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Subject: Rebel12 PR beta9a passed pawn - 2 games against F8

Author: Werner Schuele

Date: 05:23:28 08/10/03


Hi,
I modified beta9 engine for a better handling of passed pawns. I repeated 2
games which are lost before with beta9.eng. Games are played 60 moves in 60 mins
eng eng under Chessbase on a AMD2000+. Both games now are won by Rebel with
beta9a engine:

[Event "Blitz:60' R12 PRB9, 60'/60+60'/60+60' [0.02;0.03]"]
[Site "?"]
[Date "2003.??.??"]
[Round "?"]
[White "Rebel 12 PRB9"]
[Black "Fritz 8"]
[ECO "E09"]
[Result "1-0"]

1. c4 {W=13.6 ply; 804kN/s B=14.4 ply; 925kN/s; 18.104
TBAs} Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. O-O O-O 6. Qc2
c6 7. d4 Nbd7 8. Nbd2 b6 9. e4 Bb7 10. e5 Ne8 11. cxd5 cxd5
12. Re1 Rc8 13. Qa4 {Beide letzter Buchzug} a6 { 0.03/14
175} 14. Nf1 { 0.02/15 203} Nc7 {(b6-b5) 0.06/13 55}
15. Qb3 {(Lc1-d2) 0.13/15 148} b5 { 0.12/14 58} 16. Bf4
{(h2-h3) 0.10/14 76} a5 {(Sd7-b6) 0.12/14 62} 17. Bd2
{(a2-a4) 0.12/14 129} a4 { -0.06/14 79} 18. Qd3 {(Db3-e3)
0.15/14 124} b4 { -0.09/14 79} 19. Rec1 {(Ta1-c1) 0.07/14
126} f6 {(Sd7-b8) -0.09/14 197} 20. exf6 { 0.24/13 94} Nxf6
{ -0.06/14 136} 21. Ne5 {(Ld2-f4) 0.31/13 105} Nd7 {
-0.13/12 53} 22. Nc6 { 0.43/14 106} Bxc6 { -0.06/13 57}
23. Rxc6 { 0.45/11 11} Nb8 {(e6-e5) 0.09/13 96} 24. Rc2 {
0.53/14 72} Nca6 {(Dd8-d7) 0.47/13 104} 25. Bh3 { 0.61/14
124} Qb6 { 0.56/13 58} 26. Re1 {(Tc2xc8) 0.78/13 46} Rxc2 {
0.41/13 63} 27. Bxe6+ { 0.79/14 67} Kh8 { 0.44/14 67}
28. Qxc2 { 0.77/12 11} Qxd4 { 0.53/13 96} 29. Re2 { 0.87/13
75} Nc5 {(Le7-f6) 0.69/13 82} 30. Be3 { 1.14/13 53} Nxe6
{(Dd4-c4) 1.06/14 55} 31. Bxd4 { 2.01/15 24} Nxd4 { 1.72/14
28} 32. Qd1 { 2.34/15 80} Nxe2+ { 2.16/15 113} 33. Qxe2 {
1.83/13 8} Nc6 {(Le7-c5) 2.12/14 53} 34. Qe6 { 2.61/14 61}
Rf6 { 2.47/15 83} 35. Qxd5 { 2.79/15 116} a3 {(Le7-f8)
2.56/14 71} 36. bxa3 { 3.10/15 99} bxa3 { 2.78/15 63}
37. Nd2 {(Sf1-e3) 2.92/14 74} Rd6 { 2.91/15 73} 38. Qf7 {
3.09/15 55} h6 { 3.03/15 63} 39. Nc4 {(Sd2-e4) 3.38/14 45}
Rf6 { 3.62/15 78} 40. Qe8+ { 3.50/15 84} Kh7 { 4.19/16 86}
41. Na5 {(Sc4-b6) 3.55/14 93} Nxa5 { 3.78/15 50} 42. Qxe7 {
3.37/14 21} Nc6 { 4.06/15 79} 43. Qxa3 { 3.73/13 77} Kg6
{(Sc6-e5) 4.22/14 98} 44. Qd3+ { 4.30/13 81} Kf7 { 4.56/14
74} 45. a4 { 4.62/13 162} Ke7 {(Kf7-g8) 4.56/13 49} 46. a5
{ 4.70/12 71} Nb8 {(Tf6-d6) 4.72/13 56} 47. Qe4+ { 5.02/12
73} Kd8 { 5.03/15 67} 48. Qh7 { 5.09/12 44} Nd7 {(Tf6-a6)
5.34/15 100} 49. Qxg7 { 5.25/12 72} Ra6 {(Kd8-c7) 5.47/14
77} 50. Qc3 { 5.32/13 79} Nb8 {(Ta6-d6) 5.69/14 104}
51. Qe5 {(f2-f4) 5.53/12 46} Kc8 {(Sb8-d7) 5.62/14 99}
52. f4 { 5.57/12 48} Rc6 { 6.19/14 42} 53. Qb5 {(g3-g4)
5.71/12 39} Kc7 {(Tc6-d6) 6.28/13 42} 54. f5 {(g3-g4)
6.05/12 110} Rc1+ { 6.44/13 45} 55. Kg2 { 6.19/11 57} Rc6
{(Tc1-c2+) 6.84/14 63} 56. Qe5+ { 6.93/11 55} Kc8 { 7.00/15
82} 57. Qh8+ { 7.82/12 69} Kc7 { 7.19/15 77} 58. f6 {
7.91/12 64} Rc2+ {(Sb8-d7) 7.41/14 75} 59. Kh3 { 8.29/12
60} Nd7 { 7.59/14 21} 60. f7 { 8.38/12 59} Rc6 { 7.66/12
11} 61. Qd4 { 9.91/13 61} h5 {(Tc6-d6) 9.69/13 60} 62. Qf4+
{ 10.67/12 54} Kd8 { 11.91/14 121} 63. f8=Q+ { 11.18/12 40}
Nxf8 { 11.84/11 10} 64. Qxf8+ { 11.16/10 11} Kd7 {(Kd8-c7)
12.41/13 54} 65. Qf5+ {(Kh3-h4) 11.75/12 58} Kd6 { 11.97/12
46} 66. Qxh5 {(Kh3-h4) 11.92/12 94} Rc5 {(Tc6-c7) 12.31/12
49} 67. Qg6+ { 16.92/12 82} Kd7 {(Kd6-d5) 12.66/12 60}
68. a6 { 16.42/12 76} Rc7 {adjud. Hier blieb Rebel 12
stehen und hat nicht weitergerechnet. 13.59/12 0} 1-0

[Event "Blitz:60' R12 PRB9, 60'/60+60'/60+60' [0.02;0.03]"]
[Site "?"]
[Date "2003.??.??"]
[Round "?"]
[White "Rebel 12 PRB9"]
[Black "Fritz 8"]
[ECO "E09"]
[Result "1-0"]

1. c4 {W=13.8 ply; 744kN/s B=14.5 ply; 875kN/s; 35.988
TBAs} Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. O-O O-O 6. Qc2
c6 7. d4 Nbd7 8. Nbd2 b6 9. e4 Bb7 10. e5 Ne8 11. cxd5 cxd5
12. Re1 Rc8 13. Qa4 {Beide letzter Buchzug} a6 { 0.03/14
174} 14. Nf1 { 0.02/15 204} Nc7 {(b6-b5) 0.06/13 55}
15. Qb3 {(Lc1-d2) 0.13/15 147} b5 { 0.12/14 59} 16. Bd2
{(h2-h3) 0.10/15 142} Nb6 { 0.09/15 76} 17. Bb4 { 0.07/15
148} Nc4 { 0.00/16 154} 18. Rac1 {(Lb4xe7) 0.09/13 71} Bxb4
{(a6-a5) -0.25/15 75} 19. Qxb4 { 0.04/12 11} a5 { -0.16/15
114} 20. Qb3 { 0.03/15 152} f5 {(Lb7-a6) 0.03/14 60}
21. exf6 { 0.20/12 70} Qxf6 {(g7xf6) 0.12/14 117} 22. Qc2
{(h2-h3) 0.10/13 61} b4 { -0.13/13 51} 23. b3 {(Sf1-e3)
0.08/13 59} Nd6 { -0.22/14 81} 24. Ne5 {(Dc2-b2) 0.07/14
77} Ncb5 { -0.50/13 54} 25. Qd2 { 0.03/13 59} Rxc1 {
-0.84/14 67} 26. Rxc1 { 0.06/12 25} Ne4 {(Df6-h6) -0.69/14
67} 27. Bxe4 { 0.48/14 81} dxe4 { -0.69/13 23} 28. Rc5 {
0.42/14 107} Nc3 { -0.75/13 53} 29. Ne3 { 0.41/13 66} Rd8
{(Lb7-a6) -0.50/13 69} 30. Kf1 {(Kg1-g2) 0.36/12 55} a4
{(Td8-a8) -0.75/13 179} 31. bxa4 { 0.67/13 83} Nxa4
{(Df6-e7) -0.06/13 294} 32. Ra5 { 0.56/14 65} Nc3 { 0.03/13
47} 33. a3 { 0.61/13 53} Qe7 { 0.12/13 82} 34. Nc2 {
0.65/13 97} Qc7 { 0.19/13 139} 35. axb4 { 0.43/14 81} Nb5 {
0.00/13 60} 36. Ke1 {(Kf1-g1) 0.47/13 67} Qb6 { 0.12/13 69}
37. Nc4 { 0.40/14 91} Nxd4 { 0.00/14 72} 38. Nxd4 { 0.26/13
50} Qxd4 { 0.00/14 25} 39. Ra7 {(Dd2xd4) 0.22/13 88} Qf6 {
-0.41/14 135} 40. Qb2 { 0.00/12 54} Qe7 {(Df6-f3) -0.34/13
66} 41. Ne3 { 0.52/13 85} Rd7 {(De7-c7) -0.22/14 112}
42. b5 { 0.61/13 42} Qc5 { -0.63/14 81} 43. Ra1 {(b5-b6)
0.33/12 64} Rf7 {(Dc5-h5) -0.50/12 44} 44. Rd1 { 0.46/13
100} h6 { -0.50/14 83} 45. h4 {(Td1-d8+) 0.42/12 97} Kh7 {
-0.66/13 47} 46. Rd2 {(b5-b6) 0.42/12 51} Bd5 {(Tf7-c7)
-0.34/13 98} 47. Rc2 {(b5-b6) 0.37/12 46} Qb6 {(Dc5-a7)
-0.50/13 56} 48. h5 { 0.32/12 56} Rf8 {(Db6-a5+) -0.53/13
63} 49. Qa3 {(Db2-b4) 0.29/12 56} Qd8 {(Tf8-f7) -0.28/13
107} 50. b6 { 0.45/12 78} Rf7 { -0.22/12 28} 51. Qa5 {
0.48/13 58} Qf6 {(Ld5-b7) 0.00/13 46} 52. Nxd5 { 0.36/12
76} exd5 { 0.34/13 49} 53. Qxd5 { 0.46/11 41} Qf3 { 0.00/13
45} 54. Qd4 { 0.43/12 79} Qh1+ { 0.31/12 32} 55. Kd2 {
0.34/11 72} Qg2 {(Dh1xh5) 0.00/12 29} 56. Kc3 {(Kd2-e2)
0.42/12 72} Qh1 { 0.53/12 70} 57. Kb2 { 0.69/11 54} Qf3 {
0.56/11 26} 58. Rc7 {(Kb2-b1) 0.58/11 43} Rf6 { 0.44/12 46}
59. g4 { 0.60/11 74} Qf4 {(Df3-e2+) 1.44/9 5} 60. Ka1 {
1.56/11 46} Qf3 {(e4-e3) 3.00/11 8} 61. b7 { 1.91/12 87}
Qa3+ { 3.50/14 101} 62. Kb1 { 1.56/3 0} Qb3+ { 3.62/14 121}
63. Kc1 { 1.85/13 50} Qa3+ { 3.84/14 94} 64. Qb2 { 3.01/13
68} Qxb2+ { 3.84/14 55} 65. Kxb2 { 2.44/11 2} Rb6+ {
4.91/17 48} 66. Kc3 { 4.89/18 92} Rb1 {(Tb6-b5) 5.41/18 43}
67. Kd4 { 4.93/17 52} Rb4+ {(Tb1-b6) 6.47/17 47} 68. Ke5 {
6.23/17 168} Rb1 {(Tb4-b3) 6.47/18 54} 69. Kxe4 { 6.03/16
46} Rb2 {(Tb1-b5) 6.81/18 74} 70. f4 { 7.05/16 53} Rb4+ {
7.12/17 70} 71. Kd5 { 7.42/15 36} Rb1 { 8.81/17 122} 72. f5
{(g4-g5) 11.17/16 59} Rd1+ { 12.78/15 66} 73. Ke4 {
10.89/16 110} Re1+ { 13.03/15 44} 74. Kd4 {(Ke4-d3)
10.32/14 35} Rd1+ { 13.03/16 75} 75. Ke3 { 13.01/15 40}
Re1+ {(Td1-b1) 11.06/15 51} 76. Kd2 {(Ke3-d3) 12.17/15 51}
Rb1 { 13.03/16 67} 77. f6 { 20.67/16 61} Kg8 {adjud.
24.53/15 52} 1-0

and here my beta9a engine:

[Personality = BETA9a.ENG]       * B1 + (fhr 2.00/4.00) + (Sel=6/5/4/3)++
[Pawn Value = 100]
[Knight Value = 100]
[Bishop Value = 100]
[Rook Value = 100]
[Queen Value = 101]
[King Safety =120]
[Mobility = 100]
[Pawn Structure = 95]
[Passed Pawns = 105]
[Pins = 100]
[Bishop Pair = 100]
[Chess Knowledge = 135]
[Attractiveness = 135]
[Attacking = 100]
[Strength of Play = 100]
[Draw Contempt Factor = 0.00]
[Selective Search = 79]
[Search Technique = NULLMOVE]

*
* PROVEN IMPROVEMENTS (do not change!)
*
[Pruning = MISC_25]             * New reduction
[Pruning = MISC_37]             * New extension
[Pruning = MISC_40]             * New reduction

*
* POSSIBLE IMPROVEMENTS (change the "? to "=" to activate an option)
*
[Pruning ? MISC_01]             * TREE: if (reduce & rd=0) goto tr76
[Pruning ? MISC_03]             * Move ordering (safe) (speedup 4%)
[Pruning ? MISC_21]             * Lazy Eval (tuning) (elo -10 / +10)
[Pruning = MISC_22]             * Somewhat more safe Selective Search
[Pruning ? MISC_29]             * Speedup (5%) (safe to somewhat risky)
[Pruning ? MISC_32]             * Single check extension (elo -10 / +10)
[Pruning ? MISC32_1.00]         * Margin is 1.00
[Pruning ? MISC32_MAX_2]        * Maxium allowed number
[Pruning ? MISC_38]             * New capture extension (elo -10 / +10)
[Pruning ? MISC_44]             * New endgame extension (elo -10 / +10)
[Pruning ? MISC_49]             * Speedup (6%) (safe to somewhat risky)
[Pruning ? MISC_50]             * Limit Reductions (safe)
[Pruning ? MISC_56]             * Nullmove extension (elo -5 / +5)
*
[Pruning = MISC_09]             * TR70 - FHR reduction (RD=1)
[Pruning = MISC_10]             * TR70 - FHR reduction (RD=2)
[Pruning = MISC09_2.00]         * 3.00/5.00   +5%
[Pruning = MISC10_4.00]         * 2.00/4.00  +11%
[Pruning = MISC_46]
[Pruning = M46_HASH_ON]

*
* SEARCH PARAMETER-1 (change the "? to "=" to activate an option)
* The below options are a replacement for the "Selective Search" parameter.
*
[Adjusted Selectivity MIDG = 6] * Maximum selective depth (midgame)
[Adjusted Selectivity END0 = 5] * Maximum selective depth (early endgame)
[Adjusted Selectivity END1 = 4] * Maximum selective depth (endgame)
[Adjusted Selectivity END2 = 3] * Maximum selective depth (simple endgame)

*
* SEARCH PARAMETER-2 (change the "? to "=" to activate an option)
*
[Minimum Selectivity MIDG ? 4]  * Minimum brute force depth (midgame)
[Minimum Selectivity END0 ? 4]  * Minimum brute force depth (early endgame)
[Minimum Selectivity END1 ? 4]  * Minimum brute force depth (endgame)
[Minimum Selectivity END2 ? 4]  * Minimum brute force depth (simple endgame)

*
[ANTI-GM = OFF]
[EVALUATION = SMART]            * proven improvement, do not change.
[Extensions (remaining)= 3]
[Extensions (checks)= 0]
[Extensions (captures)= 0]




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