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Subject: Re: Fritz 9 - the first human-like chess engine in the world

Author: Drexel,Michael

Date: 15:03:20 10/28/05

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On October 28, 2005 at 18:00:22, Drexel,Michael wrote:

>"The program has become more human in a different way. It now has extensive
>chess knowledge and a human evaluation structure, ensuring that it finds good
>moves and interesting ideas where there are no direct tactics to guide it. You
>will appreciate the value of this when you analyze with the program. Fritz 9
>thinks and plans like a human, while retaining the tactical ferocity of the
>world’s top chess engine" www.chessbase.com
>
>You don´t believe this? You think that´s a load of crap?
>
>You are wrong, please look at the following examples and decide yourself:
>
>Example 1:
>
>[D]rnbqkb1r/ppp2ppp/3p1n2/4P3/4P3/2N5/PPP2PPP/R1BQKBNR b KQkq - 0 4
>
>Analysis by Fritz 9:
>
>4...Sfd7 5.exd6 Lxd6 6.Sb5 Lb4+ 7.c3 Lc5 8.Lg5 f6 9.Dh5+
>  ±  (0.91)   Depth: 7/21   00:00:00  53kN
>4...Sfd7 5.Sd5 dxe5 6.Lg5 f6 7.Lh6 Sc6 8.Dh5+ g6
>  ±  (0.76)   Depth: 8/27   00:00:00  255kN
>4...Sfd7 5.exd6 Lxd6 6.Sb5 Le7 7.Lf4 Sa6 8.Dd5 Lb4+ 9.c3 Lc5
>  ±  (0.94)   Depth: 9/27   00:00:00  504kN
>4...Sfd7 5.exd6 Lxd6 6.Sb5 Lb4+ 7.c3 La5 8.Dd5 0-0 9.Lg5
>  ±  (1.07)   Depth: 10/29   00:00:01  1063kN
>4...Sfd7 5.exd6 Lxd6 6.Sb5 Sf6 7.Lg5 0-0 8.Sf3 Sc6 9.Sxd6 cxd6 10.c3 De8 11.Lxf6
>Dxe4+
>  ±  (1.14)   Depth: 11/32   00:00:03  3319kN
>4...Sfd7 5.exd6 Lxd6 6.Sb5 De7 7.Sxd6+ cxd6 8.Ld3 0-0 9.Se2 Sc5 10.0-0 Sxe4
>11.Te1
>  ±  (1.02)   Depth: 12/37   00:00:10  9001kN
>4...Sfd7 5.exd6 Lxd6 6.Le3 0-0 7.Dd2 De7 8.0-0-0 Td8 9.Lf4 Se5 10.Sd5 De8
>  ±  (1.16)   Depth: 13/34   00:00:24  23816kN
>4...Sfd7 5.exd6 Lxd6 6.Le3 0-0 7.Dd2 De7 8.0-0-0 Sc6 9.Lg5 De6 10.Sf3 Sde5
>11.Sd4 Dg4
>  ±  (1.08)   Depth: 14/41   00:01:00  60691kN
>4...Sfd7 5.exd6 Lxd6 6.Le3 De7 7.Dd2 Sf6 8.Ld3 0-0 9.Sf3 Sc6
>  ±  (1.13)   Depth: 15/39   00:02:29  156351kN
>
>4...Nfd7!
>A Master would not even think about the materialistic 4...dxe5? which is the
>typical computer move in this position.
>Instead true masters of the game willingly give up pawns in exchange for a
>better position.
>Unlike other engines Fritz 9 understands the importance of development and King
>safety.
>
>Example 2:
>
>De Andrade,W - Lima,D, IX Taca BCX Brasiliat BRA 2005
>[D]rnbqk2r/1pp2pb1/p2p1npp/4P3/4P1P1/2N1B2P/PPP1BP2/R2QK1NR b KQkq - 0 1
>
>Analysis by Fritz 9:
>
>8...Nh7 9.exd6 Ng5 10.Qd3 Qxd6 11.0-0-0 Qxd3 12.Rxd3
>  +-  (1.80)   Depth: 7/24   00:00:00  113kN
>8...Nh7 9.exd6 Be6 10.Qd3 Qxd6 11.0-0-0 Qxd3 12.Rxd3 Ng5 13.Nf3
>  +-  (1.94)   Depth: 8/28   00:00:00  553kN
>8...Ng8!
>  +-  (1.93)   Depth: 8/28   00:00:00  607kN
>8...Ng8 9.f4 Ne7 10.Qd2 Nbc6 11.exd6 Qxd6 12.0-0-0 Qxd2+ 13.Rxd2 Bxc3
>  +-  (1.88)   Depth: 8/30   00:00:00  714kN
>8...Ng8 9.exd6 Bxc3+ 10.bxc3 cxd6 11.Nf3 Nf6 12.Bd3 Be6 13.0-0
>  +-  (1.91)   Depth: 9/29   00:00:01  1224kN
>8...Ng8 9.exd6 Bxc3+ 10.bxc3 cxd6 11.Bf4 Qf6 12.Qd2 Nc6 13.0-0-0 Qe6 14.Qd5 Nf6
>  +-  (1.87)   Depth: 10/34   00:00:02  2349kN
>8...Ng8 9.f4 Nc6 10.Nf3 h5 11.g5 dxe5 12.Qxd8+ Nxd8 13.Nd5
>  +-  (1.99)   Depth: 11/36   00:00:07  6541kN
>8...Nh7!
>  +-  (1.98)   Depth: 11/36   00:00:08  7264kN
>8...Nh7 9.Qd2 Bxe5 10.0-0-0 Nc6 11.Nf3 Be6 12.Nxe5 dxe5 13.Qe1 Qh4 14.f4 Qxe1
>  +-  (1.86)   Depth: 11/36   00:00:09  8589kN
>8...Nh7 9.Qd2 Bxe5 10.Nf3 Bxc3 11.Qxc3 Nf6 12.Bd4 Nbd7 13.0-0-0 c6 14.Qe3 Qe7
>15.e5 dxe5 16.Nxe5
>  +-  (1.95)   Depth: 12/37   00:00:15  14390kN
>8...Ng8!
>  +-  (1.95)   Depth: 12/37   00:00:19  18244kN
>8...Ng8 9.exd6 Bxc3+ 10.bxc3 cxd6 11.Bf4 Nf6 12.Bxd6 Be6 13.Bf3 Nc6 14.Ne2 Nd7
>15.0-0
>  +-  (1.86)   Depth: 13/47   00:00:40  39512kN
>8...Ng8 9.f4 Nc6 10.Nf3 Nge7 11.exd6 Bxc3+ 12.bxc3 cxd6 13.Qd3 Qa5 14.Nd4 0-0
>15.0-0
>  +-  (1.96)   Depth: 14/44   00:01:27  86010kN
>8...Nh7!
>  +-  (1.96)   Depth: 14/44   00:01:43  102280kN
>8...Nh7 9.Qd2 Bxe5 10.Nf3 Bxc3 11.Qxc3 Nf6 12.Bd4 Nbd7 13.0-0-0
>  +-  (1.96)   Depth: 14/44   00:01:59  118747kN
>
>8...Nh7!!. Fritz 9 thinks and plans like a GM. There is an old saying "A knight
>on the rim is dim", however a human master also has to know about the exceptions
>to the rules.
>
>Example 3:
>

[D]r1bqkbnr/pp3ppp/2npp3/1N6/4PB2/8/PPP2PPP/RN1QKB1R b KQkq - 0 6

>Analysis by Fritz 9:
>
>6...e5 7.Bg5 f6 8.Be3 a6 9.N5c3 Be6
>  ±  (1.13)   Depth: 7/21   00:00:00  60kN
>6...e5 7.Bg5 Nf6 8.Bc4 Qa5+ 9.Bd2 Qb6 10.N1c3 Be6
>  ±  (0.99)   Depth: 8/26   00:00:00  228kN
>6...e5--
>  ±  (1.27)   Depth: 9/28   00:00:00  406kN
>6...e5 7.Bg5 f6
>  ±  (1.27)   Depth: 9/31   00:00:00  479kN
>6...Nf6!
>  ±  (1.27)   Depth: 9/31   00:00:00  625kN
>6...Ne5!
>  ±  (1.27)   Depth: 9/31   00:00:01  1088kN
>6...Ne5!
>  ±  (1.11)   Depth: 9/31   00:00:01  1435kN
>6...Ne5!
>  ±  (0.80)   Depth: 9/31   00:00:02  2151kN
>6...Ne5 7.Bxe5 dxe5 8.Qxd8+ Kxd8 9.Nd2 a6 10.Nc3 Bb4 11.Nc4 Bxc3+ 12.bxc3 f6
>13.Nd6
>  ²  (0.65)   Depth: 9/31   00:00:02  2738kN
>6...Ne5 7.Bxe5 dxe5 8.Qxd8+ Kxd8 9.Nd2 a6 10.Nc3 Bb4 11.Nc4 Bxc3+ 12.bxc3 f6
>13.Rd1+ Bd7 14.Nd6
>  ±  (0.85)   Depth: 10/28   00:00:03  3587kN
>6...Ne5--
>  ±  (1.13)   Depth: 11/33   00:00:06  6849kN
>6...Ne5 7.N1a3 a6 8.Bxe5 dxe5 9.Qxd8+ Kxd8 10.0-0-0+ Ke7 11.Nd6
>  ±  (1.36)   Depth: 11/37   00:00:07  7153kN
>6...Nf6!
>  ±  (1.35)   Depth: 11/37   00:00:09  9327kN
>6...Nf6!
>  ±  (1.20)   Depth: 11/37   00:00:09  10147kN
>6...Nf6!
>  ±  (0.88)   Depth: 11/37   00:00:11  11833kN
>6...Nf6 7.Bxd6 Bxd6 8.Qxd6 Qxd6 9.Nxd6+ Ke7 10.Nb5 Rd8 11.N1c3 Nb4 12.Rc1 Kf8
>13.e5 Ng4 14.a3
>  ±  (0.96)   Depth: 12/34   00:00:15  16054kN
>6...Nf6 7.N1c3 e5 8.Bg5 a6 9.Na3 Be7 10.Bxf6 Bxf6 11.Bc4 0-0 12.0-0 Bg5 13.Qd5
>  ±  (0.80)   Depth: 13/34   00:00:29  32085kN
>6...Nf6 7.Bxd6 Bxd6 8.Qxd6 Qxd6 9.Nxd6+ Ke7 10.Nxc8+ Raxc8 11.Nc3 Rhd8 12.a3 Nd4
>13.Bd3 Ng4 14.h3 Ne5 15.0-0-0 Nxd3+
>  ±  (0.72)   Depth: 14/38   00:00:57  62931kN
>6...Nf6 7.N1c3 e5 8.Bg5 a6 9.Na3 Be7 10.Bxf6 Bxf6 11.Bc4 0-0 12.0-0 Bg5 13.Nd5
>b5
>  ²  (0.68)   Depth: 15/40   00:02:25  160300kN
>
>6...Nf6!!
>Again Fritz 9 avoids a typical computer mistake. 6...e5? would have been a very
>bad idea due to the winning move 7.Bg5!:
>
>Analysis by Fritz 9:
>
>7.Bg5 Nf6 8.Bc4 Qa5+ 9.Bd2 Qb6 10.N1c3 Be6
>  ±  (0.99)   Depth: 7/24   00:00:00  57kN
>7.Bg5!
>  ±  (1.27)   Depth: 8/27   00:00:00  181kN
>7.Bg5--
>  ±  (0.99)   Depth: 9/28   00:00:00  463kN
>7.Bg5 Nf6 8.Bc4
>  ±  (0.99)   Depth: 9/33   00:00:00  565kN
>7.Bg5 Nf6 8.Bc4 Be6 9.Bd5 Qb6 10.N1c3 Bg4 11.Bxc6+ Qxc6 12.f3
>  ±  (0.97)   Depth: 10/32   00:00:01  1414kN
>7.Bg5 Nf6 8.Bc4 Be6 9.Nd2 a6 10.Nc3 Be7 11.0-0 0-0 12.Qf3
>  ±  (1.01)   Depth: 11/35   00:00:03  3391kN
>7.Bg5 Nf6 8.Bc4 Be6 9.Nd2 a6 10.Nc3 Be7 11.0-0 0-0 12.Bxf6 Bxf6 13.Qh5
>  ±  (0.87)   Depth: 12/36   00:00:09  8469kN
>7.Bg5 Nf6 8.Bc4 Be6 9.Nd2 a6 10.Bxf6 gxf6 11.Bxe6 fxe6 12.Qh5+ Kd7 13.Nc3 Kc7
>14.0-0-0
>  ±  (0.86)   Depth: 13/40   00:00:21  21113kN
>7.Bg5 Nf6 8.Bc4 Be6 9.Bxf6 gxf6 10.N1a3 a6 11.Nc3 Rg8 12.0-0 Rg6 13.Qh5 Rh6
>14.Qf3
>  ±  (0.76)   Depth: 14/41   00:00:53  55282kN
>7.Bg5 Nf6 8.Bc4 Be6 9.Bxf6 gxf6 10.N1a3 Qa5+ 11.c3 0-0-0 12.Qb3 Kb8 13.Bxe6 fxe6
>14.Qxe6
>  ±  (0.75)   Depth: 15/44   00:02:18  146969kN
>
>The renowned tester Kurt Utzinger has sent us some typical games played by the
>new Fritz 9 in order to demonstrate the new human-like style:
>
>[Event "Fri9_Shr9  Ath 1.3/64  40'/40"]
>[Site "Zurich"]
>[Date "2005.09.28"]
>[Round "8"]
>[White "Shredder 9"]
>[Black "Fritz 9"]
>[Result "1-0"]
>[ECO "E91"]
>[PlyCount "65"]
>[EventDate "2005.??.??"]
>
>1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 O-O 5. e4 d6 6. Be2 c5 7. d5 Qb6 8. O-O
>Nbd7 9. Ng5 h6 10. Nf3 a6 11. Nh4 Qc7 12. f4 Nb6 13. Rb1 Bd7 14. b3 Nc8 15. Qc2
>Nb6 16. Bb2 Rfc8 17. Nd1 Nh7 18. Bxg7 Kxg7 19. Qc3+ Nf6 20. e5 Nbxd5 21. cxd5
>Nxd5 22. Qg3 dxe5 23. fxe5 Qc6 24. Bd3 Rf8 25. Be4 Qe6 26. Bf5 Qc6 27. e6 Bxe6
>28. Nxg6 Qd6 29. Ne5+ Kh8 30. Qh3 Kg8 31. Rf3 Bxf5 32. Qxf5 Kh8 33. Nxf7+ 1-0
>
>[Event "Fri9_Jun9  Ath 1.3/64  40'/40"]
>[Site "Zurich"]
>[Date "2005.10.02"]
>[Round "48"]
>[White "Junior 9"]
>[Black "Fritz 9"]
>[Result "1-0"]
>[ECO "E71"]
>[PlyCount "67"]
>[EventDate "2005.??.??"]
>
>1. c4 g6 2. e4 Bg7 3. d4 d6 4. Nc3 Nf6 5. h3 O-O 6. Be3 c5 7. d5 a5 8. Bd3 Qb6
>9. Na4 Qc7 10. Nf3 Bd7 11. Nc3 Qb6 12. Rb1 Na6 13. a3 Nh5 14. Bg5 Rfe8 15. Qd2
>Nc7 16. b3 Rf8 17. Bxe7 Rfe8 18. Bg5 f5 19. Kf1 Bxc3 20. Qxc3 fxe4 21. g4 Ng3+
>22. fxg3 exf3 23. Rh2 Rf8 24. Rf2 Ne8 25. Re1 a4 26. Re7 Qxb3 27. Qxb3 axb3 28.
>Rxd7 Rxa3 29. Rb2 Ra1+ 30. Rb1 Rxb1+ 31. Bxb1 b6 32. Rb7 Nf6 33. Kf2 b2 34. Bf4
>1-0
>
>[Event "Fri9_Tog II 10  Ath 1.3/64  40'/40"]
>[Site "Zurich"]
>[Date "2005.09.30"]
>[Round "43"]
>[White "Fritz 9"]
>[Black "Toga II 1.0"]
>[Result "0-1"]
>[ECO "D02"]
>[PlyCount "104"]
>[EventDate "2005.??.??"]
>
>1. g3 d5 2. Nf3 c6 3. b3 Bg4 4. Bg2 Nf6 5. O-O Nbd7 6. d4 e6 7. Bf4 Be7 8. h3
>Bh5 9. c4 O-O 10. Nc3 Bb4 11. Qd3 Bg6 12. Qe3 Qa5 13. Rac1 Ba3 14. Rce1 Nh5 15.
>Bg5 h6 16. Bh4 Rac8 17. Nb1 Bb4 18. Rc1 Qxa2 19. Nc3 Qxb3 20. Nxd5 Qxe3 21.
>Nxe3 Rfe8 22. c5 Bh7 23. Nc4 g5 24. Bxg5 hxg5 25. Nd6 f6 26. Nxb7 Rc7 27. Nd6
>Rb8 28. Rfd1 a5 29. e3 a4 30. Ra1 Bc3 31. Ra2 Bb1 32. Rxa4 Bc2 33. Rda1 Bxa1
>34. Rxa1 Bd3 35. Ra3 Be2 36. Nd2 e5 37. N2e4 Kf8 38. Nc3 Bd3 39. Na2 Bg6 40.
>Ra4 Rb1+ 41. Kh2 exd4 42. exd4 Rb2 43. Nb4 Nb8 44. Nc4 Rxf2 45. Kg1 Re2 46. Bf1
>Re1 47. Ra8 Rb7 48. Nxc6 Nxg3 49. Rxb8+ Rxb8 50. Nxb8 Rxf1+ 51. Kg2 Rc1 52. Ne3
>Ne2 0-1
>
>[Event "Fri9_Jun9  Ath 1.3/64  40'/40"]
>[Site "Zurich"]
>[Date "2005.10.01"]
>[Round "23"]
>[White "Fritz 9"]
>[Black "Junior 9"]
>[Result "0-1"]
>[ECO "B44"]
>[PlyCount "104"]
>[EventDate "2005.??.??"]
>
>1. Nf3 c5 2. e4 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nb5 d6 6. Bf4 e5 7. Bg5 Qxg5 8.
>Nc7+ Kd8 9. Nxa8 Bg4 10. f3 Nf6 11. fxg4 Qe3+ 12. Be2 Nxe4 13. Rf1 Be7 14. Rf3
>Qg1+ 15. Bf1 Nd4 16. Nc3 f5 17. gxf5 Bh4+ 18. g3 Ng5 19. Rf2 Nh3 20. Ne4 Nxf2
>21. Nxf2 Rf8 22. Qd3 Rxf5 23. O-O-O Rxf2 24. gxh4 Rxc2+ 25. Kb1 Qg4 26. h3 Qh5
>27. Rc1 Rxc1+ 28. Kxc1 Qf7 29. b3 Kc8 30. Bg2 g6 31. Qc3+ Kb8 32. Kd1 Qd7 33.
>Qc4 Qc8 34. Qxc8+ Kxc8 35. Bd5 Kb8 36. Bg8 Nf3 37. Bxh7 Nxh4 38. Kd2 Kxa8 39.
>Kc3 a5 40. b4 axb4+ 41. Kxb4 Ka7 42. Kc4 e4 43. Bg8 Nf5 44. Kc3 Ne7 45. Bb3 d5
>46. Kd4 Kb6 47. Ba4 Kc7 48. Ke5 e3 49. Bd1 Kc6 50. Kd4 Nf5+ 51. Kd3 Kc5 52. h4
>d4 0-1
>
>Order Fritz 9 online now: http://www.chessbase.com/shop/index.asp
>
>Michael



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