Bricabrac Making Progress

[Mike Sherwin]

Mostly the last couple of weeks have been spent finding and eliminating bugs. No new features have been added except some simple move ordering. It is still just basically a material searcher with piece square tables. Although there is also an experimental search reduction that I dub a "Feel Good Reduction". Here are two interesting games just played against TSCP. Unfortunately they ended in three fold repetitions because Bric, is well, just still a brick and does not understand draws yet. The first game the computers start playing at move 8 in a Modern Benoni. The second game I saddled Bric with a pawn less in a Stafford Gambit. [TimeControl "0+30"]

For being still just a brick, Bric did not do too bad!
[pgn][Event "Stafford.at"]
[Site "DESKTOP-HFVHK2B"]
[Date "2021.02.25"]
[Round "1"]
[White "Bricabrac"]
[Black "Tscp181"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[ECO "A70"]
[Opening "Benoni"]
[Time "17:52:23"]
[Variation "Classical, 8.Bd3"]
[WhiteElo "2200"]
[TimeControl "0+30"]
[Termination "normal"]
[PlyCount "121"]
[WhiteType "human"]
[BlackType "human"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8.
Bd3 {(f1d3) +0.90/22 29} Bg4 {(c8g4 e1g1 d8b6 c3a4 b6b4 a4c3 e8g8) -0.76/7
29} 9. Bf4 {(c1f4) +1.30/21 29} Qb6 {(d8b6 a1b1 b8d7 e1g1 e8g8 d3c4 f8e8)
-0.61/7 29} 10. Qb3 {(d1b3) +1.40/21 29} Qxb3 {(b6b3 a2b3 g4f3 g2f3 e8d7
c3b5 f6e8 b5a7 g7b2) -0.45/8 29} 11. axb3 {(a2b3) +1.90/24 30} Bxf3 {(g4f3
g2f3 e8d7 c3b5 f6e8 b5a7 g7b2 a1a5) -0.45/8 29} 12. gxf3 {(g2f3) +1.95/24
29} Kd7 {(e8d7 c3b5 f6e8 a1a7 a8a7 b5a7 g7b2 h1g1) -0.52/8 29} 13. O-O
{(e1g1) +1.85/21 29} Nh5 {(f6h5 f4g3 d7e7 a1a2 h5g3 h2g3 b8d7 f1c1) -0.27/8
29} 14. Be3 {(f4e3) +1.80/24 29} Ke7 {(d7e7 c3d1 a7a6 f3f4 h5f6 d1c3 b8d7)
-0.14/7 29} 15. Nb5 {(c3b5) +1.90/23 29} Nd7 {(b8d7 a1a7 a8a7 b5a7 g7b2
f3f4 b2d4 e3d2) -0.14/8 29} 16. Bg5+ {(e3g5) +1.95/24 29} f6 {(f7f6 g5e3
a7a6 b5c3 d7e5 d3e2 g6g5 f1c1 e7e8) +0.04/8 29} 17. Be3 {(g5e3) +1.90/27
29} a6 {(a7a6 b5c3 d7e5 d3e2 g6g5 f1c1 e7e8 a1a5) +0.04/8 29} 18. Nc7
{(b5c7) +2.05/27 29} Rag8 {(a8g8 a1a2 f6f5 e4f5 d7e5 d3e4 g6f5 e4f5 e5f3)
+0.13/8 29} 19. Rae1 {(a1e1) +1.80/24 29} Kd8 {(e7d8 c7e6 d8c8 e3d2 d7e5
d3e2 g6g5 f3f4 h5f4 e6f4 g5f4 d2f4) +0.19/8 29} 20. Ne6+ {(c7e6) +1.90/30
29} Kc8 {(d8c8 e1c1 f6f5 e6g7 g8g7 e3h6 g7e7 e4f5) +0.14/7 29} 21. Bd2
{(e3d2) +1.75/27 29} f5 {(f6f5 d2c3 d7e5 d3e2 e5f7 g1h1 f7h6 b3b4 f5e4
f3e4) +0.05/9 29} 22. Nxg7 {(e6g7) +1.90/26 29} Nxg7 {(h5g7 d2c3 f5f4 e1c1
b7b5 c1a1 c8b7 f1c1 h7h6) -0.10/9 29} 23. Bc4 {(d3c4) +1.80/28 29} h6
{(g8e8 b3b4 d7e5 c4e2 c5c4 e1c1 b7b5 f3f4) +0.38/8 29} 24. b4 {(b3b4)
+1.80/28 29} b5 {(b7b5 b4c5 d7c5 c4e2 g8e8 d2f4 c8d7 b2b4 c5b3) -0.02/9 29}
25. Be2 {(c4e2) +1.85/28 30} c4 {(c5c4 e1a1 d7b8 d2f4 g8d8 f1c1 g7h5 f4e3
h5f6) -0.02/9 29} 26. Ra1 {(e1a1) +1.80/28 29} Kb7 {(c8b7 a1a5 g7h5 d2e3
f5f4 e3d4 h5f6 f1c1) -0.04/8 29} 27. Bf4 {(d2f4) +1.50/24 29} Ne8 {(g7e8
a1a3 g8f8 f4e3 e8f6 e3f4 f6e8) 0.00/8 29} 28. Rad1 {(a1d1) +1.40/26 29} Rf8
{(d7f6 d1d4 g6g5 f4d2 e8c7 d2c3 b7c8 f1c1) +0.32/8 29} 29. Be3 {(f4e3)
+1.30/28 29} Ndf6 {(e8f6 e3f4 b7c7 d1d4 f8e8 f1a1 f5e4 a1a6) +0.54/8 29}
30. Rd4 {(d1d4) +1.30/28 30} Nc7 {(e8c7 e3f4 f8d8 e2d1 g6g5 f4e3 b7c8 d1c2)
+0.42/8 30} 31. Bd1 {(b2b3) +1.10/25 29} Kc8 {(b7c8 e3f4 f8d8 d1c2 c8d7
e4e5 d6e5 f4e5) +0.39/8 29} 32. Bd2 {(e3d2) +1.45/28 29} Re8 {(f8e8 d1c2
g6g5 f1e1 h6h5 b2b3 f5e4 f3e4) +0.46/8 29} 33. Bc2 {(d1c2) +1.25/28 29}
fxe4 {(g6g5 f1a1 c8d7 d2c3 h8f8 d4d1 f5e4 c3f6 f8f6 f3e4) +0.38/8 29} 34.
fxe4 {(f3e4) +1.50/28 29} Nd7 {(f6d7 d2f4 d7e5 f4e5 e8e5 f2f4 e5e7 f1c1)
+0.22/8 29} 35. b3 {(b2b3) +1.25/27 29} Nb6 {(d7b6 f2f4 h8f8 f1f3 f8f6 f3h3
h6h5 h3c3) +0.22/8 29} 36. Bf4 {(d2f4) +1.50/27 29} Kd7 {(c8d7 f1c1 h8h7
f4e3 d7d8 e3d2 e8e7 f2f4) +0.20/8 29} 37. h4 {(h2h4) +2.05/26 29} c3 {(c4c3
d4d1 b6c8 f4e3 h8g8 e3h6 g8h8 h6g5) +0.36/8 29} 38. Rdd1 {(d4d1) +2.55/27
29} Nba8 {(b6a8 f4e3 h8g8 e3h6 e8e5 f2f4 e5e7 d1c1) +0.18/8 29} 39. Bd3
{(c2d3) +2.80/28 29} g5 {(e8c8 d1c1 c7e8 f4e3 h8g8 e3h6 e8f6 h6f4) +0.01/8
29} 40. hxg5 {(h4g5) +2.85/30 29} hxg5 {(h6g5 f4g5 h8h3 f2f4 e8h8 g1f2 h3h2
f2e1 c3c2) -0.03/8 29} 41. Bxg5 {(f4g5) +2.65/30 29} Nxd5 {(a8b6 d1c1 e8g8
f2f4 c7d5 e4d5 b6d5 d3f5) -0.38/8 29} 42. exd5 {(e4d5) +3.50/30 29} Re5
{(e8e5 f2f4 e5d5 g5f6 h8g8 g1f2 g8c8 f2e3 c8e8 d3e4 d5d1 f1d1) -1.01/9 29}
43. f4 {(f2f4) +3.35/32 29} Rxd5 {(e5d5 f1f3 h8f8 f3g3 a8c7 d1c1 c7e6 c1c3
e6f4 g5f4 f8f4) -1.95/9 29} 44. Be4 {(d3e4) +3.35/29 29} Rxd1 {(d5d1 f1d1
d7e6 d1d3 c3c2 d3c3 d6d5 e4c2 d5d4 f4f5) -2.26/10 29} 45. Bf5+ {(e4f5)
+3.15/32 29} Kc6 {(d7c6 f1d1 d6d5 d1d3 d5d4 d3d4 a8b6 f5e4 c6c7 f4f5 h8h7)
-2.06/9 30} 46. Rxd1 {(f1d1) +3.35/32 29} d5 {(d6d5 d1d3 d5d4 d3d4 a8b6
f5e4 c6c7 f4f5 h8h3) -2.06/8 29} 47. Rd3 {(d1d3) +3.55/31 29} Kd6 {(c6d6
d3c3 h8f8 f5g4 f8g8 c3h3 g8g6 g4f5 g6g7) -2.32/9 29} 48. Rxc3 {(d3c3)
+3.95/32 29} Nb6 {(a8b6 g5f6 h8g8 g1f2 b6d7 f6d4 g8e8 f5d7 d6d7 f4f5)
-2.80/9 29} 49. Rc1 {(c3c1) +4.20/28 29} Rf8 {(h8f8 f5g6 f8c8 c1e1 c8c6
g6f7 c6c3 e1e6 d6c7 e6e7) -2.57/9 29} 50. Bh3 {(f5h3) +4.25/28 29} Rh8
{(f8h8 h3g2 h8c8 c1a1 c8a8 f4f5 d6e5 f5f6 b6d7) -2.63/9 29} 51. Bg2 {(h3g2)
+4.15/30 29} Rg8 {(h8g8 c1a1 g8a8 f4f5 d6e5 f5f6 e5e6 g1f2 e6e5) -2.83/9
29} 52. Bh4 {(g5h4) +4.15/27 29} Kd7 {(b6a8 g1f2 g8f8 h4g3 f8f6 g2f3 a8c7
f4f5) -2.70/8 29} 53. Ra1 {(c1a1) +4.70/28 29} Rg4 {(g8g4 a1a6 b6c8 h4g5
g4g3 a6a3 d5d4 g1f2 g3c3) -3.46/9 29} 54. Bf2 {(h4f2) +4.80/32 29} Nc8
{(b6c8 a1a6 c8e7 a6b6 g4f4 b6b5 d7e6 b5b6 e6e5 b4b5) -3.65/9 29} 55. Rxa6
{(a1a6) +5.00/31 29} Nd6 {(c8d6 a6b6 d7c7 f2c5 d6f5 b6b5 f5h4 c5d6 c7d6
b5d5) -3.72/9 29} 56. Kh2 {(g1h2) +4.90/29 29} Ne4 {(d6e4 f2e3 g4h4 g2h3
d7c7 h2g2 d5d4 a6a7 c7c6 e3d4 h4f4 h3e6) -3.77/9 29} 57. Be3 {(f2e3)
+4.90/31 30} Rh4+ {(g4h4 g2h3 d7c7 h2g2 h4h8 h3e6 e4f6 g2f3 h8h7 e3d4 c7b7)
-4.00/9 29} 58. Kg1 {(h2g1) +4.80/32 29} Rg4 {(h4g4 a6b6 e4c3 g1f2 d7c7
f2f3 g4g7 f4f5 c7d7) -3.78/9 29} 59. Kh2 {(g1h2) +4.95/28 29} Rh4+ {(g4h4)
0.00/12 29} 60. Kg1 {(h2g1) +4.80/32 29} Rg4 {(h4g4) 0.00/11 29} 61. Kh2
{(g1h2) +4.95/28 29 3-fold repetition} 1/2-1/2
[/pgn]

[pgn][Event "Computer chess game"]
[Site "DESKTOP-HFVHK2B"]
[Date "2021.02.25"]
[Round "?"]
[White "Tscp181"]
[Black "Bricabrac"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[ECO "C42"]
[Opening "Russian Game"]
[Time "19:41:36"]
[Variation "3.Nxe5"]
[WhiteElo "2200"]
[TimeControl "0+30"]
[Termination "normal"]
[PlyCount "75"]
[WhiteType "program"]
[BlackType "program"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. e5 {(e4e5 f6e4 d2d4 c8f5
d1f3 f5g6 c1e3 f8e7) +0.72/8 29} Nd7 {(f6d7) -1.45/24 29} 6. d4 {(d2d4 c6c5
f1b5 c5d4 d1d4 c7c5 d4d1) +0.96/7 29} c5 {(c6c5) -1.25/24 29} 7. Be3 {(c1e3
c5d4 e3d4 c7c5 d4c3 f8e7 e5e6 d7f6 d1d8 e7d8) +0.90/8 29} cxd4 {(c5d4)
-1.15/27 29} 8. Bxd4 {(e3d4 d8h4 f1e2 f8c5 d4c5 d7c5 e2b5 c7c6 b5d3)
+0.99/8 29} Bb4+ {(f8b4) -1.20/24 29} 9. c3 {(c2c3 b4f8 d1e2 d8e7 f2f4 c7c5
d4e3 f7f6) +1.07/7 29} Bf8 {(b4f8) -1.10/24 29} 10. Qh5 {(d1h5 g7g6 h5d1
f8g7 e5e6 d7e5 f1b5) +1.23/7 29} g6 {(g7g6) -1.30/24 29} 11. Qe2 {(h5e2
f8g7 e5e6 d7f6 d4f6 g7f6 e6f7 e8f7 b1d2) +1.21/8 29} c5 {(c7c5) -1.15/24
29} 12. e6 {(e5e6 c5d4 e6d7 e8d7 c3d4 f8b4 e1d1 d8g5 e2b5 g5b5 f1b5)
+1.52/8 29} cxd4 {(c5d4) -0.95/28 29} 13. exd7+ {(e6d7 e8d7 e2b5 d7c7 f1e2
f8g7 b5c4 c7b8 c4f7 d8f6 f7f6 g7f6) +0.93/8 29} Kxd7 {(e8d7) -1.15/28 29}
14. cxd4 {(e2b5 d7c7 f1e2 f8g7 b5c4 c7b8 c4f7 d8f6 f7f6 g7f6) +0.93/7 29}
Bg7 {(f8g7) -1.05/24 29} 15. Qe3 {(e2e3 d8b6 b1c3 b6b2 f1b5 d7d8 e1g1 c8e6)
+1.06/7 29} a6 {(a7a6) -0.85/24 29} 16. Qd2 {(f1e2 h8e8 e3h3 d7e7 h3h7 g7d4
b1c3 d4c3 b2c3) +0.95/7 29} Re8+ {(h8e8) -1.05/24 29} 17. Be2 {(f1e2 d7e6
d2e3 e6f6 e3d3 f6e7 d3a3 d8d6 d4d5 d6a3 b1a3 g7b2) +0.78/7 29} Ke6 {(d7e6)
-0.90/24 29} 18. Qe3+ {(d2e3 e6f6 e3f3 f6e7 b1c3 g7d4 e1c1 f7f5 h1e1)
+0.85/7 29} Kd6 {(e6d6) -0.80/27 29} 19. Qd3 {(e3d3 d6e7 d3a3 d8d6 a3d6
e7d6 b1c3 g7d4 e1c1) +0.82/7 29} Bf5 {(c8f5) -0.60/23 29} 20. Qa3+ {(d3a3
d6d7 a3b3 d7c8 d4d5 f5e4 b3h3 f7f5 h3h7 e4g2) +0.78/7 29} Kc7 {(d6c7)
-0.25/28 29} 21. Qb3 {(a3b3 c7b8 b3f7 g7d4 b1c3 d4c3 b2c3 h7h6) +0.45/7 29}
Kb8 {(c7b8) -0.30/24 29} 22. Qg3+ {(b3g3 d8c7 g3c7 b8c7 b1c3 g7d4 a1c1 c7b8
f2f4) +0.12/7 29} Ka7 {(b8a7) +0.65/28 29} 23. Nc3 {(b1c3 d8d4 e1g1 d4b6
e2c4 b6b2 a1c1 g7c3 c1c3) -0.25/7 29} Qxd4 {(d8d4) +0.45/22 29} 24. O-O
{(e1g1 d4b4 a1c1 g7c3 b2c3 b4a4 f1e1 a4a2) -0.62/7 29} Qb4 {(d4b4) +1.05/20
29} 25. Rac1 {(a1c1 g7c3 b2c3 b4a4 f1e1 a4a2 c1a1) -0.52/7 29} Qxb2 {(b4b2)
+0.90/22 29} 26. Bc4 {(e2c4 a8c8 c3a4 b2b4 c4f7 b4a4 f7e8 c8e8) -0.52/7 29}
Bh6 {(g7h6) +1.00/21 29} 27. f4 {(f2f4 h6g7 g1h1 a8c8 c3a4 b2b4 g3f2)
-0.58/7 29} Bg7 {(h6g7) +1.35/23 29} 28. Kh1 {(g1h1 g7d4 c3a4 b2b4 g3b3
b4b3 a2b3) -0.73/7 29} Rac8 {(a8c8) +1.25/20 29} 29. Na4 {(c3a4 b2f6 c4d5
f5e6 c1c8 e8c8 f1d1 a7b8) -0.76/8 29} Qf6 {(b2f6) +1.00/22 29} 30. Bd5
{(c4d5 f5e6 c1c8 e8c8 f1d1 c8c2 g3e3) -0.71/7 29} Be6 {(f5e6) +1.30/22 29}
31. Rxc8 {(c1c8 e8c8 d5e6 f7e6 f1b1 e6e5 a4b6 c8c2) -0.78/8 29} Rxc8
{(e8c8) +1.30/26 29} 32. Bxe6 {(d5e6 f6e6 g3f2 a7b8 f1d1 e6f5 a4b6 c8c2
b6d7) -0.95/8 29} Qxe6 {(f6e6) +1.25/27 29} 33. Qf2+ {(g3f2 a7b8 f1d1 e6f5
f2b6 f5c2 b6d6 c2c7 d6d2 f7f5) -0.99/8 29} Kb8 {(a7b8) +1.35/28 29} 34. Rd1
{(f1d1 c8c4 a4c5 g7d4 c5e6 d4f2 d1d8 b8a7 d8d2) -0.98/8 29} Qg4 {(e6g4)
+1.25/24 29} 35. Qd2 {(f2d2 c8c6 d1e1 c6e6 e1e6 g4e6 a4c5) -0.98/7 29} Qe6
{(g4e6) +1.30/24 29} 36. Qf2 {(d2f2) 0.00/8 29} Qg4 {(e6g4) +1.25/24 29}
37. Qd2 {(f2d2) 0.00/8 29} Qe6 {(g4e6) +1.30/24 29} 38. Qf2 {(d2f2) 0.00/8
29 3-fold repetition} 1/2-1/2
[/pgn]