Benjamin 1.1 for the GRL

Discussion of computer chess matches and engine tournaments.

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Rebel
Posts: 7478
Joined: Thu Aug 18, 2011 12:04 pm
Full name: Ed Schröder

Re: Benjamin 1.1 for the GRL

Post by Rebel »

lkaufman wrote: ↑Sun Oct 10, 2021 7:31 am I have come to the conclusion that Benjamin 1.1 is perhaps the best substitute for Magnus Carlsen, both playing at a standard time control like 40/2 hours or 2 hours plus one minute, for any tests one might want to make, on an average I7. I concluded above that Rebel Century would earn a bit over 2700 fide under those conditions. Benjamin 1.1 is 183 elo higher on ccrl blitz, but elo gains contract with more time and vs humans, so it would probably gain perhaps 2/3 of this, which puts it close to 2850, Carlsen’s appr. Rating. Why not use a similarly rated new engine? It might be much better or worse vs humans, but Benjamin is an improvement of Rebel century so likely similarly improved vs any opponent.
Playing Magnus, chance of a life time.

I agree with your calculations, result will be unclear, but close anyway.
90% of coding is debugging, the other 10% is writing bugs.
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Uri Blass
Posts: 11153
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Benjamin 1.1 for the GRL

Post by Uri Blass »

lkaufman wrote: ↑Sun Oct 10, 2021 7:31 am I have come to the conclusion that Benjamin 1.1 is perhaps the best substitute for Magnus Carlsen, both playing at a standard time control like 40/2 hours or 2 hours plus one minute, for any tests one might want to make, on an average I7. I concluded above that Rebel Century would earn a bit over 2700 fide under those conditions. Benjamin 1.1 is 183 elo higher on ccrl blitz, but elo gains contract with more time and vs humans, so it would probably gain perhaps 2/3 of this, which puts it close to 2850, Carlsen’s appr. Rating. Why not use a similarly rated new engine? It might be much better or worse vs humans, but Benjamin is an improvement of Rebel century so likely similarly improved vs any opponent.
At 1+1 time control I found that stockfish that is not supposed to be good at knight handicap can also win against Benjamin in part of the games.

[pgn][Event "Chess Tournament3"]
[Date "2021.10.10"]
[Round "1"]
[White "Stockfish 260921"]
[Black "Benjamin 1.1"]
[Result "1-0"]
[TimeControl "depth: 20"]
[Time "10:47:36"]
[Board "3"]
[Termination "mate"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[SetUp "1"]

1. b3 {End of opening} e5 {-3.23/15 2853 5197349} 2. Bb2 {-8.38/24 2523 3308876} e4 {-3.21/14 1331 3422131}
3. e3 {-7.62/21 1053 1362558} d5 {-3.31/14 2581 7532376} 4. c4 {-7.09/19 1078 1359846} Nc6 {-3.23/14 3038 9084484}
5. cxd5 {-7.07/21 1586 2048217} Qxd5 {-3.39/11 492 1343117} 6. Ne2 {-7.38/28 13654 17942653} Bg4 {-3.34/15 2871 6758953}
7. Rc1 {-6.92/25 6086 8001021} Rd8 {-3.57/14 1660 4056988} 8. Nf4 {-6.69/24 3769 5094320} Qa5 {-3.91/15 1819 5656395}
9. Be2 {-6.78/23 1871 2584424} Bxe2 {-3.86/15 2247 5789536} 10. Qxe2 {-6.61/21 1916 2703050} Nf6 {-3.54/15 2188 6376339}
11. Bxf6 {-7.15/26 15376 21684795} gxf6 {-3.32/10 186 448997} 12. b4 {-6.79/22 1880 2562661} Bxb4 {-4.48/15 2144 4900910}
13. O-O {-7.11/21 1572 2147855} Ne5 {-4.41/14 1503 4192474} 14. Rfd1 {-7.23/25 11461 15600393} O-O {-4.37/15 1734 4569145}
15. Rb1 {-7.38/25 7929 11472228} c5 {-4.15/15 2401 6913070} 16. Qh5 {-6.21/17 1115 1532270} Rxd2 {-3.10/13 1296 2802915}
17. Rxd2 {-3.93/20 601 797196} Bxd2 {-3.68/12 300 880280} 18. Qh6 {-4.66/20 711 971887} Qxa2 {-1.94/17 8018 17442820}
19. Rf1 {-2.62/22 624 868014} Ng4 {-2.21/15 2092 4550147} 20. Qh4 {-3.50/21 1226 1692359} Nxf2 {-1.94/14 3611 10469513}
21. Qxf2 {-3.57/17 475 686921} Qb2 {-2.10/15 1054 3046602} 22. Nd5 {-2.58/20 619 841952} Bc3 {-2.84/15 1067 3528719}
23. Qg3+ {-3.64/24 3872 5453894} Kh8 {-3.01/7 59 52850} 24. Qh4 {-3.76/21 225 331991} Be5 {-3.18/15 1623 5339359}
25. g3 {-2.94/19 546 730998} Rd8 {-3.43/15 1326 4075233} 26. Qh6 {-2.92/20 297 385386} b5 {-3.22/16 1113 3317729}
27. Rf2 {-2.30/23 559 766169} Qa1+ {-2.71/18 1541 5118883} 28. Rf1 {-2.25/22 506 724101} Qa6 {-2.67/16 1861 6315950}
29. Nxf6 {-2.28/22 778 1123332} Bxf6 {-2.52/16 2512 8628929} 30. Rxf6 {-1.98/20 529 771272} Qb7 {-2.65/14 999 3217446}
31. Rf5 {-2.29/24 1646 2406874} Qe7 {-2.51/15 1697 5620448} 32. Qh5 {-2.91/25 985 1439240} Qd6 {-2.17/14 1082 2720449}
33. Qxf7 {-1.60/19 544 791099} a6 {-2.17/13 975 2983911} 34. Qa7 {-0.89/21 555 810419} c4 {-1.80/15 1532 3863761}
35. Rf7 {+0.00/29 545 809377} Qh6 {-1.80/15 1149 3722487} 36. Qe7 {+0.00/35 657 1052434} Qxe3+ {-0.71/14 1972 3254882}
37. Rf2 {+0.00/37 885 1367677} Qd4 {-0.15/16 4296 9953532} 38. Kg2 {+0.00/39 793 1239556} h6 {-0.12/14 942 2569219}
39. Rf7 {+5.19/21 1132 2673096} Qd2+ {+0.25/15 1407 3834877} 40. Kh3 {+5.27/18 632 1492529} Qd7+ {+0.87/16 1198 5569348}
41. Qxd7 {+5.38/19 683 1682313} Rxd7 {+0.92/10 133 472719} 42. Rxd7 {+5.53/20 716 1877483} a5 {+1.71/16 1462 5421959}
43. Kg4 {+6.24/19 931 2552218} b4 {+2.53/17 1044 4339234} 44. Kf5 {+7.84/20 786 2456679} Kg8 {+0.92/7 46 25545}
45. Kxe4 {+8.53/20 756 2388240} a4 {+5.81/18 1558 7839821} 46. Kd4 {+8.81/32 768 2162620} b3 {+6.03/18 1209 6560620}
47. Kxc4 {+55.09/30 815 2680629} b2 {+6.73/17 1449 8415259} 48. Rb7 {+56.68/32 982 3688778} a3 {+6.94/18 895 4349362}
49. Kc3 {+60.58/32 959 3131918} Kf8 {+8.50/18 2250 10202435} 50. Kc2 {+64.19/32 835 3375408} Kg8 {+7.67/18 2196 14120252}
51. h4 {M+22/38 2462 11358582} Kf8 {+9.73/18 1108 6249610} 52. h5 {M+16/37 588 2449658} Ke8 {+10.72/20 864 4979672}
53. Rb6 {M+14/40 1457 4463527} Kf7 {+15.40/17 884 4682775} 54. Rxh6 {M+12/40 970 3179057} Kg7 {+17.12/18 1681 7525950}
55. Ra6 {M+11/43 709 2572569} Kf7 {+24.14/17 2213 10889861} 56. h6 {M+9/44 841 3245115} a2 {+23.52/16 2018 11864497}
57. Kxb2 {M+8/55 767 2925943} Kg8 {+327.57/15 1365 4193327} 58. Ra7 {M+6/96 768 3679135} Kh8 {+327.57/10 44 59295}
59. g4 {M+5/245 550 3174512} Kg8 {+327.59/8 43 5548} 60. g5 {M+4/245 84 468538} Kh8 {+327.63/5 45 1219}
61. g6 {M+3/245 18 47394} a1=Q+ {+327.65/3 41 167} 62. Kxa1 {M+2/245 16 1714} Kg8 {+327.67/2 28 469}
63. Ra8# {M+1/245 16 4410} 1-0

[/pgn]

[pgn]
[Event "Chess Tournament3"]
[Date "2021.10.10"]
[Round "1"]
[White "Stockfish 260921"]
[Black "Benjamin 1.1"]
[Result "1-0"]
[TimeControl "depth: 20"]
[Time "10:47:36"]
[Board "7"]
[Termination "mate"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[SetUp "1"]

1. d3 {End of opening} e5 {-3.37/15 3190 6022520} 2. Nf3 {-8.29/22 2253 3125601} Nc6 {-3.36/15 2408 7037342}
3. e4 {-8.30/23 1441 2019636} d5 {-3.56/14 2100 6124723} 4. exd5 {-8.00/24 1675 2342073} Qxd5 {-3.54/10 374 937605}
5. Be2 {-7.76/22 1138 1606460} Bf5 {-3.53/13 1442 2896032} 6. O-O {-7.69/19 1520 2108306} Be7 {-3.49/14 3037 9136909}
7. b4 {-7.61/24 4370 6192078} Bxb4 {-4.01/14 2300 6419095} 8. Rb1 {-7.46/21 4177 5768271} Qxa2 {-4.38/14 1379 3840504}
9. Bg5 {-6.61/21 4007 5514811} f6 {-4.63/14 1305 3899342} 10. Be3 {-6.61/21 1178 1681742} Nge7 {-4.70/15 1863 5393743}
11. Nh4 {-6.85/20 1912 2663097} Be6 {-4.76/14 2208 6572011} 12. c4 {-7.38/22 2711 3918491} O-O {-4.93/16 1893 4965024}
13. Ra1 {-3.14/24 1614 2072388} Qb2 {-4.76/17 1342 4761465} 14. Rb1 {-3.02/26 1497 1931737} Qa3 {-1.65/15 1380 2665605}
15. Ra1 {-3.10/27 2427 3211811} Qc3 {-1.83/16 1674 5381600} 16. Rc1 {-3.23/24 3120 4093372} Qxc1 {-2.02/15 1246 4002680}
17. Qxc1 {-3.13/24 1953 2596331} Rad8 {-1.56/14 1465 3833465} 18. f4 {-1.44/21 1824 2225906} Nd4 {-1.70/14 1642 5195609}
19. Bd1 {-1.59/23 1579 1985300} Nef5 {-1.83/14 1436 3967849} 20. Bxd4 {-1.46/25 3343 4349411} Rxd4 {-1.57/11 382 874732}
21. Bg4 {+0.00/21 1123 1441155} g6 {-1.19/16 2524 5924032} 22. Nxf5 {+0.00/27 5121 6638125} gxf5 {-0.87/12 395 1172976}
23. Be2 {+0.00/28 1461 1893187} e4 {-0.88/14 1310 3146434} 24. dxe4 {+0.00/28 2300 2980024} Bc5 {-0.86/15 1880 4092273}
25. Kh1 {+0.00/30 1856 2442923} fxe4 {-0.98/16 1842 6123894} 26. Rd1 {+0.00/31 1391 1813645} Rfd8 {-1.36/16 1926 6602152}
27. Rxd4 {+0.00/32 2880 3782163} Rxd4 {-1.18/12 291 827521} 28. f5 {+0.00/34 1424 1930910} Bf7 {-1.54/17 1865 6169878}
29. Qh6 {+0.00/32 1636 2249813} Bxc4 {-2.70/16 1264 4343680} 30. Bxc4+ {+0.00/33 1488 2191099} Rxc4 {-2.66/8 47 35002}
31. g4 {+0.00/36 7875 11580501} Bd4 {-2.28/16 1525 4561646} 32. Qf4 {+0.00/28 962 1321808} Be5 {-2.35/15 1685 5496644}
33. Qe3 {+0.00/30 1382 1939892} b5 {-2.19/14 1628 4307374} 34. g5 {+0.00/28 1498 2079423} Kg7 {-2.85/14 1615 5601426}
35. Qa3 {+0.00/27 1709 2543885} b4 {-1.42/14 2145 4368492} 36. Qa4 {+3.99/19 1502 2389141} c6 {-1.00/14 2605 8520945}
37. Qxa7+ {+6.00/23 2371 4718695} Kf8 {+3.64/15 1313 3093413} 38. g6 {+6.10/24 1375 2897352} Rc1+ {+3.95/16 1048 3862626}
39. Kg2 {+6.39/25 1853 4025563} Rc2+ {+3.91/15 1046 3195652} 40. Kf1 {+6.55/26 1447 3204887} hxg6 {+4.42/17 2452 7584358}
41. fxg6 {+6.72/25 2355 5457014} Ke8 {+4.50/17 1976 6876475} 42. Qf7+ {+7.09/19 1148 2753849} Kd8 {+3.14/7 36 14842}
43. g7 {+7.17/20 1225 2830304} Rc1+ {+4.37/17 1753 7336231} 44. Ke2 {+7.23/19 1132 2638391} Rg1 {+4.33/17 1262 4703501}
45. h4 {+7.38/19 1330 3147973} c5 {+4.61/16 1662 4628604} 46. h5 {+7.56/19 1095 2620835} Bd4 {+4.92/15 1256 3393206}
47. g8=Q+ {+8.75/18 1187 2780356} Rxg8 {+4.95/7 39 12138} 48. Qxg8+ {+8.93/20 1147 2634952} Kc7 {+6.05/15 1575 7090990}
49. Qe6 {+9.96/22 1649 3981737} f5 {+6.80/14 1043 4143249} 50. h6 {+10.60/20 1020 2480341} b3 {+7.21/14 2115 9312332}
51. Qxb3 {+12.08/19 1027 2665168} Kd6 {+8.63/15 3036 13023241} 52. h7 {+60.04/22 1077 3057423} Be5 {+8.69/15 1359 5504752}
53. Qb8+ {M+30/29 1107 3390196} Kd5 {+9.66/16 1528 7838595} 54. Qxe5+ {M+15/36 1260 3597828} Kxe5 {+9.73/16 309 1597310}
55. h8=Q+ {M+13/36 1031 3118989} Kf4 {+10.84/16 1764 8509246} 56. Qc3 {M+9/38 1922 6357677} c4 {+10.91/16 1202 7049862}
57. Kf2 {M+8/41 591 2050813} Kg4 {+327.47/15 1151 5642564} 58. Qg7+ {M+5/116 855 4272308} Kh4 {+10.61/12 166 794794}
59. Ke3 {M+4/245 260 1682930} Kh3 {+327.45/13 311 1486871} 60. Qg1 {M+3/245 20 21256} c3 {+327.65/3 39 2577}
61. Kf4 {M+2/245 20 6194} c2 {+327.67/1 38 7} 62. Qg3# {M+1/245 17 6163} 1-0
[/pgn]

To be fair Stockfish lost the match 16-3
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lkaufman
Posts: 6284
Joined: Sun Jan 10, 2010 6:15 am
Location: Maryland USA
Full name: Larry Kaufman

Re: Benjamin 1.1 for the GRL

Post by lkaufman »

Uri Blass wrote: ↑Sun Oct 10, 2021 11:14 am
lkaufman wrote: ↑Sun Oct 10, 2021 7:31 am I have come to the conclusion that Benjamin 1.1 is perhaps the best substitute for Magnus Carlsen, both playing at a standard time control like 40/2 hours or 2 hours plus one minute, for any tests one might want to make, on an average I7. I concluded above that Rebel Century would earn a bit over 2700 fide under those conditions. Benjamin 1.1 is 183 elo higher on ccrl blitz, but elo gains contract with more time and vs humans, so it would probably gain perhaps 2/3 of this, which puts it close to 2850, Carlsen’s appr. Rating. Why not use a similarly rated new engine? It might be much better or worse vs humans, but Benjamin is an improvement of Rebel century so likely similarly improved vs any opponent.
At 1+1 time control I found that stockfish that is not supposed to be good at knight handicap can also win against Benjamin in part of the games.

[pgn][Event "Chess Tournament3"]
[Date "2021.10.10"]
[Round "1"]
[White "Stockfish 260921"]
[Black "Benjamin 1.1"]
[Result "1-0"]
[TimeControl "depth: 20"]
[Time "10:47:36"]
[Board "3"]
[Termination "mate"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[SetUp "1"]

1. b3 {End of opening} e5 {-3.23/15 2853 5197349} 2. Bb2 {-8.38/24 2523 3308876} e4 {-3.21/14 1331 3422131}
3. e3 {-7.62/21 1053 1362558} d5 {-3.31/14 2581 7532376} 4. c4 {-7.09/19 1078 1359846} Nc6 {-3.23/14 3038 9084484}
5. cxd5 {-7.07/21 1586 2048217} Qxd5 {-3.39/11 492 1343117} 6. Ne2 {-7.38/28 13654 17942653} Bg4 {-3.34/15 2871 6758953}
7. Rc1 {-6.92/25 6086 8001021} Rd8 {-3.57/14 1660 4056988} 8. Nf4 {-6.69/24 3769 5094320} Qa5 {-3.91/15 1819 5656395}
9. Be2 {-6.78/23 1871 2584424} Bxe2 {-3.86/15 2247 5789536} 10. Qxe2 {-6.61/21 1916 2703050} Nf6 {-3.54/15 2188 6376339}
11. Bxf6 {-7.15/26 15376 21684795} gxf6 {-3.32/10 186 448997} 12. b4 {-6.79/22 1880 2562661} Bxb4 {-4.48/15 2144 4900910}
13. O-O {-7.11/21 1572 2147855} Ne5 {-4.41/14 1503 4192474} 14. Rfd1 {-7.23/25 11461 15600393} O-O {-4.37/15 1734 4569145}
15. Rb1 {-7.38/25 7929 11472228} c5 {-4.15/15 2401 6913070} 16. Qh5 {-6.21/17 1115 1532270} Rxd2 {-3.10/13 1296 2802915}
17. Rxd2 {-3.93/20 601 797196} Bxd2 {-3.68/12 300 880280} 18. Qh6 {-4.66/20 711 971887} Qxa2 {-1.94/17 8018 17442820}
19. Rf1 {-2.62/22 624 868014} Ng4 {-2.21/15 2092 4550147} 20. Qh4 {-3.50/21 1226 1692359} Nxf2 {-1.94/14 3611 10469513}
21. Qxf2 {-3.57/17 475 686921} Qb2 {-2.10/15 1054 3046602} 22. Nd5 {-2.58/20 619 841952} Bc3 {-2.84/15 1067 3528719}
23. Qg3+ {-3.64/24 3872 5453894} Kh8 {-3.01/7 59 52850} 24. Qh4 {-3.76/21 225 331991} Be5 {-3.18/15 1623 5339359}
25. g3 {-2.94/19 546 730998} Rd8 {-3.43/15 1326 4075233} 26. Qh6 {-2.92/20 297 385386} b5 {-3.22/16 1113 3317729}
27. Rf2 {-2.30/23 559 766169} Qa1+ {-2.71/18 1541 5118883} 28. Rf1 {-2.25/22 506 724101} Qa6 {-2.67/16 1861 6315950}
29. Nxf6 {-2.28/22 778 1123332} Bxf6 {-2.52/16 2512 8628929} 30. Rxf6 {-1.98/20 529 771272} Qb7 {-2.65/14 999 3217446}
31. Rf5 {-2.29/24 1646 2406874} Qe7 {-2.51/15 1697 5620448} 32. Qh5 {-2.91/25 985 1439240} Qd6 {-2.17/14 1082 2720449}
33. Qxf7 {-1.60/19 544 791099} a6 {-2.17/13 975 2983911} 34. Qa7 {-0.89/21 555 810419} c4 {-1.80/15 1532 3863761}
35. Rf7 {+0.00/29 545 809377} Qh6 {-1.80/15 1149 3722487} 36. Qe7 {+0.00/35 657 1052434} Qxe3+ {-0.71/14 1972 3254882}
37. Rf2 {+0.00/37 885 1367677} Qd4 {-0.15/16 4296 9953532} 38. Kg2 {+0.00/39 793 1239556} h6 {-0.12/14 942 2569219}
39. Rf7 {+5.19/21 1132 2673096} Qd2+ {+0.25/15 1407 3834877} 40. Kh3 {+5.27/18 632 1492529} Qd7+ {+0.87/16 1198 5569348}
41. Qxd7 {+5.38/19 683 1682313} Rxd7 {+0.92/10 133 472719} 42. Rxd7 {+5.53/20 716 1877483} a5 {+1.71/16 1462 5421959}
43. Kg4 {+6.24/19 931 2552218} b4 {+2.53/17 1044 4339234} 44. Kf5 {+7.84/20 786 2456679} Kg8 {+0.92/7 46 25545}
45. Kxe4 {+8.53/20 756 2388240} a4 {+5.81/18 1558 7839821} 46. Kd4 {+8.81/32 768 2162620} b3 {+6.03/18 1209 6560620}
47. Kxc4 {+55.09/30 815 2680629} b2 {+6.73/17 1449 8415259} 48. Rb7 {+56.68/32 982 3688778} a3 {+6.94/18 895 4349362}
49. Kc3 {+60.58/32 959 3131918} Kf8 {+8.50/18 2250 10202435} 50. Kc2 {+64.19/32 835 3375408} Kg8 {+7.67/18 2196 14120252}
51. h4 {M+22/38 2462 11358582} Kf8 {+9.73/18 1108 6249610} 52. h5 {M+16/37 588 2449658} Ke8 {+10.72/20 864 4979672}
53. Rb6 {M+14/40 1457 4463527} Kf7 {+15.40/17 884 4682775} 54. Rxh6 {M+12/40 970 3179057} Kg7 {+17.12/18 1681 7525950}
55. Ra6 {M+11/43 709 2572569} Kf7 {+24.14/17 2213 10889861} 56. h6 {M+9/44 841 3245115} a2 {+23.52/16 2018 11864497}
57. Kxb2 {M+8/55 767 2925943} Kg8 {+327.57/15 1365 4193327} 58. Ra7 {M+6/96 768 3679135} Kh8 {+327.57/10 44 59295}
59. g4 {M+5/245 550 3174512} Kg8 {+327.59/8 43 5548} 60. g5 {M+4/245 84 468538} Kh8 {+327.63/5 45 1219}
61. g6 {M+3/245 18 47394} a1=Q+ {+327.65/3 41 167} 62. Kxa1 {M+2/245 16 1714} Kg8 {+327.67/2 28 469}
63. Ra8# {M+1/245 16 4410} 1-0

[/pgn]

[pgn]
[Event "Chess Tournament3"]
[Date "2021.10.10"]
[Round "1"]
[White "Stockfish 260921"]
[Black "Benjamin 1.1"]
[Result "1-0"]
[TimeControl "depth: 20"]
[Time "10:47:36"]
[Board "7"]
[Termination "mate"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[SetUp "1"]

1. d3 {End of opening} e5 {-3.37/15 3190 6022520} 2. Nf3 {-8.29/22 2253 3125601} Nc6 {-3.36/15 2408 7037342}
3. e4 {-8.30/23 1441 2019636} d5 {-3.56/14 2100 6124723} 4. exd5 {-8.00/24 1675 2342073} Qxd5 {-3.54/10 374 937605}
5. Be2 {-7.76/22 1138 1606460} Bf5 {-3.53/13 1442 2896032} 6. O-O {-7.69/19 1520 2108306} Be7 {-3.49/14 3037 9136909}
7. b4 {-7.61/24 4370 6192078} Bxb4 {-4.01/14 2300 6419095} 8. Rb1 {-7.46/21 4177 5768271} Qxa2 {-4.38/14 1379 3840504}
9. Bg5 {-6.61/21 4007 5514811} f6 {-4.63/14 1305 3899342} 10. Be3 {-6.61/21 1178 1681742} Nge7 {-4.70/15 1863 5393743}
11. Nh4 {-6.85/20 1912 2663097} Be6 {-4.76/14 2208 6572011} 12. c4 {-7.38/22 2711 3918491} O-O {-4.93/16 1893 4965024}
13. Ra1 {-3.14/24 1614 2072388} Qb2 {-4.76/17 1342 4761465} 14. Rb1 {-3.02/26 1497 1931737} Qa3 {-1.65/15 1380 2665605}
15. Ra1 {-3.10/27 2427 3211811} Qc3 {-1.83/16 1674 5381600} 16. Rc1 {-3.23/24 3120 4093372} Qxc1 {-2.02/15 1246 4002680}
17. Qxc1 {-3.13/24 1953 2596331} Rad8 {-1.56/14 1465 3833465} 18. f4 {-1.44/21 1824 2225906} Nd4 {-1.70/14 1642 5195609}
19. Bd1 {-1.59/23 1579 1985300} Nef5 {-1.83/14 1436 3967849} 20. Bxd4 {-1.46/25 3343 4349411} Rxd4 {-1.57/11 382 874732}
21. Bg4 {+0.00/21 1123 1441155} g6 {-1.19/16 2524 5924032} 22. Nxf5 {+0.00/27 5121 6638125} gxf5 {-0.87/12 395 1172976}
23. Be2 {+0.00/28 1461 1893187} e4 {-0.88/14 1310 3146434} 24. dxe4 {+0.00/28 2300 2980024} Bc5 {-0.86/15 1880 4092273}
25. Kh1 {+0.00/30 1856 2442923} fxe4 {-0.98/16 1842 6123894} 26. Rd1 {+0.00/31 1391 1813645} Rfd8 {-1.36/16 1926 6602152}
27. Rxd4 {+0.00/32 2880 3782163} Rxd4 {-1.18/12 291 827521} 28. f5 {+0.00/34 1424 1930910} Bf7 {-1.54/17 1865 6169878}
29. Qh6 {+0.00/32 1636 2249813} Bxc4 {-2.70/16 1264 4343680} 30. Bxc4+ {+0.00/33 1488 2191099} Rxc4 {-2.66/8 47 35002}
31. g4 {+0.00/36 7875 11580501} Bd4 {-2.28/16 1525 4561646} 32. Qf4 {+0.00/28 962 1321808} Be5 {-2.35/15 1685 5496644}
33. Qe3 {+0.00/30 1382 1939892} b5 {-2.19/14 1628 4307374} 34. g5 {+0.00/28 1498 2079423} Kg7 {-2.85/14 1615 5601426}
35. Qa3 {+0.00/27 1709 2543885} b4 {-1.42/14 2145 4368492} 36. Qa4 {+3.99/19 1502 2389141} c6 {-1.00/14 2605 8520945}
37. Qxa7+ {+6.00/23 2371 4718695} Kf8 {+3.64/15 1313 3093413} 38. g6 {+6.10/24 1375 2897352} Rc1+ {+3.95/16 1048 3862626}
39. Kg2 {+6.39/25 1853 4025563} Rc2+ {+3.91/15 1046 3195652} 40. Kf1 {+6.55/26 1447 3204887} hxg6 {+4.42/17 2452 7584358}
41. fxg6 {+6.72/25 2355 5457014} Ke8 {+4.50/17 1976 6876475} 42. Qf7+ {+7.09/19 1148 2753849} Kd8 {+3.14/7 36 14842}
43. g7 {+7.17/20 1225 2830304} Rc1+ {+4.37/17 1753 7336231} 44. Ke2 {+7.23/19 1132 2638391} Rg1 {+4.33/17 1262 4703501}
45. h4 {+7.38/19 1330 3147973} c5 {+4.61/16 1662 4628604} 46. h5 {+7.56/19 1095 2620835} Bd4 {+4.92/15 1256 3393206}
47. g8=Q+ {+8.75/18 1187 2780356} Rxg8 {+4.95/7 39 12138} 48. Qxg8+ {+8.93/20 1147 2634952} Kc7 {+6.05/15 1575 7090990}
49. Qe6 {+9.96/22 1649 3981737} f5 {+6.80/14 1043 4143249} 50. h6 {+10.60/20 1020 2480341} b3 {+7.21/14 2115 9312332}
51. Qxb3 {+12.08/19 1027 2665168} Kd6 {+8.63/15 3036 13023241} 52. h7 {+60.04/22 1077 3057423} Be5 {+8.69/15 1359 5504752}
53. Qb8+ {M+30/29 1107 3390196} Kd5 {+9.66/16 1528 7838595} 54. Qxe5+ {M+15/36 1260 3597828} Kxe5 {+9.73/16 309 1597310}
55. h8=Q+ {M+13/36 1031 3118989} Kf4 {+10.84/16 1764 8509246} 56. Qc3 {M+9/38 1922 6357677} c4 {+10.91/16 1202 7049862}
57. Kf2 {M+8/41 591 2050813} Kg4 {+327.47/15 1151 5642564} 58. Qg7+ {M+5/116 855 4272308} Kh4 {+10.61/12 166 794794}
59. Ke3 {M+4/245 260 1682930} Kh3 {+327.45/13 311 1486871} 60. Qg1 {M+3/245 20 21256} c3 {+327.65/3 39 2577}
61. Kf4 {M+2/245 20 6194} c2 {+327.67/1 38 7} 62. Qg3# {M+1/245 17 6163} 1-0
[/pgn]

To be fair Stockfish lost the match 16-3
I think that Dragon 2.5 or 2.5.1 would make a much better score giving Ben knight odds at 1’ + 1”, especially with Contempt = 100, but still lose the match. I think that Dragon would win such a match from Carlsen, since he would get crushed by Ben even up at bullet.
Komodo rules!
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lkaufman
Posts: 6284
Joined: Sun Jan 10, 2010 6:15 am
Location: Maryland USA
Full name: Larry Kaufman

Re: Benjamin 1.1 for the GRL

Post by lkaufman »

Uri Blass wrote: ↑Sun Oct 10, 2021 11:14 am
lkaufman wrote: ↑Sun Oct 10, 2021 7:31 am I have come to the conclusion that Benjamin 1.1 is perhaps the best substitute for Magnus Carlsen, both playing at a standard time control like 40/2 hours or 2 hours plus one minute, for any tests one might want to make, on an average I7. I concluded above that Rebel Century would earn a bit over 2700 fide under those conditions. Benjamin 1.1 is 183 elo higher on ccrl blitz, but elo gains contract with more time and vs humans, so it would probably gain perhaps 2/3 of this, which puts it close to 2850, Carlsen’s appr. Rating. Why not use a similarly rated new engine? It might be much better or worse vs humans, but Benjamin is an improvement of Rebel century so likely similarly improved vs any opponent.
At 1+1 time control I found that stockfish that is not supposed to be good at knight handicap can also win against Benjamin in part of the games.

[pgn][Event "Chess Tournament3"]
[Date "2021.10.10"]
[Round "1"]
[White "Stockfish 260921"]
[Black "Benjamin 1.1"]
[Result "1-0"]
[TimeControl "depth: 20"]
[Time "10:47:36"]
[Board "3"]
[Termination "mate"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[SetUp "1"]

1. b3 {End of opening} e5 {-3.23/15 2853 5197349} 2. Bb2 {-8.38/24 2523 3308876} e4 {-3.21/14 1331 3422131}
3. e3 {-7.62/21 1053 1362558} d5 {-3.31/14 2581 7532376} 4. c4 {-7.09/19 1078 1359846} Nc6 {-3.23/14 3038 9084484}
5. cxd5 {-7.07/21 1586 2048217} Qxd5 {-3.39/11 492 1343117} 6. Ne2 {-7.38/28 13654 17942653} Bg4 {-3.34/15 2871 6758953}
7. Rc1 {-6.92/25 6086 8001021} Rd8 {-3.57/14 1660 4056988} 8. Nf4 {-6.69/24 3769 5094320} Qa5 {-3.91/15 1819 5656395}
9. Be2 {-6.78/23 1871 2584424} Bxe2 {-3.86/15 2247 5789536} 10. Qxe2 {-6.61/21 1916 2703050} Nf6 {-3.54/15 2188 6376339}
11. Bxf6 {-7.15/26 15376 21684795} gxf6 {-3.32/10 186 448997} 12. b4 {-6.79/22 1880 2562661} Bxb4 {-4.48/15 2144 4900910}
13. O-O {-7.11/21 1572 2147855} Ne5 {-4.41/14 1503 4192474} 14. Rfd1 {-7.23/25 11461 15600393} O-O {-4.37/15 1734 4569145}
15. Rb1 {-7.38/25 7929 11472228} c5 {-4.15/15 2401 6913070} 16. Qh5 {-6.21/17 1115 1532270} Rxd2 {-3.10/13 1296 2802915}
17. Rxd2 {-3.93/20 601 797196} Bxd2 {-3.68/12 300 880280} 18. Qh6 {-4.66/20 711 971887} Qxa2 {-1.94/17 8018 17442820}
19. Rf1 {-2.62/22 624 868014} Ng4 {-2.21/15 2092 4550147} 20. Qh4 {-3.50/21 1226 1692359} Nxf2 {-1.94/14 3611 10469513}
21. Qxf2 {-3.57/17 475 686921} Qb2 {-2.10/15 1054 3046602} 22. Nd5 {-2.58/20 619 841952} Bc3 {-2.84/15 1067 3528719}
23. Qg3+ {-3.64/24 3872 5453894} Kh8 {-3.01/7 59 52850} 24. Qh4 {-3.76/21 225 331991} Be5 {-3.18/15 1623 5339359}
25. g3 {-2.94/19 546 730998} Rd8 {-3.43/15 1326 4075233} 26. Qh6 {-2.92/20 297 385386} b5 {-3.22/16 1113 3317729}
27. Rf2 {-2.30/23 559 766169} Qa1+ {-2.71/18 1541 5118883} 28. Rf1 {-2.25/22 506 724101} Qa6 {-2.67/16 1861 6315950}
29. Nxf6 {-2.28/22 778 1123332} Bxf6 {-2.52/16 2512 8628929} 30. Rxf6 {-1.98/20 529 771272} Qb7 {-2.65/14 999 3217446}
31. Rf5 {-2.29/24 1646 2406874} Qe7 {-2.51/15 1697 5620448} 32. Qh5 {-2.91/25 985 1439240} Qd6 {-2.17/14 1082 2720449}
33. Qxf7 {-1.60/19 544 791099} a6 {-2.17/13 975 2983911} 34. Qa7 {-0.89/21 555 810419} c4 {-1.80/15 1532 3863761}
35. Rf7 {+0.00/29 545 809377} Qh6 {-1.80/15 1149 3722487} 36. Qe7 {+0.00/35 657 1052434} Qxe3+ {-0.71/14 1972 3254882}
37. Rf2 {+0.00/37 885 1367677} Qd4 {-0.15/16 4296 9953532} 38. Kg2 {+0.00/39 793 1239556} h6 {-0.12/14 942 2569219}
39. Rf7 {+5.19/21 1132 2673096} Qd2+ {+0.25/15 1407 3834877} 40. Kh3 {+5.27/18 632 1492529} Qd7+ {+0.87/16 1198 5569348}
41. Qxd7 {+5.38/19 683 1682313} Rxd7 {+0.92/10 133 472719} 42. Rxd7 {+5.53/20 716 1877483} a5 {+1.71/16 1462 5421959}
43. Kg4 {+6.24/19 931 2552218} b4 {+2.53/17 1044 4339234} 44. Kf5 {+7.84/20 786 2456679} Kg8 {+0.92/7 46 25545}
45. Kxe4 {+8.53/20 756 2388240} a4 {+5.81/18 1558 7839821} 46. Kd4 {+8.81/32 768 2162620} b3 {+6.03/18 1209 6560620}
47. Kxc4 {+55.09/30 815 2680629} b2 {+6.73/17 1449 8415259} 48. Rb7 {+56.68/32 982 3688778} a3 {+6.94/18 895 4349362}
49. Kc3 {+60.58/32 959 3131918} Kf8 {+8.50/18 2250 10202435} 50. Kc2 {+64.19/32 835 3375408} Kg8 {+7.67/18 2196 14120252}
51. h4 {M+22/38 2462 11358582} Kf8 {+9.73/18 1108 6249610} 52. h5 {M+16/37 588 2449658} Ke8 {+10.72/20 864 4979672}
53. Rb6 {M+14/40 1457 4463527} Kf7 {+15.40/17 884 4682775} 54. Rxh6 {M+12/40 970 3179057} Kg7 {+17.12/18 1681 7525950}
55. Ra6 {M+11/43 709 2572569} Kf7 {+24.14/17 2213 10889861} 56. h6 {M+9/44 841 3245115} a2 {+23.52/16 2018 11864497}
57. Kxb2 {M+8/55 767 2925943} Kg8 {+327.57/15 1365 4193327} 58. Ra7 {M+6/96 768 3679135} Kh8 {+327.57/10 44 59295}
59. g4 {M+5/245 550 3174512} Kg8 {+327.59/8 43 5548} 60. g5 {M+4/245 84 468538} Kh8 {+327.63/5 45 1219}
61. g6 {M+3/245 18 47394} a1=Q+ {+327.65/3 41 167} 62. Kxa1 {M+2/245 16 1714} Kg8 {+327.67/2 28 469}
63. Ra8# {M+1/245 16 4410} 1-0

[/pgn]

[pgn]
[Event "Chess Tournament3"]
[Date "2021.10.10"]
[Round "1"]
[White "Stockfish 260921"]
[Black "Benjamin 1.1"]
[Result "1-0"]
[TimeControl "depth: 20"]
[Time "10:47:36"]
[Board "7"]
[Termination "mate"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[SetUp "1"]

1. d3 {End of opening} e5 {-3.37/15 3190 6022520} 2. Nf3 {-8.29/22 2253 3125601} Nc6 {-3.36/15 2408 7037342}
3. e4 {-8.30/23 1441 2019636} d5 {-3.56/14 2100 6124723} 4. exd5 {-8.00/24 1675 2342073} Qxd5 {-3.54/10 374 937605}
5. Be2 {-7.76/22 1138 1606460} Bf5 {-3.53/13 1442 2896032} 6. O-O {-7.69/19 1520 2108306} Be7 {-3.49/14 3037 9136909}
7. b4 {-7.61/24 4370 6192078} Bxb4 {-4.01/14 2300 6419095} 8. Rb1 {-7.46/21 4177 5768271} Qxa2 {-4.38/14 1379 3840504}
9. Bg5 {-6.61/21 4007 5514811} f6 {-4.63/14 1305 3899342} 10. Be3 {-6.61/21 1178 1681742} Nge7 {-4.70/15 1863 5393743}
11. Nh4 {-6.85/20 1912 2663097} Be6 {-4.76/14 2208 6572011} 12. c4 {-7.38/22 2711 3918491} O-O {-4.93/16 1893 4965024}
13. Ra1 {-3.14/24 1614 2072388} Qb2 {-4.76/17 1342 4761465} 14. Rb1 {-3.02/26 1497 1931737} Qa3 {-1.65/15 1380 2665605}
15. Ra1 {-3.10/27 2427 3211811} Qc3 {-1.83/16 1674 5381600} 16. Rc1 {-3.23/24 3120 4093372} Qxc1 {-2.02/15 1246 4002680}
17. Qxc1 {-3.13/24 1953 2596331} Rad8 {-1.56/14 1465 3833465} 18. f4 {-1.44/21 1824 2225906} Nd4 {-1.70/14 1642 5195609}
19. Bd1 {-1.59/23 1579 1985300} Nef5 {-1.83/14 1436 3967849} 20. Bxd4 {-1.46/25 3343 4349411} Rxd4 {-1.57/11 382 874732}
21. Bg4 {+0.00/21 1123 1441155} g6 {-1.19/16 2524 5924032} 22. Nxf5 {+0.00/27 5121 6638125} gxf5 {-0.87/12 395 1172976}
23. Be2 {+0.00/28 1461 1893187} e4 {-0.88/14 1310 3146434} 24. dxe4 {+0.00/28 2300 2980024} Bc5 {-0.86/15 1880 4092273}
25. Kh1 {+0.00/30 1856 2442923} fxe4 {-0.98/16 1842 6123894} 26. Rd1 {+0.00/31 1391 1813645} Rfd8 {-1.36/16 1926 6602152}
27. Rxd4 {+0.00/32 2880 3782163} Rxd4 {-1.18/12 291 827521} 28. f5 {+0.00/34 1424 1930910} Bf7 {-1.54/17 1865 6169878}
29. Qh6 {+0.00/32 1636 2249813} Bxc4 {-2.70/16 1264 4343680} 30. Bxc4+ {+0.00/33 1488 2191099} Rxc4 {-2.66/8 47 35002}
31. g4 {+0.00/36 7875 11580501} Bd4 {-2.28/16 1525 4561646} 32. Qf4 {+0.00/28 962 1321808} Be5 {-2.35/15 1685 5496644}
33. Qe3 {+0.00/30 1382 1939892} b5 {-2.19/14 1628 4307374} 34. g5 {+0.00/28 1498 2079423} Kg7 {-2.85/14 1615 5601426}
35. Qa3 {+0.00/27 1709 2543885} b4 {-1.42/14 2145 4368492} 36. Qa4 {+3.99/19 1502 2389141} c6 {-1.00/14 2605 8520945}
37. Qxa7+ {+6.00/23 2371 4718695} Kf8 {+3.64/15 1313 3093413} 38. g6 {+6.10/24 1375 2897352} Rc1+ {+3.95/16 1048 3862626}
39. Kg2 {+6.39/25 1853 4025563} Rc2+ {+3.91/15 1046 3195652} 40. Kf1 {+6.55/26 1447 3204887} hxg6 {+4.42/17 2452 7584358}
41. fxg6 {+6.72/25 2355 5457014} Ke8 {+4.50/17 1976 6876475} 42. Qf7+ {+7.09/19 1148 2753849} Kd8 {+3.14/7 36 14842}
43. g7 {+7.17/20 1225 2830304} Rc1+ {+4.37/17 1753 7336231} 44. Ke2 {+7.23/19 1132 2638391} Rg1 {+4.33/17 1262 4703501}
45. h4 {+7.38/19 1330 3147973} c5 {+4.61/16 1662 4628604} 46. h5 {+7.56/19 1095 2620835} Bd4 {+4.92/15 1256 3393206}
47. g8=Q+ {+8.75/18 1187 2780356} Rxg8 {+4.95/7 39 12138} 48. Qxg8+ {+8.93/20 1147 2634952} Kc7 {+6.05/15 1575 7090990}
49. Qe6 {+9.96/22 1649 3981737} f5 {+6.80/14 1043 4143249} 50. h6 {+10.60/20 1020 2480341} b3 {+7.21/14 2115 9312332}
51. Qxb3 {+12.08/19 1027 2665168} Kd6 {+8.63/15 3036 13023241} 52. h7 {+60.04/22 1077 3057423} Be5 {+8.69/15 1359 5504752}
53. Qb8+ {M+30/29 1107 3390196} Kd5 {+9.66/16 1528 7838595} 54. Qxe5+ {M+15/36 1260 3597828} Kxe5 {+9.73/16 309 1597310}
55. h8=Q+ {M+13/36 1031 3118989} Kf4 {+10.84/16 1764 8509246} 56. Qc3 {M+9/38 1922 6357677} c4 {+10.91/16 1202 7049862}
57. Kf2 {M+8/41 591 2050813} Kg4 {+327.47/15 1151 5642564} 58. Qg7+ {M+5/116 855 4272308} Kh4 {+10.61/12 166 794794}
59. Ke3 {M+4/245 260 1682930} Kh3 {+327.45/13 311 1486871} 60. Qg1 {M+3/245 20 21256} c3 {+327.65/3 39 2577}
61. Kf4 {M+2/245 20 6194} c2 {+327.67/1 38 7} 62. Qg3# {M+1/245 17 6163} 1-0
[/pgn]

To be fair Stockfish lost the match 16-3
I ran a 200 game match with Dragon 2.5.1 giving knight odds to Benjamin 1.1 at your 1' + 1" time limit, using the middle 200 positions from the ChrisW set, which on average are about like actual knight odds. As I expected, Benjamin won with 100 win to 54 losses with 46 draws, for a +81 elo result.
Komodo rules!
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