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Up Topic The Rybka Lounge / Computer Chess / TCEC 20 Sufi Bonus: Lc0 vs. Dragon
- By MrKris (***) Date 2021-02-17 23:26
https://tcec-chess.com/
S20 Sufi Bonus 2  (45|5)

                            until 100
1. LCZero 0.27.0d_JH.94-100  16.5/32
    2. KomodoDragon 2657.00  15.5/32


Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=7&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=8&season=20
1. e4 g6 2. d4 d6 3. Nc3 c6 4. f4 {Book.} d5 5. e5 h5 6. Be3 Bf5
7. Qd2 Nd7 8. Nf3 e6 9. Be2 {by Dragon, draw} ( 9.h3 {by Lc0, won} )

Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=11&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=12&season=20
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. O-O Bg4 7. h3 Bh5 8. g4 Nxg4 9. hxg4 Bxg4 {Book.} 10. Be3 Be7 11. Kg2 f5 12. Qe1 Bxf3+ 13. Kxf3 f4 14. Bd2 h5 15. Bc3 Bf6 {by Komodo, lost} ( 15... Qd6 {by Lc0, draw} )

Dragon 1-0 Lc0 https://tcec-chess.com/#div=sfb2&game=29&season=20
Lc0 1/2-1/2 Dragon https://tcec-chess.com/#div=sfb2&game=30&season=20
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 {Book.} 5. Nf3 ( 5. Be2 {Lc0 1/2-1/2 Dragon} O-O 6. Nf3 e5 7. O-O h6 8. d5 a5 9. Be3 Na6 10. Nd2 h5 11. h3 b6 12. a3 Bd7 13. Rb1 Nh7 14. Qc2 f5 15. exf5 gxf5 {etc.} )
O-O 6. h3 e5 7. d5 Nh5 8. g3 f5 9. exf5 gxf5 10. Ng5 Nf6 11. g4 Na6 12. Ne6 Bxe6 13. dxe6 Ne4 14. Nxe4 fxe4 15. Be3 c6 {etc. Dragon 1-0 Lc0}
- By MrKris (***) Date 2021-02-18 07:47 Edited 2021-02-18 07:49
https://tcec-chess.com/
S20 Sufi Bonus 2  (45|5)

                            until 100
1. LCZero 0.27.0d_JH.94-100  19.5/36
    2. KomodoDragon 2657.00  16.5/36


Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=33&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=34&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.18"]
[Round "34.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[Annotator "archive"]

1. c4 b6 2. d4 e6 3. e4 Bb7 4. Bd3 Bb4+ {Book.} 5. Kf1 Be7 6. Nc3 (6.Nf3 {Dragon 1/2-1/2 Lc0} )

Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=35&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=36&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.18"]
[Round "36.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[Annotator "archive"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 {Book.} g4 6. Nh4 Ne7 7. d4 Ng6 8. Nxg6 ({Dragon 1/2-1/2 Lc0} 8.Ng2 Nc6 9.Be3 h5 {etc.})
hxg6 9. Qd3 {etc.}
- By MrKris (***) Date 2021-02-18 16:10
https://tcec-chess.com/
S20 Sufi Bonus 2  (45|5)

                            until 100
1. LCZero 0.27.0d_JH.94-100  23.5/42
    2. KomodoDragon 2657.00  18.5/42


Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=37&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=38&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.18"]
[Round "38.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[BlackElo "3570"]
[ECO "B30"]
[Opening "Sicilian"]
[Variation "Rossolimo, 3...Qb6"]
[WhiteElo "3588"]
[TimeControl "2700+5"]
[Termination "adjudication"]
[PlyCount "175"]
[WhiteType "human"]
[BlackType "human"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qb6 {Book.} 4. Bxc6 (4.Nc3 {Dragon 1/2-1/2 Lc0}
e6 5. Bxc6 bxc6 6. d3 Qc7 {91 moves} )
4... bxc6 5. O-O f6 6. d3 g6 {88 moves}

Dragon 0-1 Lc0 https://tcec-chess.com/#div=sfb2&game=39&season=20
Lc0 1/2-1/2 Dragon https://tcec-chess.com/#div=sfb2&game=40&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.18"]
[Round "39.1"]
[White "KomodoDragon 2657.00"]
[Black "LCZero 0.27.0d_JH.94-100"]
[Result "0-1"]
[Annotator "archive"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 {Book.}
10. f3 {59 moves} (10.f3 {Lco 1/2-1/2 Dragon, 71 moves})
- By MrKris (***) Date 2021-02-19 02:46
https://tcec-chess.com/
S20 Sufi Bonus 2  (45|5)

                            until 100
1. LCZero 0.27.0d_JH.94-100  27.5/48
    2. KomodoDragon 2657.00  20.5/48


Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=43&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=44&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "https://tcec-chess.com"]
[Date "2021.02.18"]
[Round "44.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[Annotator "archive"]

1. d4 f5 2. g3 g6 {Book.} 3. h4 Nf6 4. h5 Bg7 5. h6 Bf8 6. Bg2 {159 moves} (6.c4 {Dragon 1/2-1/2 Lc0, 52 moves})

Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=45&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=46&season=20
1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 Na5 9. Bc2 c5
10. d4 Qc7 {Book.} 11. d5 O-O {Lc0 1-0 Dragon, 91 moves} (11...Nd7 {Dragon 1/2-1/2 Lc0, 35 moves})
- By MrKris (***) Date 2021-02-19 05:00
https://tcec-chess.com/
S20 Sufi Bonus 2  (45|5)

                            until 100
1. LCZero 0.27.0d_JH.94-100  29.0/50
    2. KomodoDragon 2657.00  21.0/50


After a slow start Lc0 is winning most opening-pairs 1.5/2, often consecutively.

From the live chat, about move 50(?).
Moderator27-Month Subscriber (2-Year Badge)Qg3TwoExclamationMarks
: Is something happening? PogChamp
17-Month Subscriber (1-Year Badge)Prime Gamingmasterkni6
: some serious outmaneuvering that i dont understand


Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=49&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=50&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.18"]
[Round "50.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[Annotator "archive"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5 {Book.} 7. d5 c6
(7... Nh5 {Dragon 1/2-1/2 Lc0, 69 moves})
8. Qd2 Na6 9. g4 cxd5
10. cxd5 Nc5 11. h4 h5 12. g5 Ne8 13. b4 Nd7 14. Nh3 a5 15. b5 Nc5 16. Nf2 b6 17. Nd3 Kh7
18. O-O-O f5 19. Be2 Bd7 20. Nb2 fxe4 21. fxe4 Rc8 22. Kb1 Rf4 23. Bxc5 Rxc5 24. Nba4 Rc8
25. Rc1 Nc7 26. Nb2 Na8 27. a4 Rc5 28. Nc4 Bc8 29. Qe3 Nc7 30. Nd2 Qf8 31. Qd3 Qg8 32. Bd1 Qf7
33. Rh2 Qf8 34. Rc2 Bb7 35. Nb3 Ne8 36. Be2 Qf7 37. Kb2 Qe7 38. Rh3 Qd8 39. Rc1 Qc7 40. Rc2 {TCEC 1.24} Qe7
41. Rh2 Rc7 42. Nd1 Rxc2+ 43. Kxc2 Qc7+ 44. Kb2 {TCEC 1.43} Bf8 45. Qe3 Be7 46. Bd3 Bc8 47. Rc2 Qb7
48. Qg3 {TCEC 1.64} Bg4 49. Ne3 Rf3 50. Qg1 Bc8 51. Bf1 Bd8 52. Bg2 {TCEC 2.08} Rf7 53. Qe1 Qd7 54. Qg3 Bc7 55. Nc1 Qe7
56. Nd3 {TCEC 2.32} Qf8 57. Kc1 Bd7 58. Kd2 {2.80} Bc8 59. Ke2 Bb7 60. Bh3 Ng7 61. Nf5 Nxf5 62. Bxf5 {TCEC 3.99} Qe7 63. Be6 Rf8
64. Qh3 Kg7 65. Ne1 Bd8 66. Ng2 {TCEC 4.88} Kh8 67. Qg3 Kg7 68. Ke1 Bc7 69. Ne3 Kh8 70. Nf5 {TCEC 6.41} Qh7 71. Kd1 Bb8
72. Nh6 Rf1+ 73. Ke2 Rf8 74. Kd3 Bc7 75. Rf2 Qe7 76. Bf7 Bxd5 77. exd5 e4+ 78. Ke2 e3 79. Rf6 Bd8
80. Qxd6 Qxd6 81. Rxd6 Bc7 82. Rd7 Be5 83. d6 Bxd6 84. Bxg6 Rf2+ 85. Kd3 Rd2+ 86. Ke4 Rd4+
87. Kxd4 Bc5+ 88. Kd5 Be7 89. Rxe7 e2 90. Rh7# 1-0
- - By MrKris (***) Date 2021-02-20 03:34
https://tcec-chess.com/
S20 Sufi Bonus 2  (45|5)

                            until 100
1. LCZero 0.27.0d_JH.94-100  37.5/64
    2. KomodoDragon 2657.00  26.5/64


In the few more games since my last post Lc0 has gone from +8 to +11.

Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=55&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=56&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.19"]
[Round "56.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[BlackElo "3570"]
[ECO "E12"]
[Opening "Queen's Indian"]
[Variation "Petrosian, 4...c5 5.d5 Ba6 6.Qc2"]
[WhiteElo "3588"]
[TimeControl "2700+5"]
[Termination "normal"]
[PlyCount "159"]
[WhiteType "human"]
[BlackType "human"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 c5 5. d5 Ba6 6. Qc2 {Book.} exd5 7. cxd5 d6 {80 moves}
( 7... Be7 {Dragon 1/2-1/2 Lc0, 70 moves} )

Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=57&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=58&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.19"]
[Round "58.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[BlackElo "3570"]
[ECO "D07"]
[Opening "QGD"]
[Variation "Chigorin, 3.Nf3 Bg4 4.cxd5 Bxf3 5.gxf3"]
[WhiteElo "3588"]
[TimeControl "2700+5"]
[Termination "normal"]
[PlyCount "159"]
[WhiteType "human"]
[BlackType "human"]

1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. cxd5 Bxf3 5. gxf3 Qxd5 6. e3 e5 7. Nc3 Bb4
8. Bd2 Bxc3 9. bxc3 Qd6 10. Rb1 b6 {Book.} 11. f4 exf4 12. e4 Nge7 13. Qf3 Qa3
14. Bg2 Qxa2 15. Rd1 Qc4 16. Bxf4 O-O 17. h4 {80 moves} ( 17. Qd3 {Dragon 1/2-1/2 Lc0, 46 moves} )

Dragon 1/2-1/2 Lc0 https://tcec-chess.com/#div=sfb2&game=61&season=20
Lc0 1-0 Dragon https://tcec-chess.com/#div=sfb2&game=62&season=20
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.19"]
[Round "62.1"]
[White "LCZero 0.27.0d_JH.94-100"]
[Black "KomodoDragon 2657.00"]
[Result "1-0"]
[BlackElo "3570"]
[ECO "A50"]
[Opening "Indian"]
[Variation "Queen's Indian Accelerated, 1.d4 Nf6 2.c4 b6"]
[WhiteElo "3588"]
[TimeControl "2700+5"]
[Termination "normal"]
[PlyCount "157"]
[WhiteType "human"]
[BlackType "human"]

1. d4 Nf6 2. c4 b6 3. f3 Nc6 4. Nc3 e5 5. d5 Ne7 6. g4 {Book.} d6 7. h4 h6 {79 moves} ( 7...d6 {Dragon 1/2-1/2 Lc0, 66 moves} )
Parent - - By sarona (*) Date 2021-02-21 03:32 Edited 2021-02-21 07:30
Not a good week for the Komodo guys.

I have a few days off and was looking at game 39 - K_Dragon's loss with white.  Really don't understand white's play in that game. Especially after 18. Ba6.  Lc0 and Stoofvlees were showing b5 and a5, respectively.


Then came 18...g4 and Komodo's eval started dropping - eventually reaching 0.00 by move 19.  On move 26 Komodo's eval plummeted to -1.96. Not sure, but maybe 25. Ne2 was better here for white.

This is getting very repetitive, but thanks again, Mr. Kris.  I still travel a lot on the job (inside of Alberta) and these analytical posts/threads really are a treat in the evenings. I don't have a lot of options in those motel rooms and the talking heads on television often (usually) can be very annoying. . . :eek:

Kudos and take care.
Parent - By MrKris (***) Date 2021-02-22 04:06
Thank you very much for your very kind words!

(Unfortunately I will not be able to post much for the next week or so.)

Thanks for pointing out game 39, the only black win so far.
One of the better engine games I've ever seen, I think.

Sometimes Lc0 is called "positional", its exchange and two pawns sacrifice after 28...Qxb8 looks Tal-like to me: a 'positional sacrifice' without a definite forcing continuation, at least as in human vs. human over-the-board.
After that I was very impressed with Lc0's tactics.

> Really don't understand white's play in that game.


Years ago, about a Komodo I had purchased in a game I made, I wrote somewhere something like 'it seems to give itself a bonus for the distance its pieces are away from its own king, the farther the better.' A bit of a joke of course about that particular game.
In the TCEC game it had 26.Ra3 0.00 - definitely giving black compensation for the material, but unaware of the danger.

> maybe 25. Ne2 was better here for white.


My Stockfish was looking at 25. Nd3 but I'll see what my better system says when its back up.

[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.18"]
[Round "39.1"]
[White "KomodoDragon 2657.00"]
[Black "LCZero 0.27.0d_JH.94-100"]
[Result "0-1"]
[ECO "E99"]
[Opening "King's Indian"]
[Variation "Mar del Plata, 10.f3 f5 11.Be3 f4 12.Bf2 g5"]
[TimeControl "2700+5"]
[Termination "normal"]
[PlyCount "118"]
[FEN "1q3rk1/1Bp3b1/2Ppb1n1/4p2n/PP2P2p/2N2P2/6P1/R2QNRK1 w - - 0 25"]

{After 24...Qxb8 TCEC -0.23} 25. Nd5 h3 26. Ra3 {TCEC 0.00} Ngf4 {TCEC -1.74} 27. g4 {TCEC -1.96} Ng3 28. Rf2 Bxd5 (28. .. Qa7 {?} 29.
Ne3) 29. Kh2 (29. exd5 {?} Qa7 30. Qc2 Nfe2+) 29. .. Qa7 30. Qc2 Bf6 31. Kxg3
Kg7 {TCEC -4.49} 32. Nd3 h2 33. Kxh2 Rh8+ 34. Kg1 Bh4 35. Nxf4 exf4 36. Qb2+ Kg8 37. Qd2
(37. exd5 {?!} Bxf2+ 38. Kg2 Bg1) 37. .. Bxf2+ 38. Kg2 Be6 39. Bc8 Bg3 40. Bxe6+
Kg7 41. Kf1 Rh2 42. Qxh2 Bxh2 43. Ke2 Bg1 44. Rd3 Qf2+ 45. Kd1 Qb2 46. Rd2
Qc3 {Stockfish on my old AMD PhII takes only 90 secs. for M16!, the TCEC game ended on move 59 with mate so Lc0 missed it.} 47. Bd5 Be3 48. Ra2 Qd3+ 49. Ke1 Bd4 50. g5 Bc3+ 51. Kf2 Qd1 52. Kg2
Bd4 53. Rf2 Kg6 54. Bf7+ Kxg5 55. Be6 Qe1 56. Rf1 Qe2+ 57. Kh1 Qxf1+ 58.
Kh2 Qg1+ 59. Kh3 Qg3#

> Not a good week for the Komodo guys.


Kudos to TCEC for running these bonuses. In other events, Div P and over at CCC, the very top engines (Stockfish, Lc0, Dragon, StockfishClassic and Komodo classic) do well but they play each other relatively few games.

My last post, through game 64, Lc0 was +11.
Through game 96 its Lc0 +14.
- - By MrKris (***) Date 2021-02-22 05:56 Edited 2021-02-22 06:20
https://tcec-chess.com/#div=sfb2&game=95&season=20
Game 95:
[Event "TCEC Season 20 - Sufi Bonus 2"]
[Site "tcec-chess.com"]
[Date "2021.02.21"]
[Round "95.1"]
[White "KomodoDragon 2657.00"]
[Black "LCZero 0.27.0d_JH.94-100"]
[Result "1/2-1/2"]
[BlackElo "3588"]
[ECO "C92"]
[Opening "Spanish"]
[Variation "Closed, Zaitsev, 12.a4 h6 13.Bc2 exd4 14.cxd4 Nb4 15.Bb1 c5"]
[WhiteElo "3570"]
[TimeControl "2700+5"]
[Termination "adjudication"]
[PlyCount "125"]
[FEN "8/r3n1k1/3R2Pp/p4p1P/B2R4/5P2/5K2/2r5 b - - 3 46"]

46. .. Rh1 {TCEC 0.08} 47. Rd7 {TCEC 4.08} Rxd7 48. Rxd7 Kf6 49. g7 Rh2+ 50. Kg3 Rxh5
51. f4 Rh1 52. Bb3 {TCEC 6.28} Rg1+ 53. Kh3 {TCEC 5.55} a4 54. Bc4 {0.00} h5 55. Ra7 a3 56. Rxe7 Kxe7 57. g8=Q Rxg8 58. Bxg8 Kf8 59. Ba2 Kg7 60. Kh4 Kh6 61. Bd5 Kg6 62. Bb3 Kh6 63.
Bc4 {1/2-1/2}
Parent - - By sarona (*) Date 2021-02-23 02:24
This seems to be a position where the Lc0 type nets get the right idea immediately. Even the PhoenixStein 1.2 net with Lc0 0.27.0 (RTX 2080Ti - CUDA fp16 backend) evaluates the position as equal immediately. (it actually likes 16...g4 at the start and eventually switches to 16...bxc6)

Before I read your post (2021-02-22 04:06) regarding Komodo, I thought that eval might be a weakness in the K_Dragon net. I had Komodo 14.1 and Komodo 14.1 MCTS (MCTS box checked) take a look at the position after 16. c6
r1bq1rk1/ppp3b1/2Pp1nn1/3Pp1pp/PP2Pp2/2N2P2/4BBPP/R2QNRK1 b - - 0 1


I gave each Komodo a half hour of time and the engines still scored the position as an advantage for white. MCTS 14.1 at 0.70 and A/B 14.1 at 0.86 (6828 MN).

Stockfish 200221 starts out with high evals for white, but soon gets the right idea around depth 40 - eventually scoring it as 0.00 at depth 44 (4057MN nodes).
Parent - By MrKris (***) Date 2021-02-23 08:06 Upvotes 1
Interesting position from an interesting game, thanks again for pointing it out.

Here is what happened here at blitz. I do not have Dragon or 14.1. The Stockfish is with NNUE but no avx, ssse etc.
Though Stockfish gave white an advantage and its depths was always much lower than 44 it won.
(Here "-" is bad for the mover even if it is black.) [Event "G/10'+2'' 1GBh Sy.6"]
[Site "AMD PhII X6"]
[Date "2021.02.22"]
[Round ""]
[White "Komodo-13.2.5"]
[Black "Stockfish_21021123_x64"]
[Result "0-1"]
[BlackElo "2000"]
[Time "22:54:14"]
[WhiteElo "2200"]
[TimeControl "600+2"]
[SetUp "1"]
[FEN "r1bq1rk1/ppp3b1/2Pp1nn1/3Pp1pp/PP2Pp2/2N2P2/4BBPP/R2QNRK1 b - - 0 1"]
[Termination "normal"]
[PlyCount "38"]
[WhiteType "program"]
[BlackType "program"]

{'r1bq1rk1/ppp3b1/2Pp1nn1/3Pp1pp/PP2Pp2/2N2P2/4BBPP/R2QNRK1 b - - 0 1'} 1. ... bxc6 {-0.86/28 12} 2. dxc6 {+0.67/24 10} g4 {-0.82/28 12} 3. Bc4+
{+0.82/24 18} Kh7 {-0.86/31 23} 4. b5 {+0.90/24 14} g3 {-0.94/29 5} 5. hxg3
{+0.88/26 13} fxg3 {-0.86/28 5} 6. Bxg3 {+0.97/27 15} h4 {-0.49/27 7} 7.
Bf2 {+0.83/26 13} Nh5 {-0.49/28 18} 8. Kh2 {+1.14/25 8} Ng3 {-0.20/29 37}
9. Rg1 {+0.78/26 9} Bh6 {0.00/28 5} 10. Nd3 {+0.46/25 17} Bf4 {0.00/32 8}
11. Nxf4 {+0.33/26 12} exf4 {0.00/33 8} 12. Nd5 {0.00/25 15} Ne5 {0.00/35
7} 13. Rc1 {0.00/27 7} Qg5 {+0.65/26 8} 14. Nxc7 {0.00/26 20} Rf6 {+2.09/26
6 <<< Diagram >>>} 15. Be6 {-2.68/25 29} Bxe6 {+5.09/25 12} 16. Rc3 {-4.53/27 38} Bc8
{+8.17/28 7} 17. Ne8 {-11.81/26 29} Rh6 {+13.00/28 7} 18. Qxd6 {-14.09/26
69} h3 {+15.71/28 10} 19. Nf6+ {-11.79/20 12} Rxf6 {+17.75/24 9} 20. Qe7+
{-12.57/22 59 White resigns} 0-1 After 14...Rf8-f6 +(for black)2.09, R offer:
r1b5/p1N4k/2Pp1r2/1P2n1q1/P1B1Pp1p/5Pn1/5BPK/2RQ2R1 w - - 1 15


Just the first Arena "print" over 3 minutes with various old Komodo's from when I was a purchaser:
(I stopped buying it just before NNUE & Dragon when I thought Komodo was falling further and further behind Stockfish pre-NNUE.)

--Then below that is an example of 'game mode', even blitz, being better than analysis.
After the game it took Stockfish a long time to see how bad 14.Nxc7 is for white,
but in the game it said 14...Rf6 +(for black)2.09 right away:
 
FEN: r1bq1rk1/ppp3b1/2Pp1nn1/3Pp1pp/PP2Pp2/2N2P2/4BBPP/R2QNRK1 b - - 0 1

AMD PhII X6 , here - is bad for mover black, good for white

Komodo-13.2.5: Found 510 WDL and 510 DTZ tablebase files (up to 6-man).
... 30-  03:09   1,207,542k  6,386k  -0.75  1. ... bxc6 2.dxc6

Komodo-12.2.2:
... 32  03:10   1,211,192k  6,347k  -0.54  1. ... bxc6 2.Bc4 c5 3.bxc5 g4 4.Rb1 a6 5.Qc2 Nh7 6.Kh1 Ng5 7.Qd1 Qf6 8.c6 Rf7 9.Be2 h4 10.fxg4 h3 11.Bf3 a5 12.Nb5 Qe7 13.gxh3 Nxh3 14.Qe2 Rb8 15.Ba7 Ra8 16.Qg2 Qh4 17.Bf2 Qh6 18.Nd3 Bf6 19.Be1

Komodo-11.3.1-64bit:
... 29+  02:46   959,636k  5,761k  -0.72  1. ... bxc6 2.dxc6 Kh8
 29  04:45   1,652,702k  5,797k  -0.68  1. ... bxc6 2.dxc6 Kh8 3.Bc4 g4 4.b5 Bh6 5.Ra2 Qe8 6.Kh1 Be6 7.Qb3 Bxc4 8.Qxc4 Kg7 9.Qe2 Qf7 10.Nd3 Qb3 11.Qb2 Qxb2 12.Rxb2 Bg5 13.Nb4 Bh4 14.Bxh4 Nxh4 15.Nbd5 Rac8 16.a5 Ng6 17.b6 axb6 18.axb6 Nxd5 19.Nxd5

Komodo-10.4-64bit:
... 28  03:10   1,071,698k  5,634k  -0.79  1. ... bxc6 2.dxc6 g4 3.Bc4+ Kh7 4.b5 Qe8 5.Qb3 Kh8 6.Kh1 Ne7 7.Ra2 Qg6 8.Bh4 Rb8 9.Qc2 Bh6 10.a5 Bg5 11.Bf2 Ra8 12.Qb3 Qg7 13.Bg1 g3 14.Nd3 gxh2 15.Bxh2 Bh4 16.Rg1
_ _ _ _ _ _

FEN: r1b2r2/p1p4k/2Pp4/1P1Nn1q1/P1B1Pp1p/5Pn1/5BPK/2RQ2R1 w - - 4 14

Stockfish_21021123_x64:
Found 510 tablebases
NNUE evaluation using nn-62ef826d1a6d.nnue enabled
 1/1  00:00   199  100k  +2.25  14.Nxc7
 2/2  00:00   363  182k  +4.44  14.Nxc7 Nxc4
 3/3  00:00   571  286k  +4.44  14.Nxc7 Nxc4 15.Rxc4
...
 24/31-  00:09   30,474k  3,059k  -0.19  14.Rc3 Rf7
 24/37+  00:10   33,741k  3,068k  -0.11  14.Nxc7
...
 37/46  00:52   156,646k  2,959k   0.00  14.Nxc7 Nxc4 15.Rxc4 h3 16.Qxd6 hxg2 17.Kxg2 Ne2+ 18.Kf1 Nxg1 19.Ne6 Bxe6 20.Qxe6 Rae8 21.Qd7+ Re7 22.Qd5 Qxd5 23.exd5 Nxf3 24.Rc2 Nh2+ 25.Kg2 Ng4 26.Bc5 f3+ 27.Kf1 f2 28.Rxf2 Rxf2+ 29.Bxf2 Rf7 30.Kg2 Rxf2+ 31.Kg3 Rf8 32.Kxg4 Kg7 33.a5 Kf6 34.Kf4 Rg8 35.b6 axb6 36.axb6
 38/46-  01:14   224,398k  3,008k  -0.08  14.Nxc7 Rf6
 38/46-  01:35   289,647k  3,019k  -0.16  14.Nxc7 Rf6
 38/46-  01:47   326,947k  3,030k  -0.28  14.Nxc7 Rf6
 38/46-  02:08   389,103k  3,038k  -0.46  14.Nxc7 Rf6
 38/46-  02:20   425,877k  3,038k  -0.71  14.Nxc7 Rf6
 38/46-  03:29   634,554k  3,033k  -1.03  14.Nxc7 Rf6
 38/46-  05:47   1,052,755k  3,030k  -1.47  14.Nxc7 Rf6
 38/59  08:42   1,577,121k  3,016k  -1.61  14.Rc3 Rf7 15.a5 Rg7 16.Qc1 Be6 17.Qxf4 Qxf4 18.Nxf4 Bxc4 19.Rb1 Rag8 20.Bxg3 Rxg3 21.Rb2 Rf8 22.Ne2 Bxe2 23.Rxe2 Rc8 24.Rb2 Ng4+ 25.Kg1 Kg8 26.b6 axb6 27.axb6 cxb6 28.c7 Kf7 29.Rbb3 Ne5 30.Rxb6 Ke7 31.Kh2 Kd7 32.Rb7 Ng4+ 33.Kh1 h3 34.gxh3 Nf2+ 35.Kh2 Nxe4 36.Rb8 Nxc3 37.Rxc8 Ne2
...
 39/63  16:51   3,034,187k  3,000k  -1.84  14.Rc3 Rf7 15.a5 Rg7 16.Qd2 Be6 17.Qxf4 Qxf4 18.Nxf4 Bxc4 19.Rb1 Rag8 20.Bxg3 Rxg3 21.b6 cxb6 22.axb6 axb6 23.c7 b5 24.Rxb5 Bxb5 25.c8Q Rxc8 26.Rxc8 Bf1 27.Rc7+ Rg7 28.Rc1 Bc4 29.Rd1 Rf7 30.Nh3 Rf6 31.Rb1 Rf8 32.Rd1 Rd8 33.Nf4 Kh6 34.Rd4 Kg5 35.Nh3+ Kf6 36.Nf4 Be6 37.Rd1 Rd7 38.Rd4 Ng6 39.Nxg6 Kxg6 40.Rd1 Kg5 41.g3


- By MrKris (***) Date 2021-02-23 10:09
https://tcec-chess.com/#div=sfb2&game=1&season=20
S20 - Sufi Bonus 2 - completed

An excellent showing by Lc0.
The openings were the same:
Superfinal:  Stockfish 53.0-47.0 Lc0
Sufi Bonus 2:      Lc0 57.5-42.5 Dragon

opening pairs
first game #:
#1 #3 #5 #7 #9             LCZero 0.27.0d_JH.94-100
1. 1. 1. 1½ 1.             57.5/100
1½ 1. 1. 1. 1. (#+10)                      42.5/100
1. 1. 1. 1. .5 (#+20)          KomodoDragon 2657.00
1. 1½ 1½ 1½ 1½ (#+30)        
1. 1½ 1½ 1. 1½ (#+40)      Opening rev. game pairs:
1. 1. 1½ 1½ 1. (#+50)
1½ 1. 1. .5 1. (#+60)      1.5/2 : LcZero 19 38%
1½ 1. 1½ 1. 1. (#+70)              Dragon  4  8%  
1. 1. .5 1½ .5 (#+80)                           
1½ 1½ 1½ 1. 1½ (#+90)      1.0/2 : each   27 54%
 
Up Topic The Rybka Lounge / Computer Chess / TCEC 20 Sufi Bonus: Lc0 vs. Dragon

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