Francesca 0.25 Released

[silentshark]

New version, available from www.silentshark.co.uk

From the README file..

Bugfix when using external book - could mess up castling status in a specific situation, meaning sometimes Francesca wouldn't think she could castle, when she could. Nasty. Very minor eval tweaks to passers. Minor tweak to aspiration window. Improved root node ordering (ditched the old idea about ordering moves depending on number of nodes searched). Some minor speed optimisations. Self play testing show improvement of about +48 ELO, so probably a bit less in the 'real world'.

[Gabor Szots]

New version, available from www.silentshark.co.uk

From the README file..

Bugfix when using external book - could mess up castling status in a specific situation, meaning sometimes Francesca wouldn't think she could castle, when she could. Nasty. Very minor eval tweaks to passers. Minor tweak to aspiration window. Improved root node ordering (ditched the old idea about ordering moves depending on number of nodes searched). Some minor speed optimisations. Self play testing show improvement of about +48 ELO, so probably a bit less in the 'real world'.

Thanks Tom. Hoping to have a chance to test it soon.

[silentshark]

New version, available from www.silentshark.co.uk

From the README file..

Bugfix when using external book - could mess up castling status in a specific situation, meaning sometimes Francesca wouldn't think she could castle, when she could. Nasty. Very minor eval tweaks to passers. Minor tweak to aspiration window. Improved root node ordering (ditched the old idea about ordering moves depending on number of nodes searched). Some minor speed optimisations. Self play testing show improvement of about +48 ELO, so probably a bit less in the 'real world'.

Thanks Tom. Hoping to have a chance to test it soon.

That would be great Thanks

[Gabor Szots]

Tom, I have just finished a tournament and submitted the games to our database. This was the last game:

[pgn][Event "Francesca MAD 0.25 64-bit - Jul 29"] [Site "Szentendre"] [Date "2019.08.02"] [Round "32"] [White "Twisted Logic 20090922 64-bit"] [Black "Francesca MAD 0.25 64-bit"] [Result "1/2-1/2"] [ECO "A80"] [Opening "Dutch"] [Time "20:23:33"] [Variation "2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 exf6 5.e3"] [TimeControl "40/120:40/120:40/120"] [PlyCount "199"] 1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 5. e3 Be6 6. Bd3 Nc6 {+0.30/21 5} 7. Qh5+ {-0.04/16 5} g6 {+0.55/22 3} 8. Qh3 {-0.19/17 7} Qd6 {+0.79/19 3} 9. Nge2 {-0.13/15 3} O-O-O {+0.70/22 4} 10. O-O {-0.17/15 3} Nb4 {+0.07/21 3} 11. Nf4 {-0.32/14 3} Nxd3 {+0.37/22 3} 12. Nxd3 {-0.35/15 3} Qc6 {+0.34/23 6} 13. Qh4 {-0.33/16 3} g5 {+0.39/24 3} 14. Qh5 {-0.30/16 3} Be7 {+0.35/24 4} 15. a4 {-0.31/16 3} Kb8 {+0.34/25 3} 16. a5 {-0.22/16 3} a6 {+0.34/24 9} 17. Na4 {-0.19/15 3} Qe8 {0.00/21 3} 18. Qf3 {+0.02/14 3} Qg6 {-0.02/22 4} 19. Nac5 {+0.31/16 3} Qf7 {-0.24/20 3} 20. Ra4 {+0.44/14 3} Bc8 {-0.50/20 7} 21. Rb4 {+0.44/14 3} Ka7 {-0.40/19 2} 22. Rb3 {+0.25/15 3} Bd6 {-0.30/20 3} 23. Na4 {+0.11/15 11} g4 {-0.02/19 3} 24. Qd1 {+0.24/15 4} Bd7 {+0.06/21 5} 25. Ndc5 {+0.03/17 5} Bb5 {+0.18/20 4} 26. Nc3 {+0.03/15 2} Bc6 {+0.22/20 4} 27. Qd3 {+0.19/14 2} f4 {+0.46/20 3} 28. Rc1 {-0.62/14 2} fxe3 {+0.79/20 2} 29. fxe3 {-0.70/14 2} Qe7 {+0.89/21 2} 30. Rf1 {-0.34/13 2} Rhe8 {+1.24/19 1} 31. Rd1 {-0.84/16 5} Bxc5 {+1.68/22 2} 32. dxc5 {-0.81/15 2} Qxc5 {+1.68/22 1} 33. Qd4 {-0.81/16 2} Qxd4 {+1.75/22 1} 34. Rxd4 {-0.82/16 2} f5 {+1.65/22 1} 35. Kf2 {-0.80/16 2} Re5 {+1.70/21 1} 36. Rd3 {-0.78/16 2} Rd6 {+1.70/18 1} 37. Kg3 {-0.62/15 3} Re8 {+1.03/18 1} 38. Rb4 {-0.46/15 2} Bd7 {+1.01/20 0} 39. Rbd4 {-0.46/16 1} c6 {+1.13/18 0} 40. Na4 {-0.51/16 1} Bc8 {+1.14/14 0} 41. Nc5 {-0.31/17 3} Rf6 {+1.05/26 7} 42. Rb3 {-0.39/16 7} Rf7 {+1.25/22 3} 43. Rdb4 {-0.39/17 3} h6 {+1.14/24 3} 44. Ra4 {-0.39/19 5} Rfe7 {+1.13/25 3} 45. Kf4 {-0.39/18 3} Rf7 {+1.13/25 9} 46. Kg3 {0.00/23 3} Rg7 {+1.04/25 2} 47. Kf4 {-0.38/17 3} Rge7 {+1.02/26 4} 48. Rd4 {-0.36/18 2} Re5 {+1.02/27 5} 49. Rd2 {-0.36/16 2} R8e7 {+1.01/29 3} 50. Rd4 {-0.21/19 2} h5 {+0.89/29 4} 51. h4 {-0.19/18 2} Re8 {+0.89/28 2} 52. g3 {-0.16/19 2} R8e7 {+0.62/27 3} 53. Ra4 {-0.17/19 3} Re8 {+0.62/30 6} 54. Rd4 {0.00/23 2} Ka8 {+0.62/29 2} 55. Rdd3 {-0.16/19 2} R5e7 {+0.64/25 3} 56. Kg5 {-0.16/16 2} f4 {+2.68/25 2} 57. exf4 {-1.09/17 2} Rf7 {+2.56/27 2} 58. Re3 {-1.02/17 2} Rg8+ {+2.21/29 2} 59. Kh6 {-1.06/18 2} Bf5 {+2.20/30 3} 60. Rxb7 {-1.03/17 2} Rxb7 {+2.59/30 3} 61. Nxb7 {-1.06/18 2} Kxb7 {+2.17/29 3} 62. Re7+ {-1.13/18 2} Kc8 {+2.40/30 1} 63. Ra7 {-1.10/18 2} Rg6+ {+2.36/27 2} 64. Kxh5 {-2.89/21 17} Bxc2 {+2.60/28 3} 65. f5 {-2.74/19 1} Bxf5 {+3.99/28 3} 66. Rxa6 {-2.97/18 1} Kb7 {+4.66/29 2} 67. Rb6+ {-2.64/17 1} Ka7 {+4.78/30 1} 68. Rb4 {-2.92/19 1} Rd6 {+4.77/29 2} 69. Kg5 {-1.77/14 1} d4 {+4.56/29 2} 70. Kxf5 {-2.46/21 7} d3 {+4.55/28 2} 71. Rf4 {-2.53/19 1} d2 {+3.90/28 1} 72. Rf1 {-2.63/19 1} d1=Q {+5.69/29 1} 73. Rxd1 {-3.07/18 1} Rxd1 {+6.22/25 1} 74. Kxg4 {-4.07/19 2} c5 {+6.97/24 1} 75. Kf3 {-5.20/19 2} Rd3+ {+7.60/23 1} 76. Kf4 {-5.30/18 0} Rb3 {+7.95/24 0} 77. Ke5 {-5.39/18 0} Rxg3 {+8.12/25 0} 78. Kd5 {-5.56/18 0} Rb3 {+8.12/28 0} 79. Kxc5 {-5.75/19 0} Rxb2 {+8.13/29 0} 80. Kc6 {-5.85/19 0} Ka6 {+8.27/23 0} 81. h5 {-6.02/22 3} Kxa5 {+40.10/38 7} 82. h6 {-6.12/25 3} Rb6+ 83. Kd5 {-6.08/15 3} Rxh6 84. Ke5 {-6.08/12 3} Kb4 85. Kd5 {-6.52/24 3} Rh5+ 86. Kd4 {-6.11/12 3} Rh2 87. Ke5 {-6.25/14 4} Rh5+ 88. Kd4 {0.00/110 3} Rc5 89. Ke4 {-6.24/15 7} Kc4 90. Ke3 {-6.54/16 2} Rh5 91. Ke4 {-6.25/14 2} Rd5 92. Ke3 {-M10/30 29} Rc5 93. Ke4 {-6.99/14 1} Ra5 94. Kf4 {-6.73/13 1} Rb5 95. Ke4 {-6.42/13 1} Kb4 96. Kd4 {-6.17/12 2} Rf5 97. Ke4 {-6.21/11 1} Rc5 98. Kd4 {-6.11/11 1} Rg5 99. Ke4 {-6.01/10 1} Rh5 100. Kd4 {0.00/108 1 3-fold repetition} 1/2-1/2 [/pgn]

What may have gone wrong?

[silentshark]

Tom, I have just finished a tournament and submitted the games to our database. This was the last game:

[pgn][Event "Francesca MAD 0.25 64-bit - Jul 29"] [Site "Szentendre"] [Date "2019.08.02"] [Round "32"] [White "Twisted Logic 20090922 64-bit"] [Black "Francesca MAD 0.25 64-bit"] [Result "1/2-1/2"] [ECO "A80"] [Opening "Dutch"] [Time "20:23:33"] [Variation "2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 exf6 5.e3"] [TimeControl "40/120:40/120:40/120"] [PlyCount "199"] 1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 5. e3 Be6 6. Bd3 Nc6 {+0.30/21 5} 7. Qh5+ {-0.04/16 5} g6 {+0.55/22 3} 8. Qh3 {-0.19/17 7} Qd6 {+0.79/19 3} 9. Nge2 {-0.13/15 3} O-O-O {+0.70/22 4} 10. O-O {-0.17/15 3} Nb4 {+0.07/21 3} 11. Nf4 {-0.32/14 3} Nxd3 {+0.37/22 3} 12. Nxd3 {-0.35/15 3} Qc6 {+0.34/23 6} 13. Qh4 {-0.33/16 3} g5 {+0.39/24 3} 14. Qh5 {-0.30/16 3} Be7 {+0.35/24 4} 15. a4 {-0.31/16 3} Kb8 {+0.34/25 3} 16. a5 {-0.22/16 3} a6 {+0.34/24 9} 17. Na4 {-0.19/15 3} Qe8 {0.00/21 3} 18. Qf3 {+0.02/14 3} Qg6 {-0.02/22 4} 19. Nac5 {+0.31/16 3} Qf7 {-0.24/20 3} 20. Ra4 {+0.44/14 3} Bc8 {-0.50/20 7} 21. Rb4 {+0.44/14 3} Ka7 {-0.40/19 2} 22. Rb3 {+0.25/15 3} Bd6 {-0.30/20 3} 23. Na4 {+0.11/15 11} g4 {-0.02/19 3} 24. Qd1 {+0.24/15 4} Bd7 {+0.06/21 5} 25. Ndc5 {+0.03/17 5} Bb5 {+0.18/20 4} 26. Nc3 {+0.03/15 2} Bc6 {+0.22/20 4} 27. Qd3 {+0.19/14 2} f4 {+0.46/20 3} 28. Rc1 {-0.62/14 2} fxe3 {+0.79/20 2} 29. fxe3 {-0.70/14 2} Qe7 {+0.89/21 2} 30. Rf1 {-0.34/13 2} Rhe8 {+1.24/19 1} 31. Rd1 {-0.84/16 5} Bxc5 {+1.68/22 2} 32. dxc5 {-0.81/15 2} Qxc5 {+1.68/22 1} 33. Qd4 {-0.81/16 2} Qxd4 {+1.75/22 1} 34. Rxd4 {-0.82/16 2} f5 {+1.65/22 1} 35. Kf2 {-0.80/16 2} Re5 {+1.70/21 1} 36. Rd3 {-0.78/16 2} Rd6 {+1.70/18 1} 37. Kg3 {-0.62/15 3} Re8 {+1.03/18 1} 38. Rb4 {-0.46/15 2} Bd7 {+1.01/20 0} 39. Rbd4 {-0.46/16 1} c6 {+1.13/18 0} 40. Na4 {-0.51/16 1} Bc8 {+1.14/14 0} 41. Nc5 {-0.31/17 3} Rf6 {+1.05/26 7} 42. Rb3 {-0.39/16 7} Rf7 {+1.25/22 3} 43. Rdb4 {-0.39/17 3} h6 {+1.14/24 3} 44. Ra4 {-0.39/19 5} Rfe7 {+1.13/25 3} 45. Kf4 {-0.39/18 3} Rf7 {+1.13/25 9} 46. Kg3 {0.00/23 3} Rg7 {+1.04/25 2} 47. Kf4 {-0.38/17 3} Rge7 {+1.02/26 4} 48. Rd4 {-0.36/18 2} Re5 {+1.02/27 5} 49. Rd2 {-0.36/16 2} R8e7 {+1.01/29 3} 50. Rd4 {-0.21/19 2} h5 {+0.89/29 4} 51. h4 {-0.19/18 2} Re8 {+0.89/28 2} 52. g3 {-0.16/19 2} R8e7 {+0.62/27 3} 53. Ra4 {-0.17/19 3} Re8 {+0.62/30 6} 54. Rd4 {0.00/23 2} Ka8 {+0.62/29 2} 55. Rdd3 {-0.16/19 2} R5e7 {+0.64/25 3} 56. Kg5 {-0.16/16 2} f4 {+2.68/25 2} 57. exf4 {-1.09/17 2} Rf7 {+2.56/27 2} 58. Re3 {-1.02/17 2} Rg8+ {+2.21/29 2} 59. Kh6 {-1.06/18 2} Bf5 {+2.20/30 3} 60. Rxb7 {-1.03/17 2} Rxb7 {+2.59/30 3} 61. Nxb7 {-1.06/18 2} Kxb7 {+2.17/29 3} 62. Re7+ {-1.13/18 2} Kc8 {+2.40/30 1} 63. Ra7 {-1.10/18 2} Rg6+ {+2.36/27 2} 64. Kxh5 {-2.89/21 17} Bxc2 {+2.60/28 3} 65. f5 {-2.74/19 1} Bxf5 {+3.99/28 3} 66. Rxa6 {-2.97/18 1} Kb7 {+4.66/29 2} 67. Rb6+ {-2.64/17 1} Ka7 {+4.78/30 1} 68. Rb4 {-2.92/19 1} Rd6 {+4.77/29 2} 69. Kg5 {-1.77/14 1} d4 {+4.56/29 2} 70. Kxf5 {-2.46/21 7} d3 {+4.55/28 2} 71. Rf4 {-2.53/19 1} d2 {+3.90/28 1} 72. Rf1 {-2.63/19 1} d1=Q {+5.69/29 1} 73. Rxd1 {-3.07/18 1} Rxd1 {+6.22/25 1} 74. Kxg4 {-4.07/19 2} c5 {+6.97/24 1} 75. Kf3 {-5.20/19 2} Rd3+ {+7.60/23 1} 76. Kf4 {-5.30/18 0} Rb3 {+7.95/24 0} 77. Ke5 {-5.39/18 0} Rxg3 {+8.12/25 0} 78. Kd5 {-5.56/18 0} Rb3 {+8.12/28 0} 79. Kxc5 {-5.75/19 0} Rxb2 {+8.13/29 0} 80. Kc6 {-5.85/19 0} Ka6 {+8.27/23 0} 81. h5 {-6.02/22 3} Kxa5 {+40.10/38 7} 82. h6 {-6.12/25 3} Rb6+ 83. Kd5 {-6.08/15 3} Rxh6 84. Ke5 {-6.08/12 3} Kb4 85. Kd5 {-6.52/24 3} Rh5+ 86. Kd4 {-6.11/12 3} Rh2 87. Ke5 {-6.25/14 4} Rh5+ 88. Kd4 {0.00/110 3} Rc5 89. Ke4 {-6.24/15 7} Kc4 90. Ke3 {-6.54/16 2} Rh5 91. Ke4 {-6.25/14 2} Rd5 92. Ke3 {-M10/30 29} Rc5 93. Ke4 {-6.99/14 1} Ra5 94. Kf4 {-6.73/13 1} Rb5 95. Ke4 {-6.42/13 1} Kb4 96. Kd4 {-6.17/12 2} Rf5 97. Ke4 {-6.21/11 1} Rc5 98. Kd4 {-6.11/11 1} Rg5 99. Ke4 {-6.01/10 1} Rh5 100. Kd4 {0.00/108 1 3-fold repetition} 1/2-1/2 [/pgn]

What may have gone wrong?

Hmmm... something not right here..

[voffka]

The position does not look like a draw: https://lichess.org/Wb0ZA8C3#197

According to tablebases on lichess (if you click on a book icon) it seems like black (Francheska) is wining. Is it a bug of cutechess-cli?

[carldaman]

The position does not look like a draw: https://lichess.org/Wb0ZA8C3#197

According to tablebases on lichess (if you click on a book icon) it seems like black (Francheska) is wining. Is it a bug of cutechess-cli?

Of course it's not a draw, as K+R vs K is a basic win. Does Francesca know how to win this ending?

[Guenther]

The position does not look like a draw: https://lichess.org/Wb0ZA8C3#197

According to tablebases on lichess (if you click on a book icon) it seems like black (Francheska) is wining. Is it a bug of cutechess-cli?

You missed the problem (ofc RK vs. K is winning). Francesca allowed a three time repetition in a won endgame.

[Kotlov]

Something wrong with 3-fold repetition.

[silentshark]

I hate issues like this. Can't reproduce the problem.. don't suppose there's a debug log from this game is there?