ClassicAra Chess Engine..World Record Download!!

[Sylwy]

Do I understand correctly that with 'Precision' set to INT8 the engine plays faster/better on a CPU?

Yes & NOT !

Theoretically ..... future editions. Basically ..... use the GPU for higher speed. Anyway, even on the CPU it plays nice!

[Chessqueen]

Do I understand correctly that with 'Precision' set to INT8 the engine plays faster/better on a CPU?

Yes, that is what I read. Even if I have been only using the GPU version with FP16.

I just finished two tourneys against Halogen, one with the Precision set to INT8 and the other with the precision set to Float 32 I did NOT noticed any difference under Arena 3.5.1 and the score for both tourney of 10 games was identical. I did realized that no matter how much I set the hash to after ClassicAra 0.9.0 (Apr 7 2021) 373 MB. Why is the 373 MB always set to the same and it does NOT change

[Chessqueen]

Do I understand correctly that with 'Precision' set to INT8 the engine plays faster/better on a CPU?

Yes, that is what I read. Even if I have been only using the GPU version with FP16.

I just finished two tourneys against Halogen, one with the Precision set to INT8 and the other with the precision set to Float 32 I did NOT noticed any difference under Arena 3.5.1 and the score for both tourney of 10 games was identical. I did realized that no matter how much I set the hash to after ClassicAra 0.9.0 (Apr 7 2021) 373 MB. Why is the 373 MB always set to the same and it does NOT change

In the game Kasparov versus Topalov Wijk aan Zee 1999, Kasparov made the amazing Rook Sacrifice and saw the winning line, here ClassicAra saw it immediately 24.Rxd4!. According to Kasparov he said that he saw the Rook hanging on h8 the moment he played 24.Rxd4!
https://chessbase.in/news/Garry-Kasparo ... Reddit-AMA

[d]b2r3r/k4p1p/p2q1np1/NppP4/3p1Q2/P4PPB/1PP4P/1K1RR3 w - - 0 1

ClassicAra 0.9.0 (Apr 7 2021):
newgame
position b2r3r/k4p1p/p2q1np1/NppP4/3p1Q2/P4PPB/1PP4P/1K1RR3 w - - 0 1
create new tree
run mcts search
3/3 00:01 220 214 -5.06 b4 Nxd5 Qxd6
7/7 00:02 543 267 -1.21 b4 Qxf4 gxf4 Nxd5 bxc5 Nc3+ Kc1
10/10 00:03 826 272 -0.46 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Rxc4 Nxd5
13/13 00:04 1k 280 -0.04 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rd1 bxc4 Nxc4 Qxd5 Qb6+ Qb7 Rxd8+
13/15 00:05 1k 278 +0.13 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rd1 bxc4 Nxc4 Qxd5 Qb6+ Qb7 Rxd8+
13/16 00:06 2k 279 +0.14 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rd1 bxc4 Nxc4 Qxd5 Qb6+ Qb7 Rxd8+
13/17 00:07 2k 274 +0.16 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Nxc4 Qxd5 Qb6+ Qb7 Qxf6
15/18 00:08 2k 283 +0.10 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Nxc4 Qxd5 Qb6+ Bb7 Qxf6 Qd4 Qxf7
15/18 00:09 3k 279 +0.18 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Nxc4 Qxd5 Qb6+ Bb7 Qxf6 Qd4 Qxf7
15/18 00:10 3k 282 +0.22 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Nxc4 Qxd5 Qb6+ Bb7 Qxf6 Qd4 Qxf7
15/19 00:11 3k 282 +0.25 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Nxc4 Qxd5 Qb6+ Bb7 Qxf6 Qd4 Qxf7
15/19 00:12 3k 281 +0.33 Rxd4 cxd4 Qxd4+ Kb8 c4 Rhe8 Rc1 bxc4 Nxc4 Qxd5 Qb6+ Bb7 Qxf6 Qd4 Qxf7
15/19 00:13 4k 283 +0.40 Rxd4 cxd4 Qxd4+ Qb6 Re7+ Nd7 Qc3 Bxd5 Bxd7 Qg1+ Re1 Qb6 Re7 Qg1+ Re1
18/19 00:14 4k 283 +0.29 Rxd4 cxd4 Qxd4+ Qb6 Re7+ Nd7 Qc3 Rhe8 Rxd7+ Rxd7 Bxd7 Re3 Qd2 Rxf3 Bc6 Rf1+ Ka2 Rf2
13/19 00:15 4k 282 +0.20 Rxd4 Kb6 c4 Kxa5 b4+ cxb4 Qxd6 Rxd6 c5 Rxd5 axb4+ Ka4 Rf4
18/21 00:16 5k 284 +0.12 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/22 00:17 5k 284 +0.05 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:18 5k 285 0.00 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:19 5k 284 -0.03 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:20 6k 284 -0.07 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:21 6k 284 -0.11 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:22 6k 283 -0.12 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:23 7k 282 -0.11 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:24 7k 280 -0.09 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:25 7k 280 -0.09 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7
18/24 00:26 7k 280 -0.10 Rxd4 Kb6 c4 Kxa5 Qd2+ Kb6 b4 bxc4 bxc5+ Qxc5 Qb2+ Ka7 Rxc4 Qxc4 Re7+ Nd7 Rxd7+ Rxd7

[towforce]

Can any of our top testers give us an idea of when ratings will be available for ClassicAra, please?

[Chessqueen]

Can any of our top testers give us an idea of when ratings will be available for ClassicAra, please?

I can pretty much give an estimate, but the tester should wait to get version 0.9.2 post 1

[pgn][Event "TCEC Season 21 - League 4"]
[Site "https://tcec-chess.com"]
[Date "2021.05.19"]
[Round "3.5"]
[White "ClassicAra 0.9.2.post1"]
[Black "Stash 30"]
[Result "1-0"]
[Annotator "archive"]

1. Nf3 c5 2. g3 Nc6 3. c4 g6 4. Bg2 Bg7 5. Nc3 d6 6. O-O e5 7. Rb1 Nge7 8. a3 O-O 9. d3 a5 10. Ne1 Be6 11. Bg5 f6 12. Bd2 f5 13. b4 axb4 14. axb4 cxb4 15. Nd5 Bd7 16. Bg5 h6 17. Bxe7 Nxe7 18. Nxe7+ Qxe7 19. Nc2 Ba4 20. Rxb4 Bc6 21. Rb1 e4 22. Nb4 e3 23. f4 Qd7 24. Nxc6 bxc6 25. Rb6 Rfc8 26. Qb3 Kh7 27. Rb7 Rc7 28. Rxc7 Qxc7 29. Rb1 Ra5 30. Bf3 g5 31. Bh5 d5 32. Rf1 Kh8 33. cxd5 Rxd5 34. fxg5 hxg5 35. Bg6 f4 36. Be4 Rd6 37. Qa3 Be5 38. Qc5 Qe7 39. Kg2 Qf6 40. Qa7 Kg8 41. Qb7 Re6 42. Rc1 Qf7 43. Bxc6 Qxb7 44. Bxb7 Kg7 45. Bf3 Re8 46. Rc5 Kf6 47. Bg4 fxg3 48. Rc6+ Kg7 49. hxg3 Rd8 50. Re6 Rd5 51. Bh5 Kf8 52. Kh3 Ra5 53. Kg4 Rc5 54. Bg6 Kg7 55. Kf3 Bb8 56. Bh5 Rf5+ 57. Kg4 Re5 58. Rb6 Bc7 59. Rc6 Bb8 60. Rb6 Bc7 61. Rg6+ Kf8 62. Rc6 Ba5 63. Kf3 Ke7 64. d4 Rb5 65. Bg4 Bd2 66. Rc7+ Kf6 67. Rc6+ Ke7 68. Be6 Bb4 69. Bc4 Rf5+ 70. Kxe3 Be1 71. Ke4 Rf8 72. Rg6 Bxg3 73. Rxg5 Bd6 74. e3 Bh2 75. Rg6 Rh8 76. Rg7+ Kf6 77. Rf7+ Kg6 78. Rf2 Bc7 79. Kd5 Bb8 80. Bb5 Rd8+ 81. Kc4 Rc8+ 82. Kd5 Rd8+ 83. Ke6 Rd6+ 84. Ke7 Rb6 85. Rg2+ Kh5 86. Be8+ Kh4 87. d5 Bd6+ 88. Kd7 Be5 89. e4 Bg3 90. Rxg3 Kxg3 1-0[/pgn]

[Chessqueen]

[pgn][Event "TCEC Season 21 - League 4"]
[Site "https://tcec-chess.com"]
[Date "2021.05.19"]
[Round "2.2"]
[White "Cheng 4.41"]
[Black "ClassicAra 0.9.2.post1"]
[Result "0-1"]
[Annotator "archive"]

1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Bxc6 Bxc6 11. Nxc6 bxc6 12. Nc3 g6 13. Be3 Bg7 14. O-O O-O 15. Rc1 Nc4 16. b3 Nxe3 17. fxe3 Qa5 18. Qf3 e5 19. d5 cxd5 20. Qxd5 Qb6 21. Qe4 f5 22. Qc4+ Kh8 23. Nd5 Qb7 24. Qc6 Qxc6 25. Rxc6 Rad8 26. Rd1 e4 27. Kf1 Be5 28. h3 Kg7 29. Ke2 Kh6 30. Re6 Bb8 31. Rd4 Rc8 32. Rc4 Bg3 33. Rcc6 Rxc6 34. Rxc6 Rd8 35. Nb4 Rd7 36. Ra6 Be5 37. Ra5 Bc3 38. Rd5 Rc7 39. Nc2 Kg5 40. Na3 Kh4 41. Kf2 a6 42. Rd1 Be5 43. Nc4 Bg3+ 44. Kg1 Rc5 45. Rd4 g5 46. a3 h6 47. Kf1 Bb8 48. a4 Kg3 49. Rd8 Bc7 50. Ra8 a5 51. Re8 Rd5 52. Re7 Bd8 53. Re5 Rd1+ 54. Ke2 Rb1 55. Rxf5 Kxg2 56. Rd5 Be7 57. Re5 Bb4 58. Rxe4 Kxh3 59. Re6 h5 60. Re5 Kh4 61. e4 g4 62. Rf5 Rxb3 63. Ne5 Ra3 64. Ng6+ Kg3 65. Rxh5 Rxa4 66. Rh1 Ra2+ 67. Ke3 Ra3+ 68. Ke2 Bc5 69. Rc1 Be3 70. Rh1 a4 71. Ne7 Bg5 72. Nd5 Rb3 73. Rg1+ Kh3 74. Rh1+ Kg2 75. Rh5 Bc1 76. Ne7 a3 77. Ra5 Re3+ 78. Kd1 Rxe4 79. Nf5 Bb2 80. Ra7 Rf4 81. Nh4+ Kg3 82. Ng6 Rf6 83. Ne7 Rf7 84. Kc2 Kg2 85. Ra4 Rxe7 86. Rxg4+[/pgn]

[AdminX]

Can any of our top testers give us an idea of when ratings will be available for ClassicAra, please?

It's able to beat Deep Shredder 13 with the black pieces with a TC of 30+5, not sure it can hang with the top NNUE or Leela engines just yet. In the game below Shredder had ponder enabled, while this version (gpu) does not ponder. On my RTX2070S it seems to average 10 kN/s with FP16.

[pgn]
[Event "banksia game"]
[Date "2021.05.19"]
[White "Remote Deep Shredder 13"]
[Black "ClassicAra 0.9.0"]
[Result "0-1"]
[TimeControl "40/1800+1"]
[Time "21:03:54"]
[Termination "mate"]
[ECO "B96"]
[Opening "Sicilian"]

1. e4 {+0.19/26 43262 129544110} c5 {+0.34/37 48872 499102} 2. Nf3 {+0.23/26 41067 123432117} d6 {+0.33/38 9601 358400}
3. d4 {+0.15/27 77303 241451029} cxd4 {+0.32/33 49240 662416} 4. Nxd4 {+0.23/26 3620 159761616} Nf6 {+0.30/33 147246 1772395}
5. Nc3 {+0.19/29 14 420650222} a6 {+0.29/31 609 1681543} 6. Bg5 {+0.16/28 302504 878757744; B94: Sicilian, Najdorf, 6.Bg5} e6 {-0.03/35 48851 475956; B95: Sicilian, Najdorf, 6...e6}
7. f4 {+0.30/26 54474 152472290; B96: Sicilian, Najdorf, 7.f4} h6 {-0.07/33 459 321568} 8. Bh4 {+0.17/27 66459 191660048} Qb6 {-0.06/11 97421 1107426}
9. a3 {+0.14/28 95720 275440577} Be7 {-0.25/31 12599 142508} 10. Bf2 {+0.29/27 44271 164089639} Qc7 {+0.14/53 144278 1391270}
11. Qf3 {+0.18/29 22 379295244} Nbd7 {+0.04/51 45035 1429733} 12. O-O-O {+0.18/25 44386 117006838} b5 {+0.25/48 90047 1061093}
13. g4 {+0.17/26 13602 279909772} Bb7 {+0.32/36 85902 1671333} 14. Qe2 {+0.05/24 135422 366051544} g5 {-0.79/33 14511 114748}
15. fxg5 {-0.13/26 57550 197400476} hxg5 {-1.31/40 42302 386300} 16. Bg2 {-0.17/28 64313 308808595} Ne5 {-1.58/29 42406 389290}
17. h3 {-0.17/29 22124 188864549} Rc8 {-1.73/37 12652 325359} 18. Kb1 {-0.26/26 90166 253191937} Nc4 {-1.96/30 7354 198667}
19. Be1 {-0.26/26 32948 110960191} Nd7 {-2.31/36 44957 548295} 20. Na2 {-0.21/25 24799 198191885} Bf6 {-2.80/33 45151 416874}
21. c3 {-0.24/24 96741 274881677} Nc5 {-2.65/63 89211 848035} 22. Nb4 {-0.28/25 53813 155055688} Na4 {-3.87/28 13051 134489}
23. Nd3 {+0.00/25 28995 86626823} a5 {-4.07/23 5555 160141} 24. Rf1 {-0.62/22 46875 141048735} Bg7 {-4.84/37 45765 450582}
25. Qf2 {-1.33/24 76600 227644295} O-O {-6.19/37 45891 458794} 26. Ka2 {-1.94/23 20875 211307318} Ba6 {-6.22/35 369 291456}
27. h4 {-2.30/23 73038 239733318} b4 {-8.10/34 48994 557377} 28. cxb4 {-3.31/22 5296 175439160} Qb6 {-8.15/32 335 427336}
29. e5 {-2.79/24 42614 139123691} dxe5 {-9.12/32 47943 788132} 30. Nc2 {-2.50/26 2426 168310107} Qc7 {-9.20/30 1251 236072}
31. b3 {-4.22/22 56439 186297054} Ncb2 {-15.00/28 58037 634439} 32. Nxb2 {-9.44/22 28833 97824627} Nxb2 {-15.52/27 37171 854630}
33. Rb1 {-10.39/23 17170 187203009} Nd3 {-19.12/24 60278 653418} 34. Be4 {-10.17/24 29 150110653} Nxf2 {-19.40/20 58975 902606}
35. Rxf2 {-11.17/23 32 109855130} Bb7 {-19.98/19 21467 903638} 36. Bxb7 {-8.69/24 15936 55541360} Qxb7 {-19.64/18 66765 994687}
37. hxg5 {-9.27/26 34 214856890} Qe4 {-19.08/21 65891 961170} 38. Na1 {-10.22/28 11 240309375} axb4 {-18.96/23 64823 686897}
39. Bxb4 {-8.79/23 20 219274784} Rfd8 {-18.82/20 62361 750423} 40. Be7 {-11.26/24 37916 127817122} Qe3 {-18.88/19 24507 454205}
41. Rfb2 {-11.98/27 135172 669533542} e4 {-20.27/17 32976 364696} 42. Bf6 {-11.69/25 259661 1350737009} Bxf6 {-19.32/18 49613 571804}
43. gxf6 {-11.33/24 38356 47830976} Rd2 {-19.78/25 49750 736411} 44. g5 {-18.92/26 365813 71845351} Rxb2+ {-20.52/22 28939 353535}
45. Rxb2 {-13.89/23 71560 76328340} Qxg5 {-21.02/20 50011 657765} 46. a4 {-13.62/24 80994 696295193} Qxf6 {-22.06/24 50408 582584}
47. Nc2 {-14.06/26 195052 804778779} Qc3 {-22.49/16 50182 582601} 48. Na3 {-18.90/26 54039 328901019} e3 {-22.05/13 50103 625971}
49. Rg2+ {-13.97/26 137850 205879780} Kf8 {-22.24/23 50091 559775} 50. Rb2 {M-13/26 1774 10456223} Qd3 {-23.35/28 49764 555398}
51. Nc4 {M-11/22 10 347786} Rxc4 {-22.33/23 49729 569424} 52. bxc4 {M-14/30 9233 70949717} Qxc4+ {-22.18/31 49493 748322}
53. Ka3 {M-13/26 40 2385475} e2 {-21.50/29 49334 747063} 54. Rb1 {M-12/26 124 10087988} Qc3+ {-20.71/23 49406 671703}
55. Ka2 {M-11/22 158 570382} f5 {-23.42/19 29489 500077} 56. Rb8+ {M-11/23 970 6197148} Kf7 {-26.61/25 32657 371444}
57. Rb7+ {M-11/22 296 1032783} Kf6 {-26.69/23 50427 617481} 58. Rb1 {M-10/20 128 264126} e1=Q {-23.69/21 50539 714440}
59. Rxe1 {M-9/18 1071 102476} Qxe1 {-22.78/19 50355 684996} 60. a5 {M-8/16 112 75077} Qxa5+ {-21.75/21 50066 563722}
61. Kb3 {M-7/14 111 23222} Qc5 {-23.49/21 34289 483432} 62. Ka4 {M-6/12 115 23061} Qb6 {M+10/19 1174 1490}
63. Ka3 {M-5/10 87 5915} Qb5 {M+9/17 711 315} 64. Ka2 {M-6/12 112 14886} e5 {M+8/15 83 124}
65. Ka3 {M-5/10 79 7628} f4 {M+5/9 199 26} 66. Ka2 {M-4/8 10 1146} f3 {M+4/7 14 13}
67. Ka3 {M-3/6 114 438} f2 {M+3/5 10 5} 68. Ka2 {M-2/4 121 208} f1=Q {M+2/3 10 3}
69. Ka3 {M-1/2 103 22} Qa1# {M+1/1 10 1} 0-1
[/pgn]

Lichess Analysis: https://lichess.org/GpJAfESg#0

[Chessqueen]

This was a very interesting promotion to a Knight instead of a Queen, on move 70. Kd3 h1=N by ClassicAra 9.9.2.post1

[pgn][Event "TCEC Season 21 - League 4"]
[Site "https://tcec-chess.com"]
[Date "2021.05.19"]
[Round "4.3"]
[White "Nirvana 2.5"]
[Black "ClassicAra 0.9.2.post1"]
[Result "1/2-1/2"]
[Annotator "archive"]

1. e4 c6 2. Nf3 d5 3. e5 Bg4 4. Be2 e6 5. O-O Ne7 6. d4 c5 7. dxc5 Nbc6 8. Ne1 Bf5 9. Nc3 Ng6 10. b4 a5 11. b5 Ncxe5 12. Na4 Rc8 13. Be3 h5 14. Nf3 Ng4 15. c4 Nxe3 16. fxe3 dxc4 17. Qxd8+ Kxd8 18. c6 bxc6 19. b6 Ba3 20. Bxc4 Ke7 21. b7 Rc7 22. e4 Bg4 23. Ba6 Rb8 24. Nd4 h4 25. Rf2 Ne5 26. Rc2 Rbxb7 27. Bxb7 Rxb7 28. Nxc6+ Nxc6 29. Rxc6 Rb4 30. h3 Rxa4 31. hxg4 Bb2 32. Rb1 Bd4+ 33. Kf1 Kf6 34. Rc2 Be5 35. Rb5 Bg3 36. e5+ Kg5 37. Ke2 Bf4 38. Rbc5 Re4+ 39. Kd3 Re3+ 40. Kd4 a4 41. Rc7 Kxg4 42. Rxf7 g5 43. Ra7 Kf5 44. Rf7+ Kg4 45. Ra7 a3 46. Ra8 Kf5 47. Rf8+ Kg4 48. Ra8 Rxe5 49. Rxa3 Re1 50. Kc4 e5 51. Ra8 Kg3 52. Ra3+ Kg4 53. Ra7 e4 54. a4 e3 55. a5 Ra1 56. Kb5 Rb1+ 57. Kc4 Ra1 58. Kb5 Rb1+ 59. Kc4 Kg3 60. a6 Ra1 61. Ra8 Ra4+ 62. Kb3 Re4 63. Rac8 Re7 64. Ra2 Kh2 65. g3+ Kxg3 66. a7 Rxa7 67. Rxa7 h3 68. Kc4 h2 69. Ra1 Kg2 70. Kd3 h1=N 71. Rb1 Nf2+ 72. Ke2 Ne4 73. Rb3 Ng3+ 74. Kd3 Kf3 75. Ra3 Ne2 76. Ra2 Ng1 77. Ra1 Nh3 78. Re1 Nf2+ 79. Kd4 Ng4 80. Rc2 Be5+ 81. Kd3 Nf2+ 82. Kc4 Bg3 83. Rc3 Ng4 84. Rd1 Kf2 85. Rc2+ Kf3 86. Rc3 Bf4 87. Rg1 Nf6 88. Rc2 Ne4 89. Kd4 Nd2 90. Kd3 Ne4 91. Re1 Nf2+ 92. Kd4 Ng4 93. Ra2 Be5+ 94. Kd3 Nf2+ 95. Kc4 Ng4 96. Rb1 Bf4 97. Ra3 Ke4 98. Ra2 Nh2 99. Ra4 Be5 100. Kb3+ Kf3 101. Ra5 Bf4 102. Kc2 Ng4 103. Kc3 Nf2 104. Kd4 g4 105. Ra7 g3 106. Rg1 Nh3 107. Rf1+ Ke2 108. Raa1 Nf2 109. Rg1 Nh3 110. Rae1+ Kd2 111. Rd1+ Ke2 112. Rde1+ Kf3 113. Rxg3+ Kxg3[/pgn]

[Chessqueen]

This was a very interesting promotion to a Knight instead of a Queen, on move 70. Kd3 h1=N, promoting to a Queen or a Rook lose immediately since 71.Rc2+ by ClassicAra 9.9.2.post1

[d]2R5/8/8/6p1/5b2/3Kp3/6kp/R7 b - - 0 1

Crystal 150121:
NNUE evaluation using nn-62ef826d1a6d.nnue enabled
1/1 00:00 157 157k -0.24 e2
2/2 00:00 539 539k -0.23 e2 Kxe2
3/3 00:00 859 859k -0.23 e2 Kxe2 h1Q
4/4 00:00 2k 1,623k -0.23 e2 Kxe2 h1Q Rxh1
5/6 00:00 3k 1,615k -0.23 e2 Kxe2 h1Q Rxh1 Kxh1
6/9 00:00 13k 4,368k -0.43 g4 Rcc1 g3 Rcb1 Bg5 Rd1
7/8 00:00 19k 4,865k -0.42 g4 Rcc1 g3 Rcb1 Bg5 Ra2+ e2 Rba1
8/11 00:00 37k 4,579k -0.40 g4 Rc4 Be5 Rb1 e2 Rcc1 g3 Kxe2
9/14 00:00 86k 4,791k -0.38 g4 Ke4 g3 Rc2+ Kh3 Kf3 Be5 Rg2 Bxa1 Rxg3+ Kh4
10/19 00:00 192k 4,929k 0.00 h1N Rc6 Nf2+ Ke2 Nh3 Rc5 Ng1+ Kd3 e2 Rc8
11/16 00:00 248k 4,766k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rg8 Be5 Kxe3 Bf4+ Ke2
12/22 00:00 292k 4,706k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rg8 Kh3 Rh8+ Kg3
13/19 00:00 307k 4,790k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
14/18 00:00 321k 4,797k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
15/20 00:00 377k 4,716k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
16/24 00:00 472k 4,673k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
17/15 00:00 593k 4,704k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
18/15 00:00 684k 4,684k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
19/15 00:00 827k 4,753k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
20/15 00:00 1,127k 4,735k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
21/15 00:00 1,673k 4,994k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
22/32 00:00 2,315k 4,916k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
23/15 00:00 3,045k 4,944k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
24/15 00:00 3,753k 5,010k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
25/15 00:01 7,671k 5,218k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
26/15 00:01 8,127k 5,253k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
27/15 00:01 9,028k 5,258k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
28/15 00:03 15,848k 5,265k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
29/15 00:05 28,896k 5,500k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
30/15 00:05 29,837k 5,521k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
31/15 00:05 30,821k 5,520k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
32/15 00:11 87,580k 7,581k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
33/15 00:33 236,448k 7,053k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
34/15 00:36 253,952k 7,004k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4
35/15 00:37 260,501k 6,974k 0.00 h1N Rxh1 Kxh1 Rg8 Kg2 Ke2 Kg3 Rf8 g4 Rf7 Bh6 Rh7 Bf4

[Gabor Szots]

Can any of our top testers give us an idea of when ratings will be available for ClassicAra, please?

I'm in the middle of a tournament, results are not particularly encouraging, I estimate around 2650 on CCRL blitz scale.