BB+ wrote:Just now, I realise there was a "sign" versus "sine" confusion - I did indeed meant the former, as for negative x, you first want to negate it. In realtime, the graphs are OK, but for those who don't match TCEC 24 hours a day, eyeballing a graph from a decisive game in the post-mortem can often not reveal too much.
Junior had another nice win against Sjeng, after White was preferred as much as 1.00 by Sjeng (move 26).
[White "Sjeng"][Black "Junior 12.5"][Round "8.3"][Event "TCEC 3 Stage 2a"][Result "0-1"]
1. d4 Nf6 2. Nf3 e6 3. Bf4 c5 4. e3 cxd4 5. exd4 b6 6. Nbd2 Be7 7. h3 O-O 8. Bd3 Ba6 9. Bxa6 Nxa6 10. O-O b5 11. c3 Nc7 12. a4 Ncd5 13. Bg3 Nh5 14. Bh2 a6 15. Qb3 Qb6 16. Ra2 h6 17. Rfa1 b4 18. c4 Ndf4 19. Qe3 g5 20. h4 f5 21. Bxf4 Nxf4 22. g3 Nh3+ 23. Kh2 g4 24. Ne5 Qb7 25. Qxh6 Bf6 26. Rf1 Bxe5 27. dxe5 Rf7 28. Raa1 Raf8 29. Rae1 f4 30. Qg6+ Rg7 31. Qd3 Ng5 32. Qd4 Rf5 33. Rg1 Rh7 34. Rd1 a5 35. b3 Qa8 36. Rg2 Kh8 37. c5 Qg8 38. Rgg1 Rhf7 39. c6 dxc6 40. Rg2 Qh7 41. Qd8+ Rf8 42. Qd3 Qh6 43. Qd4 R5f7 44. Qd3 c5 45. Kh1 Rf5 46. Re1 Nh3 47. Ne4 Rxe5 48. Qb1 Qg7 49. Qd1 Rd5 50. Qb1 Qg6 51. Kh2 Qf5 52. Qc1 Rd4 53. Nxc5 e5 54. gxf4 Nxf4 55. Qe3 Nxg2 56. Kxg2 Rf6 57. Kg1 Qc2 58. Rc1 Rd1+ 59. Rxd1 Qxd1+ 60. Kh2 Qf3 61. Kg1 Qxe3 62. fxe3 Rf3 63. Nb7 Rxe3 64. Nxa5 e4 65. Kh2 Rc3 66. Nc4 Rxc4 67. bxc4 b3 68. a5 b2 69. a6 0-1
[White "Rybka 4.1"][Black "Junior 12.5"][Event "TCEC 3 Stage 2a"][Round "9.2"][Result "1-0"]1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 d6 5. Nc3 exd5 6. cxd5 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Re8 10. Bf4 Na6 11. Nd2 Nh5 12. Be3 Nc7 13. a4 b6 14. Nc4 Ba6 15. Qb3 f5 16. Bf3 Qd7 17. Rfd1 Nf6 18. Bf4 Bxc4 19. Qxc4 a6 20. Qb3 b5 21. h4 b4 22. Nb1 Ne4 23. Nd2 Be5 24. e3 Nxd2 25. Rxd2 Bxf4 26. exf4 h5 27. Be2 Qg7 28. a5 Qd7 29. Bc4 Nb5 30. Rd3 Nd4 31. Rxd4 cxd4 32. Qxb4 Kh7 33. Qb6 Qc8 34. Qc6 Ra7 35. b3 Qb8 36. Qa4 Qc8 37. Kg2 Ree7 38. Rd1 Qc5 39. Qa1 Qb4 40. Kf1 Qc3 41. Kg2 Re4 42. Rc1 Qd2 43. Rd1 Qb4 44. Bd3 Ree7 45. Bc4 Qc3 46. Rc1 Qxa1 47. Rxa1 Re4 48. Rb1 Kg7 49. Rc1 Rc7 50. Ra1 Rxc4 51. bxc4 d3 52. Rd1 Rxc4 53. Rxd3 Rc5 54. Rb3 Rxd5 55. Rb7+ Kh6 56. Rb6 Rxa5 57. Rxd6 Ra3 58. Rb6 Kh7 59. Kh3 a5 60. Rb7+ Kh8 61. Rb6 Kh7 62. Rb7+ Kh8 63. Ra7 a4 64. Ra6 Kh7 65. Ra7+ Kg8 66. Ra6 Kf7 67. Ra7+ Ke6 68. Ra6+ Kd5 69. Rxg6 Kc4 70. Rc6+ Kb5 71. Rh6 Rc3 72. Rxh5 Rc5 73. Rh7 Kb4 74. h5 a3 75. Re7 a2 76. Re1 Rc2 77. f3 Rc3 78. Kh4 Rxf3 79. h6 Re3 80. Ra1 Ka3 81. h7 Re8 82. Kg5 Rf8 83. Kg6 Rd8 84. Kxf5 *
But then, just as I came in, Rybka had jumped fairly rapidly from 0.00 to 2.96 in a rook ending against Junior (which was almost drawn previously due to lots of near-0.00 scores and shuffling). The first move where Rybka had a non-0.00 score was 72. Rxh5, after which Junior originally thought Black was better. The scores were both 0.00 from move 50 to 63, but then Junior favoured Black a bit after the a4 push, but moving the King up so as to support the a-pawn backfired in the end.
I went to bed before the Rybka-Junior game ended and I checked the position with a couple of engines (Shredder, and Rybka) and they were adamant that it was a draw. I love Junior but I have seen it blow many a win and/or draw because of some icky endgame play.
