco Piano: 5.c3 a6 6.Bb3 Ba7 1/2-1/2
Houdini - Rybka 4 2011/04/06 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.Bd3 Rc8 1/2-1/2
Rybka - Houdini 5 2011/04/06 C92: Spanish: Closed, Zaitsev, 10.Qe2 1/2-1/2
Houdini - Rybka 6 2011/04/07 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 h5 9.Qd2 1-0
Rybka - Houdini 7 2011/04/08 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+, Main Line, 9.Ne5 1/2-1/2
Houdini - Rybka 8 2011/04/08 B47: Sicilian: Taimanov, 6.g3 a6 7.Bg2 Nf6 8.0-0 Be7 1-0
Rybka - Houdini 9 2011/04/09 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.Bd3 Be7 1/2-1/2
Houdini - Rybka 10 2011/04/10 C91: Spanish: Closed, 9.d4 Bb7 1/2-1/2
Rybka - Houdini 11 2011/04/11 B49: Sicilian: Taimanov, 6.Be2 a6 7.0-0 Nf6 8.Be3 Bb4 9.Na4 0-0 1/2-1/2
Houdini - Rybka 12 2011/04/12 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 1/2-1/2
Rybka - Houdini 13 2011/04/13 B80: Sicilian: Scheveningen, English, 7...b5 8.g4 h6 1-0
Houdini - Rybka 14 2011/04/14 D58: QGD: Tartakower, 8.Be2 Bb7 1/2-1/2
Rybka - Houdini 15 2011/04/14 D47: Semi-Slav: Meran, Wade, 9.0-0 Bd6 1/2-1/2
Houdini - Rybka 16 2011/04/15 C91: Spanish: Closed, 9.d4 exd4 1-0
Rybka - Houdini 17 2011/04/17 D49: Semi-Slav: Meran, Blumenfeld Variation 0-1
Houdini - Rybka 18 2011/04/17 B48: Sicilian: Taimanov, 6.Be3 a6 7.Qd2 Nf6 8.0-0-0 1/2-1/2
Rybka - Houdini 19 2011/04/18 D46: Semi-Slav: Chigorin, 7.Bd3 Main Line 1/2-1/2
Houdini - Rybka 20 2011/04/19 D37: QGD: Classical, 5...0-0 6.e3 c5 7.dxc5 Bxc5 8.a3 Nc6 9.Qc2 1-0
Rybka - Houdini 21 2011/04/20 C96: Spanish: Closed, Chigorin, 11.d4 1/2-1/2
Houdini - Rybka 22 2011/04/21 E98: King's Indian: Mar del Plata, 9.Ne1 Ne8 1/2-1/2
Rybka - Houdini 23 2011/04/21 B90: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.Qd2 Nbd7 9.f3 Rc8 1-0
Houdini - Rybka 24 2011/04/22 E97: King's Indian: Mar del Plata, Odessa Variation 0-1
Rybka - Houdini 25 2011/04/24 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb7, 7...a5 8.0-0 0-0 1/2-1/2
Houdini - Rybka 26 2011/04/25 D78: Neo-Grunfeld, 6.c4 c6 7.b3 Qa5 1/2-1/2
Rybka - Houdini 27 2011/04/27 B46: Sicilian: Taimanov, 5.Nc3 Nc6 6.Nxc6 bxc6 7.Be2 Qc7 1-0
Houdini - Rybka 28 2011/04/28 B49: Sicilian: Taimanov, 6.Be2 a6 7.0-0 Nf6 8.Be3 Bb4 1/2-1/2
Rybka - Houdini 29 2011/04/29 E12: Queen's Indian: Petrosian, 6.cxd5 Nxd5 7.e3 g6 1-0
Houdini - Rybka 30 2011/04/30 B49: Sicilian: Taimanov, 6.Re1 b5 7.Bb3 d6 8.c3 0-0 1/2-1/2
Rybka - Houdini 31 2011/05/01 E12: Queen's Indian: Petrosian, 5.a3 d5 6.Bg5 Be7 7.Qa4+ Bc6 8.Qb3 1/2-1/2
Houdini - Rybka 32 2011/05/02 B42: Sicilian: Kan, 5.Nc3 Qc7 6.Bd3 Nf6 7.0-0 d6 1-0
Rybka - Houdini 33 2011/05/04 B80: Sicilian: Scheveningen, English, 7...b5 8.Qd2 Nbd7 1-0
Houdini - Rybka 34 2011/05/05 B66: Sicilian: Richter-Rauzer, 7...a6 8.0-0-0 h6 9.Bf4, 11.f3 1/2-1/2
Rybka - Houdini 35 2011/05/06 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+, Main Line, 9.Ne5 1-0
Houdini - Rybka 36 2011/05/07 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+, Main Line, 9.Ne5 1-0
Rybka - Houdini 37 2011/05/08 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.Nd5 Nxd5 0-1
Houdini - Rybka 38 2011/05/08 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Bd3 h6 10.Qd2 Nbd7 1/2-1/2
Rybka - Houdini 39 2011/05/09 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Bd3 Nbd7 10.0-0 b5 1/2-1/2
Houdini - Rybka 40 2011/05/09 C88: Spanish: Closed, Anti-Marshall 8.h3 Bb7 9.d3 Bd6 10.a4 Na5 1-0
Rybka - Houdini 41 2011/05/10 B90: Sicilian: Najdorf, 6.Be3 Ng4 7.Bg5 h6 8.Bh4 g5 9.h3 Ne5 1/2-1/2
Houdini - Rybka 42 2011/05/10 B45: Sicilian: Taimanov, Four Knights, 6.Ndb5 d6 7.Bf4 1-0
Rybka - Houdini 43 2011/05/14 B80: Sicilian: Scheveningen, English, 7...b5 8.g4 h6 1/2-1/2
Houdini - Rybka 44 2011/05/14 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.Bd3 Rc8 10.Qe2 Be7 1/2-1/2
Rybka - Houdini 45 2011/05/16 D46: Semi-Slav: Chigorin, 7.Bd3 Main Line 1-0
Houdini - Rybka 46 2011/05/16 D47: Semi-Slav: Meran, Wade, Main Line 1/2-1/2
Rybka - Houdini 47 2011/05/18 D87: Grunfeld: Classical Exchange, 10. 0-0 Na5 1-0
Houdini - Rybka 48 2011/05/19 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5 1/2-1/2
Rybka - Houdini 49 2011/05/20 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.Bd3 Be7 1/2-1/2
Houdini - Rybka 50 2011/05/21 C90: Spanish: Closed, Lutikov Variation 1/2-1/2
Rybka - Houdini 51 2011/05/23 E12: Queen's Indian: Petrosian, 6.cxd5 Nxd5 7.Bd2 Nd7 8.Nxd5 exd5 9.g3 Bd6 0-1
Houdini - Rybka 52 2011/05/23 E12: Queen's Indian: Petrosian, 6.cxd5 Nxd5 7.Bd2 Nd7 8.Nxd5 exd5 9.g3 Bd6 1-0
Rybka - Houdini 53 2011/05/24 E32: Nimzo-Indian: Classical, 4...0-0 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 Bb7 8.e3 d6 1-0
Houdini - Rybka 54 2011/05/24 E32: Nimzo-Indian: Classical, 4...0-0 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 Bb7 8.e3 d6 1/2-1/2
Rybka - Houdini 55 2011/05/28 A33: English: Symmetrical, Geller, 7.Nb3 Ne5 8.e4 Bb4 9.Qe2 d6 10.f4 Nc6 0-1
Houdini - Rybka 56 2011/05/28 A33: English: Symmetrical, Geller, 7.Nb3 Ne5 8.e4 Bb4 9.Qe2 d6 10.f4 Nc6 1-0
Rybka - Houdini 57 2011/05/29 B92: Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.0-0 0-0 9.Be3 1/2-1/2
Houdini - Rybka 58 2011/05/29 B92: Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.0-0 0-0 9.Be3 1-0
Rybka - Houdini 59 2011/05/30 E04: Catalan: Open, 5.Bg2 Nc6 6.Qa4 Bb4+ 7.Bd2 Nd5 8.Bxb4 Ndxb4 9.Nc3 Bd7 10.0-0 1-0
Houdini - Rybka 60 2011/05/30 E04: Catalan: Open, 5.Bg2 Nc6 6.Qa4 Bb4+ 7.Bd2 Nd5 8.Bxb4 Ndxb4 9.Nc3 Bd7 10.0-0 1/2-1/2
Rybka - Houdini 61 2011/05/31 C91: Ruy Lopez: Closed, 9.d4 Bb7 1-0
Houdini - Rybka 62 2011/05/31 C91: Ruy Lopez: Closed, 9.d4 Bb7 1-0
Rybka - Houdini 63 2011/06/01 C14: French: Classical, Steinitz, 7...a6 8.Nf3 c5 1-0
Houdini - Rybka 64 2011/06/01 C14: French: Classical, Steinitz, 7...a6 8.Nf3 c5 1/2-1/2
Rybka - Houdini 65 2011/06/02 A29: English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.0-0 Be7 8.a3 0-0 1/2-1/2
Houdini - Rybka 66 2011/06/02 A29: English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.0-0 Be7 8.a3 0-0 0-1
Rybka - Houdini 67 2011/06/03 B12: Caro-Kann: Advance, 4.Nf3 e6 5.Be2 Nd7 6.0-0 Ne7 7.Nbd2 h6 1/2-1/2
Houdini - Rybka 68 2011/06/03 B12: Caro-Kann: Advance, 4.Nf3 e6 5.Be2 Nd7 6.0-0 Ne7 7.Nbd2 h6 1-0
Rybka - Houdini 69 2011/06/04 B76: Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 0-0 8.bb3 d6 9.f3 Bd7 1/2-1/2
Houdini - Rybka 70 2011/06/04 B76: Sicilian: Accelerated Fianchetto, Modern, 7.Bc4 0-0 8.bb3 d6 9.f3 Bd7 1-0
Rybka - Houdini 71 2011/06/05 B38: Sicilian: Maroczy Bind, 7.Nc3 0-0 8.Be2 d6 9.0-0 Bd7 10.Qd2 Nxd4 1/2-1/2
Houdini - Rybka 72 2011/06/05 B38: Sicilian: Maroczy Bind, 7.Nc3 0-0 8.Be2 d6 9.0-0 Bd7 10.Qd2 Nxd4 1/2-1/2
Rybka - Houdini 73 2011/06/06 A01: Nimzowitsch-Larsen Attack: Modern Variation, Main Line (a.k.a. "Jrobi Pincer Attack" in some circles) 0-1
Houdini - Rybka 74 2011/06/06 A01: Nimzowitsch-Larsen Attack: Modern Variation, Main Line (a.k.a. "Jrobi Pincer Attack" in some circles) 1/2-1/2
Rybka - Houdini 75 2011/06/07 D43: Semi-Slav: Moscow, 6.Bh4 Gambit, Main Line, 9...Bb7 1-0
Houdini - Rybka 76 2011/06/07 D43: Semi-Slav: Moscow, 6.Bh4 Gambit, Main Line, 9...Bb7 0-1
Rybka - Houdini 77 2011/06/08 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.g4 b5 10.g5 b4 1-0
Houdini - Rybka 78 2011/06/08 B90: Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7 9.g4 b5 10.g5 b4 0-1
Rybka - Houdini 79 2011/06/09 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5 9.Ne5 Nfd7 10.Nxd7 Nxd7 1/2-1/2
Houdini - Rybka 80 2011/06/09 E15: Queen's Indian: Nimzowitsch, 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5 9.Ne5 Nfd7 10.Nxd7 Nxd7 1/2-1/2
Rybka - Houdini 81 2011/06/10 A87: Dutch: Leningrad, Main Line, 7.Nc3 Qe8 8.d5 Na6 9.Rb1 Bd7 10.b4 c6 1/2-1/2
Houdini - Rybka 82 2011/06/10 A87: Dutch: Leningrad, Main Line, 7.Nc3 Qe8 8.d5 Na6 9.Rb1 Bd7 10.b4 c6 0-1
Rybka - Houdini 83 2011/06/11 C45: Scotch: 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4 Ne5 8.Be2 Qg6 9.0-0 d6 1-0
Houdini - Rybka 84 2011/06/11 C45: Scotch: 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4 Ne5 8.Be2 Qg6 9.0-0 d6 1-0
Rybka - Houdini 85 2011/06/12 A07: Reti Opening: KIA, Yugoslav Variation, Main Line, 6.Nbd2 e5 1/2-1/2
Houdini - Rybka 86 2011/06/12 A07: Reti Opening: KIA, Yugoslav Variation, Main Line, 6.Nbd2 e5 1/2-1/2
Rybka - Houdini 87 2011/06/13 B09: Pirc: Austrian, 5...0-0 6.Bd3 Nc6 7.e5 dxe5 8.fxe5 Nh5 1-0
Houdini - Rybka 88 2011/06/13 B09: Pirc: Austrian, 5...0-0 6.Bd3 Nc6 7.e5 dxe5 8.fxe5 Nh5 0-1
Rybka - Houdini 89 2011/06/14 B67: Sicilian: Richter-Rauzer, 2.Nc3 Nc6, 7...a6, 9.f4 b5 10.Bxf6 gxf6 1-0
Houdini - Rybka 90 2011/06/14 B67: Sicilian: Richter-Rauzer, 2.Nc3 Nc6, 7...a6, 9.f4 b5 10.Bxf6 gxf6 1/2-1/2
Rybka - Houdini 91 2011/06/17 C52: Evans Gambit Accepted: Lasker's Defense 0-1
Houdini - Rybka 92 2011/06/17 C52: Evans Gambit Accepted: Lasker's Defense 1-0
Rybka - Houdini 93 2011/06/19 C88: Spanish: Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 10.Nc3 1/2-1/2
Houdini - Rybka 94 2011/06/19 C88: Spanish: Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 10.Nc3 1/2-1/2
Rybka - Houdini 95 2011/06/20 E32: Nimzo-Indian: Classical, 4.Qc2 0-0 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 Bb7 8.f3 h6 9.Bh4 1/2-1/2
Houdini - Rybka 96 2011/06/20 E32: Nimzo-Indian: Classical, 4.Qc2 0-0 5.a3 Bxc3+ 6.Qxc3 b6 7.Bg5 Bb7 8.f3 h6 9.Bh4 1/2-1/2
Rybka - Houdini 97 2011/06/21 B78: Siclian: Dragon, Yugoslav, 10.0-0-0 Rc8 1/2-1/2
Houdini - Rybka 98 2011/06/21 B78: Siclian: Dragon, Yugoslav, 10.0-0-0 Rc8 0-1
Rybka - Houdini 99 2011/06/22 D59: QGD: Tartakower, 8.cxd5 Nxd5 9.Bxe7 Qxe7 10.Nxd5 exd5 0-1
Houdini - Rybka 100 2011/06/22 D59: QGD: Tartakower, 8.cxd5 Nxd5 9.Bxe7 Qxe7 10.Nxd5 exd5 1/2-1/2