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Up Topic The Rybka Lounge / Computer Chess / CCC Rapid 2021 (15|3)
- By MrKris (***) Date 2021-02-06 18:32
https://www.chess.com/computer-chess-championship
Format, Results and Upcoming

CCC Rapid 2021: Qualifiers
engines: 1st Rubichess, 4th Defenchess, 3rd Arasan, 8th Wasp, 2nd Winter, 6th Fabchess, 7th Weiss, 5th Koivisto
time: 15m+3s ; book: 2-ply balanced ; 5 rounds ; 280 games ; ~7 days

CCC Rapid 2021: NNUE League
engines: 1st Dragon, 3rd Igel, 4th Nemorino, 8th Minic, 5th Pedone, 6th Seer, 7th Halogen, 2nd Ethereal
time: 15m+3s
book: 2-ply balanced
5 rounds
280 games
~7 days

CCC Rapid 2021: Main League
engines: 1st Stockfish Classic, 2nd-3rd Stoofvlees, 4th Komodo, 2nd-3rd SlowChess, 5th Xiphos, 6th RofChade, 7th Rubi qualifier #1, 8th Winter qualifier #2
15m+3s ; Feobos (c3) ; 6 rounds ; 336 games ; ~8 days

CCC Rapid 2021: NN vs Classic   {in roughly 6 hours}
engines:
Stockfish
Leela
Dragon #1 NNUE League
Ethereal #2 NNUE League
Igel #3 NNUE League
Stockfish Classic #1 Main League
SlowChess #2 Main League
Stoofvlees #3 Main League
Komodo #4 Main League
Xiphos #5 Main League
time: 15m+3s ; book: Feobos (c3) (not same as main league) ; 5 rounds ; 450 games ; ~11.5 days

CCC Rapid 2021: Elite Round
Engines ranked #1 to #6 of the "NN vs Classic" event. One engine max from the same engine family.
15m+3s ; 8 moves Pohl's Unbalanced Human Openings ; 20 rounds ; 600 games ; ~15 days

CCC Rapid 2021: Finals
Engines ranked #1 and #2 in the elite round
15m+3s ; 8 moves Pohl's Unbalanced Human Openings (different than the elite round) ; 20 rounds ; 600 games ; ~15 days

In the NNUE League Ethereal ( http://talkchess.com/forum3/viewtopic.php?f=2&t=75335&sid=dcc72fc110d28cbbc9be8becb834f488&start=140#p875758 ) got 9 draws and 1 loss vs. Dragon but came in 2nd to it with 43.0/70 vs. 53.5/70.
[Event "CCC Rapid 2021: NNUE League (15|3)"]
[Site "chess.com"]
[Date "2021.01.23"]
[Round ""]
[White "Dragon"]
[Black "Ethereal"]
[Result "1-0"]
[ECO "A20"]
[GameDuration "00:34:54"]
[GameEndTime "2021-01-23T22:53:31.378 PST"]
[GameStartTime "2021-01-23T22:18:37.024 PST"]
[Opening "English Opening"]
[PlyCount "125"]
[TimeControl "900+3"]

1. c4 e5 {Book.} 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. d3 a5 6. e4 Nge7 7. Nb5 Nd4 8. Nxd4
exd4 9. h4 h5 10. Nh3 d6 11. b3 O-O 12. O-O c5 13. Bg5 Qe8 14. Bxe7 Qxe7 15. Nf4
Bd7 16. Nd5 Qd8 17. a4 Bc6 18. f4 Bxd5 19. cxd5 Rb8 20. Kh2 Qc7 21. e5 dxe5
[FEN "1r3rk1/1pq2pb1/6p1/p1pPp2p/P2p1P1P/1P1P2P1/6BK/R2Q1R2 w - - 0 22"]
22. f5 Bh6 23. Be4 Kg7 24. Ra2 Be3 25. f6+ Kg8 26. Raf2 b5 27. axb5 Rxb5 28. Rf5 Qd7
29. Rxe5 Rb6 30. Rxh5 a4 31. Re5 Rxb3 32. Bg2 Rb2 33. Qf3 Rb6 34. h5 a3 35. Qe4
g5 36. Rff5 Kh8 37. Re7 Qd6 38. Qg4 Bd2 39. Re2 Bc1 40. Rf1 c4 41. Rxc1 Qxf6 42.
Rxc4 Qd8 43. Rc6 Rxc6 44. dxc6 f5 45. Qf3 Qd6 46. Qd5 Qxd5 47. Bxd5 f4 48. gxf4
gxf4 49. Rg2 f3 50. Rg8+ Rxg8 51. Bxg8 Kxg8 52. c7 a2 53. c8=Q+ Kg7 54. h6+ Kxh6
55. Qh8+ Kg5 56. Qxd4 Kf5 57. Kg1 Kg5 58. Qd5+ Kf4 59. Qxa2 Ke3 60. Qc4 Kd2 61.
Kf2 Kd1 62. Kxf3 Ke1 63. Qc1# 1-0
- By MrKris (***) Date 2021-02-08 00:40
CCC Rapid 2021: NN vs Classic - recently started - https://www.chess.com/computer-chess-championship

Stockfish made an early gambit, then with OCB's + the major pieces black's light-square color complex weakness was losing. [Event "CCC Rapid 2021: NN vs Classic (15|3)"]
[Site "chess.com"]
[Date "2021.02.07"]
[Round "1"]
[White "Stockfish"]
[Black "Komodo"]
[Result "1-0"]
[ECO "B15"]
[Opening "Caro-Kann"]
[Variation "Gurgenidze: 4.e5 Bg7 5.f4 h5"]
[TimeControl "900+3"]
[Termination "normal"]
[PlyCount "173"]
[WhiteType "human"]
[BlackType "human"]

1. e4 c6 2. d4 g6 3. Nc3 Bg7 4. f4 d5 5. e5 h5 6. Be3 Nh6 7. Nf3 Bg4 8. Be2
Nd7 {Book.} 9. Bf2 {CCC +0.36} Nf5 {CCC +0.32} 10. h3 Bxf3 11. Bxf3 e6 12.
Qd3 Qe7 13. g3 f6 14. Ne2 fxe5 15. dxe5 Qb4+ 16. c3 {pawn sacrifice} Qxb2
{white will be a pawn down until it is winning}
[FEN "r3k2r/pp1n2b1/2p1p1p1/3pPn1p/5P2/2PQ1BPP/Pq2NB2/R3K2R w KQkq - 0 17"]
17. O-O Qa3 18. Nd4 Nc5 19. Qc2 O-O-O 20. Kg2 Bf8 21. Rab1 Rd7 22. Rb4 Nxd4 23.
Rxd4 Rg8 24. c4 {CCC 0.00 , 24...Rc7} Kb8 {CCC 0.00} 25. h4 {CCC +0.67}
Rgg7 26. Rb1 Rd8 27. Be1 Rc8 28. Bb4 Qa6 29. Be2 Qb6 30. a4 Qc7 31. a5 Qf7
32. Bxc5 Bxc5 {CCC 0.00 ---OCB but with all majors also---} 33. Rdd1 {CCC
+0.85} d4 34. a6 b6 35. Kh2 Kc7 36. Bf3 Qe8 37. Qe4 Kb8 38. Rd3 Rcc7 39.
Rd2 Qc8 40. Ra1 Qd7 41. Bg2 Qc8 42. Rd3 Rg8 43. Rb3 Qd7 44. Qd3 Kc8 45. Be4
Qe8 46. Qf3 Rh8 47. Kh3 Rf8 48. Rd1 Rg8 49. Rb2 Kb8 50. Ra1 Be7 51. Rbb1
Bc5 52. Ra5 Qf8 53. Kg2 Bb4 54. Ra4 c5 {CCC +0.61} 55. Qd3 {CCC +2.12} Rcg7
56. Ra2 Bc3 57. Kh2 Kc7 58. Rc2 Qe7 59. Bf3 Rb8 60. Qe4 Qe8 61. Rg2 Rd7
{CCC +1.34} 62. Qc6+ {CCC +3.24} Kd8 63. Rd1 Qf7 64. Be2 Rc8 65. Qf3 Kc7 {CCC +1.30}
[FEN "2r5/p1kr1q2/Pp2p1p1/2p1P2p/2Pp1P1P/2b2QP1/4B1RK/3R4 w - - 22 66"]
66. Bd3 {CCC +4.37} Kb8 67. g4 Rf8 68. Rf1 Rh8 69. gxh5 Qe7 70. Kh3 Rxh5
71. Rg5 Rh8 {CCC +3.52} 72. Rfg1 {CCC +7.21} Rc7 73. Qe4 b5 74. Be2 Bd2 75.
R1g4 bxc4 {CCC +15.35} 76. Rxg6 {CCC +M19} Qf7 77. Bf3 Re7 78. Rg7 Qxg7 79.
Qa8+ Kc7 80. Qb7+ Kd8 81. Rxg7 Rxg7 82. Qxg7 Be3 83. Qxh8+ Kc7 84. Qg7+ Kb6
85. Qb7+ Ka5 86. Bc6 Bxf4 87. Qb5# 1-0
- By MrKris (***) Date 2021-02-09 05:57
https://www.chess.com/computer-chess-championship

NN vs Classic - in progress
1   Stockfish   12.0/18  undefeated
2-3 Lc0         11.0/18  undefeated*
2-3 Dragon      11.0/18  undefeated*
4   Sf Classic  10.5/18  undefeated
5   {Stoofvlees} 9.0/18
6   Komodo       8.5/18
7   SlowChess    8.0/18
8-9 Xiphos       7.5/18
10  Ethereal     6.5/18
                        *1 same-color-won opening rev. pair
                        {}=private engine

                       
Even on machine Stockfish and Lc0 take only seconds to find white winning (3+) after 22...Qf7?? 23.Qc7!.
Interestingly 23.Qc7 is the only move that wins, alternatives are about equal, shown at the bottom.
[Event "CCC Rapid 2021: NN vs Classic (15|3)"]
[Site "chess.com"]
[Date "2021.02.08"]
[Round "1"]
[White "Lc0"]
[Black "Stoofvlees"]
[Result "1-0"]
[BlackElo "2000"]
[ECO "A38"]
[Opening "English"]
[Time "21:27:08"]
[WhiteElo "2000"]
[TimeControl "900+3"]
[Termination "normal"]
[PlyCount "77"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. c4 Nc6 5. O-O Nf6 6. Nc3 d6 7. a3 O-O 8.
d3 Ne8 9. Rb1 a5 10. Be3 b6 11. d4 Bd7 12. b3 e5 13. dxe5 dxe5 14. Qd2 f5
15. Rbd1 e4 16. Ng5 Nf6 17. h4 h6 18. Nh3 Kh7 19. Nf4 Re8 20. Bh3 Rb8 21.
Nb5 Qe7 22. Qd6 {CCC +0.53}
[FEN "1r2r3/3bq1bk/1pnQ1npp/pNp2p2/2P1pN1P/PP2B1PB/4PP2/3R1RK1 b - - 9 22"]
22... Qf7 {?? Here at 3 mins. wh+: Stockfish 22...Red8 0.88 ; Lc0 22...Ne5 0.55} 23.
Qc7 {! CCC +4.50} Rf8 24. h5 g5 25. Nd6 Qg8 26. Nd5 Nxd5 27. Rxd5 Rbd8 28.
Nxf5 Qe6 29. Rfd1 Nd4 30. Bxd4 cxd4 31. Nxg7 Qxh3 32. Nf5 Kg8 33. R1xd4 e3
34. Nxh6+ Kh8 35. f3 Rxf3 36. Qxd8+ Be8 37. Qxe8+ Kg7 38. Qg8+ Kf6 39. Qf7# 1-0
FEN: 1r2r3/3b1qbk/1pnQ1npp/pNp2p2/2P1pN1P/PP2B1PB/4PP2/3R1RK1 w - - 10 23 

Stockfish_21013116: PV=4 best at bottim (2700X 14ths)
---------------------------------------------------------------------------
 41/58  04:15    3,549,093k  13,883k  +0.05  23.Nd5 Nxd5 24.Qxd5 Qxd5 25.Rxd5 Be6 26.Rd6 Rbc8 27.Rb1 Bf8 28.Bf1 Bxd6 29.Nxd6 Re7 30.Nxc8 Bxc8 31.Kg2 Nd4 32.Bf4 Rd7 33.b4 cxb4 34.axb4 a4 35.Rb2 a3 36.Ra2 Ra7 37.Be3 Nc6 38.Bxb6 Nxb4 39.Bxa7 Nxa2 40.Bc5 Be6 41.Bxa3 Bxc4 42.Bb2 Nb4 43.Bc3 Nd5 44.Bd4 Kg8 45.Bb2 Kf7
 41/51  04:15    3,549,093k  13,883k  +0.12  23.a4 Ne5 24.Qc7 Bxb5 25.Qxf7 Nxf7 26.cxb5 h5 27.Bd2 Rbc8 28.Rfe1 c4 29.bxc4 Rxc4 30.Be3 Rxa4 31.Bxb6 Rb4 32.Bxa5 Rxb5 33.Bc3 Rc8 34.Ba1 Rb6 35.f3 Re8 36.Bf1 Rb7 37.Rb1 Ra7 38.Bd4 Rd7 39.Red1 Ree7 40.Bg2 exf3 41.exf3 Rd6 42.Bc5 Rxd1+ 43.Rxd1 Rd7 44.Rb1 Bh6 45.Ne6 Nd8 46.Nxd8 Rxd8 47.Bf1 Bg7
 41/72  04:15    3,549,093k  13,883k  +0.46  23.Bc1 Red8 24.Qc7 Nd4 25.Nxd4 Ne8 26.h5 g5 27.Bxf5+ Kg8 28.Qa7 cxd4 29.Bxe4 gxf4 30.Bxf4 Rbc8 31.Qxb6 Nf6 32.Bb7 Re8 33.Bxc8 Bxc8 34.Qxd4 Qxh5 35.f3 Rxe2 36.Qd8+ Kf7 37.Qc7+ Kg6 38.Rf2 Rxf2 39.Kxf2 Bg4 40.Qc6 Qh2+ 41.Ke3 Qg2 42.Be5 Bf5 43.b4 axb4 44.axb4 h5 45.b5 Kf7 46.Qc7+ Kg6 47.Qd6 Kf7 48.Bxf6 Bxf6 49.Kf4 Be6 50.b6 Qe2 51.b7
 41/61  04:15    3,549,093k  13,883k  +3.29  23.Qc7 Rec8 24.h5 g5 25.Bxf5+ Kg8 26.Qxd7 Nxd7 27.Be6 Nde5 28.Bxf7+ Nxf7 29.Nd5 Re8 30.Kg2 Ne7 31.a4 Be5 32.Nxe7+ Rxe7 33.Rd5 Re6 34.Rfd1 Rbe8 35.Bc1 Kg7 36.Rd7 R8e7 37.Rxe7 Rxe7 38.f4 exf3+ 39.exf3 Ba1 40.f4 g4 41.Kf2 Re6 42.Be3 Bf6 43.Rd5 Kf8 44.Rd7 Re7 45.Rc7 Rxc7 46.Nxc7 Ke7 47.Nd5+ Ke6 48.Nxb6 Bd4 49.Bxd4 cxd4 50.Ke2 Kd6
- By MrKris (***) Date 2021-02-10 03:43
https://www.chess.com/computer-chess-championship

NN vs Classic - in progress
1    Stockfish    16.5/26  undefeated
2    Dragon       16.0/26  undefeated*
3-4  Lc0          15.0/26  undefeated*
3-4  Sf Classic   15.0/26  undefeated
5    {Stoofvlees} 13.5/26
6    Komodo       12.5/26
7    SlowChess    11.5/26
8-10 Xiphos       10.0/26
8-10 Ethereal     10.0/26
8-10 Igel         10.0/26
                         *1 same-color-won opening rev. pair vs. each other
                         {}=private engine


A very short, considering CCC's play-to-mate, win by Stockfish Classic; it was able to hold to a draw in the colors reversed below.
[Event "CCC Rapid 2021: NN vs Classic (15|3)"]
[Site "chess.com"]
[Date "2021.02.09"]
[Round "1"]
[White "Stockfish Classic"]
[Black "Stoofvlees"]
[Result "1-0"]
[ECO "A13"]
[Opening "English"]
[Variation "1...e6 2.Nf3"]
[TimeControl "900+3"]
[Termination "normal"]
[PlyCount "73"]

1. Nf3 e6 2. c4 g5 3. h3 Bg7 4. d4 h6 5. e4 Ne7 6. Nc3 d6 {Book. A very unusual opening.} 7. Be2 {As in 2016, CHN Rapid Ch., Bu 2698 1-0 Li 2616, in 27 moves!} f5 8. exf5
exf5 9. O-O O-O 10. Re1 Ng6 11. Be3 Nc6 12. Bd3 Nce7 13. a4 c6 14. Ra3 g4
15. hxg4 f4 16. Bd2 Bxg4 17. Qb1 Bxf3 18. Bxg6 Nxg6 19. Qxg6 Rf6 20. Qd3
Bg4 {CCC +0.67}
[FEN "r2q2k1/pp4b1/2pp1r1p/8/P1PP1pb1/R1NQ4/1P1B1PP1/4R1K1 w - - 3 21"]
21. d5 {CCC +1.82 <<<< It turns out opposite of what it appears:
black's K will be weaker than whites !? >>>>} Rf8 22. Ne4 Qh4 {CCC +0.29}
23. Rb3 {CCC +3.73} f3 24. Rxb7 fxg2 25. Ng3 Bf5 26. Bc3 Be5 27. Qd2 Bc8
28. Rc7 Bg4 {CCC +3.23} 29. Rxe5 {CCC +12.27 , Exchange sacrifice, black's
attack looked dangerous but it did not work.}
[FEN "r4rk1/p1R5/2pp3p/3PR3/P1P3bq/2B3N1/1P1Q1Pp1/6K1 b - - 0 29"]
29... dxe5 30. Bxe5 Rf3 31. Rg7+ Kf8 32. Qb4+ Ke8 33. Rg8+ Kf7 34. Qb7+ Bd7 35. Qxd7+ Qe7 36.
Rg7+ Kf8 37. Qxe7# 1-0

The colors reversed was tactical in the utmost extreme.
[Event "CCC Rapid 2021: NN vs Classic (15|3)"]
[Site "?"]
[Date "2021.02.09"]
[Round "1"]
[White "Stoofvlees"]
[Black "Stockfish Classic"]
[Result "1/2-1/2"]
[BlackElo "2400"]
[ECO "A13"]
[Opening "English"]
[Variation "1...e6 2.Nf3"]
[WhiteElo "2400"]
[TimeControl "900+3"]
[Termination "normal"]
[PlyCount "153"]
[WhiteType "human"]
[BlackType "human"]

1. Nf3 e6 2. c4 g5 3. h3 Bg7 4. d4 h6 5. e4 Ne7 6. Nc3 d6 7. Bd3 O-O 8. Ne2
c5 9. O-O f5 10. exf5 exf5 11. Bc2 Nbc6 12. d5 g4 13. Nh2 Ne5 14. Nf4 Qe8
15. a4 h5 16. Ra3 Qf7 17. Rg3 Bd7 18. hxg4 fxg4 19. f3 h4 20. Rxg4
{Exchange sacrifice.} Nxg4 21. fxg4 Be5 22. Rf3 Qg7 23. Nh5 Qh8 24. Rh3
Rae8 25. Rxh4 Ng6 {N sacrifice.} 26. Bxg6 Bd4+ 27. Kh1 Bxa4 {B offer.} 28.
b3 Bxb3 {B offer.} 29. Qd2 Rf2 {R+R for Q sacrifice.} 30. Bxe8 Rxd2 31.
Bxd2 Bf2 {! 32...Qa1+ threat.} 32. Nf3 Bxc4
[FEN "4B1kq/pp6/3p4/2pP3N/2b3PR/5N2/3B1bP1/7K w - - 0 33"]
33. Bg5 {!! Exchange sacrifice.} (33. Rh3 {??} Qa1+ {Stockfish at 3 mins. says black is winning:
-5.61 !?}) 33. .. Bxh4 {Stockfish 1 min., 59 plies, says 0.00 !?} 34. Nxh4
{< White B+N+N vs. black's Q. >} Bd3 35. Bf6 Qh7 36. Bg7 c4 37. Nf3 Qxg7 38.
Nxg7 Kxg7 {Black has only 1 pawn vs. the white N.} 39. Kg1 c3 40. Nd4 c2
41. Nb3 Bc4 42. Nc1 Bxd5 {< But now white N + 2 isolated doubled pawns
vs. black's 4 connected passed pawns. >} 43. Ba4 Be4 44. g3 d5 45. Kf2
d4 46. Ke1 d3 47. Kd2 a6 48. Bd7 Kf6 49. Nb3 b6 50. Kc1 Bd5 51. Nd2 Ke5 52.
g5 b5 53. g6 b4 54. g7 Kf6 55. Bc6 Be6 56. Be4 Kxg7 57. Bxd3 b3 58. Bxa6
Kg6 59. Ne4 Kf5 60. Nc5 Bd5 61. Bc8+ Ke5 62. Kd2 Bc4 63. Bg4 Kd4 64. Na4
Bb5 65. Nb2 Bc6 66. Bf5 Bf3 67. Bd7 Bd5 68. g4 Be4 69. Ba4 Bd5 70. Be8 Ke5
71. Nd3+ Kd4 72. g5 Be4 73. Nb2 Ke5 74. Nc4+ Kf4 75. g6 b2 76. Nxb2 c1=Q+
77. Kxc1 1/2-1/2
- By MrKris (***) Date 2021-02-11 07:15 Edited 2021-02-11 14:13
https://www.chess.com/computer-chess-championship

NN vs Classic - in progress
1    Stockfish    23.5/36  undefeated
2    Dragon       22.5/36 
3    Lc0          22.0/36  undefeated
4    Sf Classic   20.0/36
5    {Stoofvlees} 18.5/36
6    Komodo       17.5/35*
7    SlowChess    16.5/36
8-9  Igel         13.0/36
8-9  Ethereal     13.0/35*
10   Xiphos       12.5/36
                           {}=private engine
                           *=game in progress


White's attack did not work out. They have played 4 games so far, the other 3 draws.
[Event "CCC Rapid 2021: NN vs Classic (15|3)"]
[Site "chess.com"]
[Date "2021.02.06"]
[Round "1"]
[White "Dragon"]
[Black "Lc0"]
[Result "0-1"]
[ECO "A41"]
[GameDuration "00:32:29"]
[GameEndTime "2021-02-06T19:16:29.244 PST"]
[GameStartTime "2021-02-06T18:43:59.368 PST"]
[Opening "Old Indian defense"]
[PlyCount "124"]
[TimeControl "900+3"]

1. d4 d6 2. c4 e5 3. Nf3 Nd7 4. Nc3 g6 5. e4 Bg7 6. Be2 Ne7 7. d5 O-O {Book.} 8. h4 h6
9. h5 g5 10. g4 a6 11. Qc2 Nf6 12. Nxg5 {N sacrifice} hxg5 13. Bxg5 Nh7 14. Bd2 f6 15. h6 Bh8
16. O-O-O Ng6 17. Bd3 Ng5 18. h7+ Kf7 19. Rdf1 Nf3 20. Qd1 Nxd2 21. Qxd2 Qe7 22.
Ne2 Ke8 23. c5 dxc5 24. Qh6 Qg7 25. Qe3 b6 26. f3 Bd7 27. Kb1 Kd8 28. Bc4 b5 29.
Bb3 c4 30. Ng3 cxb3 31. Rc1 bxa2+ 32. Ka1 {CCC -1.51} Ne7 {CCC -2.04} 33. Qc5 Rc8 34. Qa7 Ke8 35. Rcg1
Rf7 36. Rh2 Qg6 37. Rgh1 Rg7 38. Rh5 Qf7 39. Rh6 Rg6 40. R6h3 c5 41. Rh5 c4 42.
Rf1 b4 43. Qb6 b3 44. Qb4 Qf8 45. Qb7 a5 46. Rd1 f5 47. Ne2 fxe4 48. Nc3 e3 49.
Rh2 Qxf3 50. Re1 a4 51. Qb4 Nxd5 52. Qb7 Rgc6 53. g5 a3 54. Na4 e4 55. Qb5 Qg3
56. Reh1 Rh6 57. Qxd7+ Kxd7 58. gxh6 axb2+ 59. Nxb2 Qxh2 60. Rxh2 c3 61. Rc2
cxb2+ 62. Rxb2 Rc1# 0-1
- By MrKris (***) Date 2021-02-14 10:17
https://www.chess.com/computer-chess-championship

NN vs Classic 15|3 - in progress
                /62  Lc0 Dra SfC
1   Stockfish  40.5  4-4 3-3 4-4
2-3 Lc0        38.0
2-3 Dragon     38.0
4   Sf Classic 35.5
5   Stoofvlees 31.5  -private
6   Komodo     30.0
7   SlowChess  27.5
9   Ethereal   24.5
9   Igel       22.5
10  Xiphos     22.0
- By MrKris (***) Date 2021-02-17 19:48
https://www.chess.com/computer-chess-championship#event=ccc-rapid-2021-nn-vs-classic

NN vs Classic 15|3 - completed
                /90      
1   Stockfish  58.0 *
2   Lc0 .27r1  54.0 * -J94-100
3-4 Sf Classic 52.5
3-4 Dragon dev 52.5 *
5   Stoofvlees 45.5 * -private
6   Komodo dev 42.0 
7   SlowChess  41.0 *
8   Ethereal   38.0 * -TCEC 20 NN
9   Igel       33.5
10  Xiphos     33.0
                    *=advance to the Elite

Top 4 places only - NN vs Classic 15|3
                           Sf      Lc0    SfCl     Dr
1   Stockfish   16.0/30  ------  5.0/10  5.0/10  6.0/10
2   Lc0 .27r1   15.5/30  5.0/10  ------  4.5/10  6.0/10
3-4 Sf-Classic  14.5/30  5.0/10  5.0/10  ------  4.5/10
3-4 Dragon dev  13.5/30  4.0/10  4.0/10  5.5/10  ------


Stockfish 1-0 Dragon (rev. was a draw).
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Bg4 7. Be3 Nfd7 8. d5
c6 9. Rc1 a5 10. Nd4 Bxe2 11. Qxe2 Nc5 12. h4 {N no games in ChessTempo.com.}
(  {In 2001, Gustafsson-2535 1-0 Brestian-2421, 41 moves} 12.O-O Qd7 13.f3 Nba6 14.Rb1 Nc7 15.Rfd1 cxd5 16.cxd5 Na4 17.Nxa4 Qxa4 18.Rbc1 Qd7 19.Rc2 Na6 20.Rdc1 {etc.} )
12... Nbd7 13. h5 Qc7 14. Kf1 Rae8 15.
g3 e6 16. Kg2 a4 17. Rhd1 Be5 18. Bh6 Bg7 19. Bxg7 Kxg7 20. Qd2 Ne5 21. b4 axb3
22. axb3 Kg8 23. Qe3 Qa5 24. Rb1 Ncd7 25. Qd2 exd5 26. exd5 Nf6 27. h6 Qd8 28.
Re1 cxd5 29. cxd5 Neg4 30. f3 Rxe1 31. Rxe1 Ne5 32. Ndb5 Re8 33. Qd4 Kf8 34. g4
g5 35. Ra1 Qe7 36. Ra4 Rc8 37. Qd2 Ne8 38. Ne4 f6 39. Nd4 Ng6 40. Ne6+ Kg8 41.
Ng3 Qd7 42. Qe2 Ne5 43. Nf5 Rb8 44. Ra5 Ng6 45. Qc2 Kh8 46. Kg3 Kg8 47. Qc3 Rc8
48. Qe3 Ne5 49. Qb6 Rb8 50. Ra4 Kf7 51. Qa7 Qc8 52. Ra2 Qc3 53. Nfd4 Nd7 54. Nc6
f5 55. Nxb8 Nc5 56. Nxc5 fxg4 57. Qxb7+ Kg6 58. Qe7 Qxf3+ 59. Kh2 Nf6 60. Nbd7
g3+ 61. Kg1 Nxd7 62. Ne4 Qf4 63. Re2 Nf8 64. Qg7+ Kh5 65. Nf6+ Qxf6 66. Qxf6 Ng6
67. Re8 Kg4 68. Qxg6 hxg6 69. h7 Kf5 70. h8=Q g2 71. Qd4 g4 72. Rf8+ Kg5 73.
Qf4+ Kh5 74. Rh8# 1-0
- By MrKris (***) Date 2021-02-19 05:47
https://www.chess.com/computer-chess-championship#event=ccc-rapid-2021-elite-round

CCC Rapid 2021: Elite Round (15|3)

1   Stockfish   18.5/24
2   Lc0         13.5/24
3   Dragon      11.5/22
4  {Stoofvlees}  9.5/22
5-6 Ethereal     7.5/22
5-6 SlowChess    7.5/22
    

Stockfish (6feb2021) is 1st by a 5 point margin already.

        **********************************************
        *  Stockfish has won every opening-reversed  *
        *  game-pair against every opponent!!!       *
        *  All by 1.5/2 and a 2.0/2 vs. SlowChess.   *
        **********************************************


The book is "8 moves Pohl's Unbalanced Human Openings." (site 'Info' button)
- By MrKris (***) Date 2021-02-20 04:09
https://www.chess.com/computer-chess-championship#event=ccc-rapid-2021-elite-round

CCC Rapid 2021: Elite Round (15|3)
- in progress

1   Stockfish   26.5/36 +17 =19 -0!!
2   Lc0         21.0/36 +12 =17 -7
3   Dragon      18.0/36
4   SlowChess   14.5/35
5  {Stoofvlees} 14.0/35
6   Ethereal    13.0/36


The top 2 advance to the final.

[Event "CCC Rapid 2021: Elite Round (15|3)"]
[Site "chess.com"]
[Date "2021.02.19"]
[Round ""]
[White "Lc0"]
[Black "Dragon"]
[Result "1-0"]
[ECO "C01"]
[GameDuration "00:37:27"]
[GameEndTime "2021-02-19T09:46:22.831 PST"]
[GameStartTime "2021-02-19T09:08:55.427 PST"]
[Opening "French"]
[PlyCount "183"]
[TimeControl "900+3"]
[Variation "Exchange Variation"]
[FEN "2r4k/4rbpp/2n2p2/1p1p3P/pP1P1Q1R/6P1/1P3Pq1/KB1R2N1 b - - 10 44"]

44. .. Re4 45. Bxe4 Qxe4 46. Qd2 Qe6 47.
Rc1 Na7 48. Ne2 Kg8 49. Nf4 Qe8 50. Rxc8 Nxc8 51. Rh1 Nd6 52. Re1 Qd8 53. Qc2
Qd7 54. Ka2 Qb7 55. g4 Qd7 56. Qc5 Ne4 57. Qb6 Qd6 58. Qxd6 Nxd6 59. Re7 Kf8 60.
Rd7 Ne4 61. Rb7 Nd6 62. Rd7 Ne4 63. Rb7 Nd6 64. Ra7 Ne4 65. f3 Ng5 66. Rb7 Be8
67. b3 axb3+ 68. Kxb3 Bc6 69. Rc7 Be8 70. Kc3 Bf7 71. Rb7 Be8 72. Kd3 Bc6 73.
Rc7 Be8 74. Nxd5 Nxf3 75. Nf4 Bf7 76. d5 g6 77. d6 Ke8 78. h6 Kd8 79. Ke3 Ng5
80. Nh3 Nf3 81. Rxf7 Ne5 82. Rxh7 Nxg4+ 83. Kf3 Ne5+ 84. Ke4 g5 85. Nxg5 Kc8 86.
Rg7 Kb8 87. Kf5 Nc4 88. h7 Nxd6+ 89. Kg6 fxg5 90. h8=R+ Nc8 91. Kxg5 Ka8 92.
Rxc8# 1-0
- - By MrKris (***) Date 2021-02-23 09:38
https://www.chess.com/computer-chess-championship#event=ccc-rapid-2021-elite-round

CCC Rapid 2021: Elite Round (15|3) - in progress

1   Stockfish   56.0/80 !!
2   Lc0         46.5/80
3   Dragon      45.0/80
4  {Stoofvlees} 33.0/80
5   SlowChess   31.0/80
6   Ethereal    28.5/80
                        The top 2 advance to the final.


- Opening pair-wise Stockfish is undefeated, only 2 losses then both won in the colors reversed!

- Stockfish is 11-5 (+6) vs. #2 Lc0 and 10-6 (+4) vs. #3 Dragon!
Parent - - By MrKris (***) Date 2021-02-25 15:12 Edited 2021-02-26 03:16
Stockfish is still far ahead of the rest.

Its latest win over Lc0 (the rev. was a draw).
Stockfish, even on my old machine, finds 38.f4 instead of Lc0's @ CCC's losing 38.Bf2??. [Event "Rapid 2021 Elite"]
[Site "chess.com"]
[Date "2021.02.25"]
[Round ""]
[White "Lc0"]
[Black "Stockfish"]
[Result "0-1"]
[Time "06:48:12"]
[TimeControl "600+2"]
[SetUp "1"]
[FEN "8/pr3pk1/4p1p1/4P3/P1p5/2P1BPKp/1P6/1R3B1r w - - 2 38"]
[Termination "normal"]
[PlyCount "1"]

{Stockfish at CCC 0.00 = drawish.} 38. f4 {! Stockfish here -0.12/48, 2 mins.} ({>>>>} 38.
Bf2 {?? Played by Lc0 at CCC.} Rb8 {Stockfish at CCC -5.57 =  black is clearly winning. The CCC game finished:}
39. Ra1 Rh8 40. Re1 h2
41. Bg2 Rxe1 42. Bxe1 h1=Q 43. Bxh1 Rxh1 44. Bf2 a6 45. Kf4 Rb1 46. Bh4 Rxb2 47.
Ke3 Kh6 48. f4 Kh5 49. Bg5 Ra2 50. Kd4 Rxa4 51. Bd8 Kg4 52. Bg5 a5 53. Bh6 Ra2
54. Kxc4 Rb2 55. Bf8 a4 56. Ba3 Rb3 57. Bc1 Rb1 58. Ba3 Kxf4 59. Kc5 Rb3 60. Bb4
a3 61. Kc4 Rxb4+ 62. Kxb4 a2 63. Kb3 a1=Q 64. c4 Kxe5 65. Kb4 Kd6 66. c5+ Kd5
67. Kb3 Kd4 68. Kc2 Qa2+ 69. Kd1 Kd3 70. Ke1 Qe2# 0-139. Ra1 Rh8 40. Re1 h2
41. Bg2 Rxe1 42. Bxe1 h1=Q 43. Bxh1 Rxh1 44. Bf2 a6 45. Kf4 Rb1 46. Bh4 Rxb2 47.
Ke3 Kh6 48. f4 Kh5 49. Bg5 Ra2 50. Kd4 Rxa4 51. Bd8 Kg4 52. Bg5 a5 53. Bh6 Ra2
54. Kxc4 Rb2 55. Bf8 a4 56. Ba3 Rb3 57. Bc1 Rb1 58. Ba3 Kxf4 59. Kc5 Rb3 60. Bb4
a3 61. Kc4 Rxb4+ 62. Kxb4 a2 63. Kb3 a1=Q 64. c4 Kxe5 65. Kb4 Kd6 66. c5+ Kd5
67. Kb3 Kd4 68. Kc2 Qa2+ 69. Kd1 Kd3 70. Ke1 Qe2#) *
Parent - By MrKris (***) Date 2021-02-26 03:21
Very strange about the above position:

Here on my old machine with the old included net Lc0 CPU takes only 40 seconds to find 38.f4! and seems to stay with it. (At CCC Lc0 gpu played 38.Bf2? and lost.)

However: after at 4 minutes it still can not find 38...Rb8 -+ as Sf played at CCC, instead it has 38...a5? 0.07 = or +=.
 
FEN: 8/pr3pk1/4p1p1/4P3/P1p5/2P1BPKp/1P6/1R3B1r w - - 2 38
Lc0 0.27blas included 703810 net: AMD PhIIX6 
 1/2  00:00   2  52  +0.92  38.a5 a6
 1/2  00:00   3  73  +0.95  38.Bg5 Rxb2
 1/2  00:00   4  75  +1.14  38.f4 Rxb2
 2/3  00:00   5  71  +0.65  38.Bg5 Rxb2 39.Bf6+
 2/4  00:00   9  79  +0.46  38.Bg5 Rxb2 39.Bf6+ Kh6
 2/4  00:00   10  85  +0.84  38.a5 Rxb2 39.Rxb2
 2/4  00:00   11  93  +0.77  38.Bg5 Rxb2 39.Rxb2 Rxf1
 2/4  00:00   12  100  +1.16  38.a5 Rxb2 39.Rxb2
 2/4  00:00   18  102  +0.94  38.Bg5 Rxb2 39.Rxb2 Rxf1
 2/5  00:00   19  100  +1.77  38.a5 Rxb2 39.Rxb2 Rxf1 40.Bxa7
... stays at a5:
 6/13  00:03   807  228  +0.80  38.a5 Rb5 39.a6 Ra5 40.Bxa7 Rxa6 41.Bd4 Ra2 42.f4 Rxb2 43.Rxb2 Rxf1 44.Rb4
 6/13  00:07   2k  258  +0.79  38.Bf2 g5 39.a5 Rb5 40.a6 Ra5 41.Bxa7 Rxa6 42.Bd4 Ra4 43.Rd1 Ra2 44.Rb1
 6/13  00:07   2k  259  +0.72  38.a5 Rb5 39.a6 Ra5 40.Bxa7 Rxa6 41.Bd4 Ra2 42.f4 Rxb2 43.Rxb2 Rxf1 44.Rb4
 6/13  00:08   2k  264  +0.74  38.Bf2 g5 39.a5 Rb5 40.a6 Ra5 41.Bxa7 Rxa6 42.Bd4 Ra4 43.Rd1 Ra2 44.Rb1
 6/13  00:08   2k  264  +0.68  38.a5 Rb5 39.a6 Ra5 40.Bxa7 Rxa6 41.Bd4 Ra2 42.f4 Rxb2 43.Rxb2 Rxf1 44.Rb4
 6/14  00:12   4k  301  +0.54  38.a5 a6 39.Bd4 Rb5 40.Bb6 Rd5 41.Be3 Rxa5 42.Bd4 h2 43.Kg2
 7/15  00:12   4k  301  +0.54  38.a5 a6 39.Bd4 Rb5 40.Bb6 Rd5 41.Be3 Rxa5 42.Bd4 h2 43.Kg2
 7/16  00:13   4k  306  +0.52  38.a5 a6 39.Bb6 Rd7 40.Bd4 Rd5 41.f4 Rxa5 42.Rd1 Ra2 43.Be2 Rxd1
 7/17  00:13   4k  311  +0.51  38.a5 a6 39.Bb6 Rd7 40.Bd4 Rd5 41.f4 Rxa5 42.Rd1 Ra2 43.Be2 Rxd1
 7/18  00:13   4k  311  +0.51  38.a5 a6 39.Bb6 Rd7 40.Bd4 Rd5 41.f4 Rxa5 42.Rd1 Ra2 43.Be2 Rxd1
 7/19  00:14   4k  314  +0.50  38.a5 a6 39.Bb6 Rd7 40.Bd4 Rd5 41.f4 Rxa5 42.Rd1 Ra2 43.Be2 Rxd1 44.Bxd1
 7/19  00:14   5k  314  +0.55  38.Bf2 a5 39.f4 Rd7 40.Bd4 Rd8 41.Rd1 Rb8 42.Be2 Rxd1 43.Bxd1 Rxb2 44.Kxh3 Rd2 45.Bf3 Ra2 46.Bc6 Kh6 47.Kg4
 7/19  00:19   7k  343  +0.44  38.Bf2 a5 39.f4 Rd7 40.Bd4 Rd8 41.Rd1 Rh8 42.Re1 h2 43.Kg2 Rg1+ 44.Bxg1 h1Q+
 7/19  00:23   9k  359  +0.44  38.Bd4 a5 39.f4 Rb8 40.Bc5 Rb3 41.Be7 Kg8 42.Bf6 Kh7 43.Rd1
 7/19  00:28   11k  371  +0.42  38.Bd4 a5 39.f4 Rb8 40.Bc5 Rb3 41.Be7 Kg8 42.Bf6 Kh7 43.Rd1 Rxb2 44.Rd8 g5 45.Bxh3 gxf4+
 8/19  00:32   13k  384  +0.38  38.Bd4 a5 39.f4 Rb8 40.Bc5 Rb3 41.Be7 Kg8 42.Bf6 Kh7 43.Rd1 Rxb2 44.Rd8 g5 45.Bxh3 gxf4+
 8/19  00:37   16k  411  +0.38  38.Bd4 a5 39.f4 Rb8 40.Bc5 Rb3 41.Be7 Kg8 42.Bf6 Kh7 43.Rd1 Rxb2 44.Rd8 g5 45.Bxh3 gxf4+
 8/19  00:40   17k  416  +0.42  38.f4 a5 39.Bd4 Rb3 40.Bc5 Kh7 41.Be7 Kg8 42.Bf6 Kh7 43.Rd1 Rxb2 44.Rd8 g5 45.Bxh3
... stays at f4:
 11/25  03:23   122k  600  +0.26  38.f4 a5 39.Bd4 Kf8 40.Bf2 Kg7 41.Be3 Kg8 42.Kf3 Rb8 43.Bd4 Kg7 44.Kg3 Rb7 45.Bc5 Rd7 46.Bd4 Rb7
!!!
Parent - - By user923005 (****) Date 2021-02-26 05:49
SF took everyone out behind the wood shed and gave them an old-fashioned poleaxing.
Parent - By MrKris (***) Date 2021-02-26 20:18
google.com
People also ask
What does it mean to be poleaxed?
also poleaxed. adjective [usually verb-link ADJECTIVE] If someone is pole-axed, they are so surprised or shocked that they do not know what to say or do. [mainly British, informal] Sitting pole-axed on the sofa, he stared in astonishment at the spectacle before him.

Literally! :grin:

1 Stockfish  88.5/126
2 Lc0        74.5/126
3 Dragon     73.5/126
...


Stockfish is completely undefeated in 63 opening-pairs, only 4! losses all won in the colors-reversed game.

Not so for the others:
Lc0 vs Sf: 8.5-17.5, 15 pairs 1-1, 9 lost 0.5/2, zero won.
Dragon vs Sf: 10.5-15.5, 21 pairs 1-1, 5 lost 0.5/2, zero won.
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