refuted opening lines

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Uri Blass
Posts: 8526
Joined: Wed Mar 08, 2006 11:37 pm
Location: Tel-Aviv Israel

refuted opening lines

Post by Uri Blass » Sat Jul 27, 2019 7:46 am

It may be interesting how many common opening lines are refuted by ananlysis of chess engines

For this discussion refuted means evaluation of more than 1.5 pawns for one side after long analysis by stockfish with contempt 0(more than 3,000,000,000 nodes) so probably losing the game
common means that history of games shows at least 10% probability of playing every move for the loser and that humans played every move in the line of the loser at least 10 times in history.



First line(statistics is based on chesstempo site when first number is number of cases move of black is played from the relevant position and second number is number of time the position before black's move appeared on the board).

I do not think that chesstempo is the best to generate the statistics and if somebody has a pgn of human games when it is easy to find statistics from it then it may be better to continue from it.

1.e4 c5 (755294 games out of 1738140 so common)
2.Nf3 d6 (238130 games out of 581989 so common)
3.d4 cxd4 (179738 games out of 187428 so very common)
4.Nxd4 Nf6 (167472 games out of 170275 so very common)
5.Nc3 a6 (101933 games out of 171411)
6.Bg5 e6 (18863 out of 23420)
7.f4 Be7 (5756 out of 16163)
8.Qf3 Qc7 (3862 out of 5559)
9.0-0-0 Nbd7(3054 out of 3816)
10.g4 b5(2050 out of 2566)
11.Bxf6 Nxf6(1548 out of 1925)
12.g5 Nd7(1513 out of 1513)
13.f5 Bxg5+(542 out of 1197)
14.Kb1 Ne5 (438 out of 541)
15.Qh5 Qd8(221 out of 426)
16.h4 Bf6(57 out of 57)
17.fxe6 0-0(45 out of 55)
18.Bh3 fxe6(20 out of 46)
19.Bxe6+ Kh8(19 out of 19)
20.Nd5 Nc4(13 out of 30)

and now stockfish(contempt 0) suggest that white is winning



Stockfish_19072603_x64_modern:
1/1 00:00 279 140k +3.75 21.Nxf6 gxf6
2/2 00:00 859 430k +4.17 21.Nc6 Bxe6 22.Nxd8 Raxd8
3/3 00:00 1k 520k +4.17 21.Nc6 Bxe6 22.Nxd8
4/6 00:00 2k 819k +6.16 21.Nf4 h6 22.Ng6+ Kh7 23.Nxf8+ Qxf8
5/7 00:00 3k 1,010k +5.08 21.Nf4 h6 22.Bd5 Bxd4 23.Ng6+ Kh7
6/8 00:00 5k 1,310k +2.21 21.Nc6 g6 22.Nxd8 gxh5 23.Nf7+ Rxf7 24.Bxf7
7/8 00:00 10k 1,660k +2.08 21.Nf4 Qe8 22.Bd5 Qxh5 23.Nxh5
8/8 00:00 13k 1,891k +1.76 21.Nf4 Qe8 22.Bd5 Ra7 23.Qxe8 Rxe8 24.Nc6
9/12 00:00 24k 1,969k +0.77 21.Nxf6 Qxf6 22.Bd5 Ra7 23.Qg5 Ne5 24.Rhg1 Qxg5 25.hxg5
10/14 00:00 30k 2,006k +0.87 21.Nxf6 Qxf6 22.Bd5 Ra7 23.Qe2 Bb7 24.Bxc4 bxc4
11/13 00:00 32k 2,005k +1.67 21.Nxf6 Qxf6 22.Bd5 Ra7 23.Qe2 Re8 24.Bxc4
12/14 00:00 36k 2,016k +2.23 21.Nxf6 Qxf6 22.Bd5 Rb8 23.Qe2 Bd7 24.h5 Ne5
13/20 00:00 235k 2,177k +0.48 21.Nxf6 Qxf6 22.Bd5 Rb8 23.Qe2 Qf4 24.Bxc4 Bg4 25.Rdf1 Bxe2 26.Rxf4 Bxc4 27.Rxf8+ Rxf8 28.h5 Rf2 29.h6 gxh6 30.Rxh6
14/24 00:00 247k 2,164k +0.69 21.Nxf6 Qxf6 22.Bd5 Rb8 23.Qe2 Qf4 24.Bxc4 Bg4 25.Rdf1 Bxe2 26.Rxf4 Bxc4 27.Rg4 Rf2 28.h5 Rbf8
15/25 00:00 331k 2,206k +1.16 21.Nxf6 Qxf6 22.Bd5 Rb8 23.Qe2 Bd7 24.h5 Ne5 25.Rdf1 Qg5 26.Rfg1 Qh6 27.Rh2
16/25 00:00 771k 2,604k +0.94 21.Nxf6 Qxf6 22.Bd5 Ne3 23.Bxa8 Bg4 24.Qg5 Qxg5 25.hxg5 Nxd1 26.Bb7 Nf2 27.Rf1 Bh3 28.Re1 Bc8 29.Bc6 Bg4
17/31 00:00 1,555k 2,729k +0.70 21.Nxf6 Qxf6 22.Bd5 Ne3 23.Bxa8 Bg4 24.Qg5 Qxg5 25.hxg5 Nxd1 26.Bb7 Nf2 27.Re1 Bc8 28.Bxc8 Rxc8 29.e5 dxe5 30.Rxe5 Nh3 31.Rd5
18/30 00:00 1,717k 2,730k +0.85 21.Nxf6 Qxf6 22.Bd5 Rb8 23.Qe2 Qf4 24.Rhg1 Bh3 25.Bxc4 bxc4 26.Qxc4 Qxe4 27.Qc3 Bg2 28.Rd2 Rf4 29.Nb3 Rf1+ 30.Rxf1 Bxf1 31.Qg3 Qe5
19/28 00:00 2,252k 2,797k +1.49 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 Rxe6 24.Nd5 Re8 25.Nc7 Bg4 26.Rd4 Rec8 27.Nxa8 Rxc6 28.Rg1 h5 29.Re1 Ne5 30.b3 Bh3
20/34 00:01 3,279k 2,989k +1.47 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.Rcxf6 Rxh4 29.Rc6 a5 30.a4 Rd8 31.Rf5 Re8 32.Rxa5
21/29 00:01 3,602k 3,012k +1.45 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.Rcxf6 Rxh4 29.Rc6 Kg7 30.a4 Kg8 31.a5 Rg4 32.Rh1 Rg6 33.Rxc4 Rf8 34.Rc7
22/41 00:01 4,890k 3,150k +1.60 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 Rxe6 24.Nd5 Re8 25.Nc7 Bg4 26.Rd4 Rec8 27.Nxa8 Rxc6 28.b3 Ne5 29.Kb2 Bf3 30.Rg1 Kg8 31.a4 bxa4 32.Rxa4 Kf7 33.Rb4
23/45 00:02 9,000k 3,167k +1.58 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.a4 Rxh4 29.Rfxf6 a5 30.Rc7 c3 31.b3 Rh3 32.Ka2 h6 33.Rfc6 Kg8 34.Re6 Kh8 35.Rf6
24/34 00:03 11,729k 3,170k +1.59 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.a4 Rxh4 29.Rfxf6 a5 30.Rc7 c3 31.b3 Rh3 32.Ka2 h6 33.Rfc6 Kg8 34.Rxc3 Rxc3 35.Rxc3 Ra6 36.Kb2 Kf7 37.Rc7+ Kg6
25/45 00:04 13,937k 3,161k +1.56 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.a4 Rxh4 29.Rfxf6 a5 30.Rc7 c3 31.b3 Rh3 32.Ka2 h6 33.Rfc6 Kg8 34.Ka3 Kh8 35.Re6 Kg8 36.Ree7 Kh8
26/36- 00:05 17,117k 3,132k +1.47 21.Nc6 Qe8
26/41+ 00:05 18,218k 3,154k +1.56 21.Nc6
26/41 00:05 18,955k 3,161k +1.67 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bf7 29.Kc1 c3 30.bxc3 Bxa2 31.Nb3 Kg7 32.Kb2 Bxb3 33.cxb3 Kf7 34.c4 Ke6 35.b4 Ke5 36.Kc3 Rg8 37.Ra1 Rg3+ 38.Kb2 Kd4 39.c5 Rg2+ 40.Kb3
27/43+ 00:07 23,297k 3,178k +1.76 21.Nc6
27/45+ 00:08 27,575k 3,213k +1.85 21.Nc6
27/45 00:08 28,889k 3,239k +1.86 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.a4 Rxh4 29.Rfxf6 a5 30.Rc7 c3 31.b3 Rh3 32.Ka2 Kg8 33.Ka3 Kh8 34.Rfc6 Kg8 35.Rc5 Kh8 36.Rg5 h6 37.Rg6 Rg8 38.Ra6 Rg7
28/44- 00:09 31,384k 3,257k +1.77 21.Nc6 Qe8
28/44- 00:09 32,190k 3,258k +1.68 21.Nc6 Qe8
28/44 00:10 33,303k 3,265k +1.73 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Bxc6 27.Rxc6 Rxe4 28.a4 Rxh4 29.Rfxf6 Kg7 30.Rxa6 Rxa6 31.Rxa6 h5 32.a5 Rf4 33.Rc6 h4 34.a6 h3 35.a7 Rf1+ 36.Ka2 Rf8 37.Rxc4 Ra8 38.Rc7+ Kg6
29/54- 00:11 38,510k 3,290k +1.64 21.Nc6 Qe8
29/54+ 00:13 45,127k 3,326k +1.73 21.Nc6
29/54 00:15 50,609k 3,321k +1.55 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.Kc1 Re8 30.Kd2 Bg2 31.Nf5 Bxe4 32.Nd6 Rd8 33.Rxe4 Rxd6+ 34.Kc3 Kg7 35.Rf4 Kg6 36.Rxc4 f5 37.Rd4 Rf6 38.Kd3 f4 39.Ke2 Kh5 40.Kf3 Rb6 41.b3 Kxh4 42.Kxf4 h5
30/50+ 00:23 77,443k 3,247k +1.65 21.Nc6
30/50+ 00:24 78,892k 3,235k +1.74 21.Nc6
30/50 00:25 82,021k 3,224k +1.80 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Rxe4 26.Rd8+ Kg7 27.a4 Kh6 28.Rf1 f5 29.Nd4 Ra7 30.Rxc8 Rxd4 31.Rxf5 Rxh4 32.Rc6+ Kg7 33.Rg5+ Kf8 34.a5 Rf4 35.Rh5 Rd4 36.Ka2 Rg4 37.Ka3 Kg7 38.Kb4 Rg6 39.Rb6 Rg2 40.Kc3
31/50- 00:28 90,088k 3,217k +1.70 21.Nc6 Qe8
31/50 00:29 94,625k 3,226k +1.68 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.Kc1 Re8 30.Kd2 Bg2 31.e5 fxe5 32.Nf5 Bh3 33.Ne3 Be6 34.Kc3 Kg7 35.Rd1 Kh6 36.Rd6 Kh5 37.Rxa6 Kxh4 38.Ra5 Bg8 39.Ra7 h5
32/54- 00:32 104,865k 3,238k +1.58 21.Nc6 Qe8
32/54- 00:32 106,768k 3,241k +1.49 21.Nc6 Qe8
32/54- 00:34 112,083k 3,245k +1.35 21.Nc6 Qe8
32/63+ 00:39 130,406k 3,269k +1.46 21.Nc6
32/63+ 00:42 141,031k 3,283k +1.73 21.Nc6
32/63 00:45 148,465k 3,291k +1.41 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Rxe4 26.Rd8+ Kg7 27.a4 c3 28.b3 f5 29.Rh3 Kf6 30.Rhd3 f4 31.Nd4 Bb7 32.Rd6+ Ke5 33.Nf3+ Kf5 34.Rd7 Bc8 35.Rf7+ Kg6 36.Rf8 Bb7 37.h5+ Kg7 38.Rf5 Kg8 39.h6 Re6 40.Rxf4 Rf8 41.Rg4+ Kh8 42.Nd4 Rf1+ 43.Ka2 Rxh6 44.Rxc3
33/52+ 00:46 155,090k 3,300k +1.50 21.Nc6
33/52+ 00:47 156,231k 3,302k +1.60 21.Nc6
33/52+ 00:48 159,338k 3,307k +1.74 21.Nc6
33/52 00:48 160,700k 3,311k +1.74 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.Kc1 Re8 30.Kd2 Bg2 31.Kc3 Bxe4 32.Nf5 Re6 33.Ng3 Bd5 34.Rxe6 Bxe6 35.Ne4 Kg7 36.Nc5 Kf7 37.Nxe6 Kxe6 38.Kxc4 Ke5 39.Kd3 f5 40.Ke3 a5 41.a4 h6 42.c4
34/49- 00:51 171,359k 3,297k +1.64 21.Nc6 Qe8
34/49+ 00:56 186,863k 3,296k +1.74 21.Nc6
34/50+ 01:06 218,353k 3,262k +1.88 21.Nc6
34/50 01:07 220,817k 3,263k +1.67 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Rxe4 27.Na5 Rb8 28.h5 Ba8 29.Rdxf6 Bd5 30.h6 c3 31.Rf8+ Rxf8 32.Rxf8+ Bg8 33.bxc3 Re6 34.c4 Rxh6 35.c5 Kg7 36.Rf1 Rf6 37.Rh1 Be6 38.Kb2 Bd5 39.Rd1 Be6 40.c6 h5 41.Nb3
35/52- 01:10 231,663k 3,268k +1.58 21.Nc6 Qe8
35/53 01:12 235,593k 3,271k +1.60 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.e5 fxe5 30.Rxe5 Rf8 31.a4 Rf4 32.Re8+ Kg7 33.Ne6+ Bxe6 34.Rxe6 h5 35.Rxa6 Rxh4 36.Rc6 Rf4 37.a5 Rf1+ 38.Ka2 Rf5 39.a6 Ra5+ 40.Kb1 Kf7 41.Kc1 Ra2 42.Rh6 Kg7 43.Rxh5 c3 44.bxc3 Rxa6
36/57+ 01:36 313,881k 3,255k +1.69 21.Nc6
36/57+ 01:39 323,984k 3,259k +1.79 21.Nc6
36/57 01:39 325,233k 3,260k +1.76 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Kc1 c3 29.b3 Re8 30.a4 Rc8 31.Nb4 a5 32.Na2 Kg7 33.Re3 Kg6 34.Nxc3 Kh5 35.Kb2 Kxh4 36.e5 f5 37.Ne2 Re8 38.c4 h5 39.Kc3 f4 40.Nxf4 Kg5 41.Nxe6+ Rxe6 42.Re1 h4 43.c5
37/61- 01:51 364,458k 3,276k +1.67 21.Nc6 Qe8
37/69 02:11 433,205k 3,282k +1.70 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.e5 fxe5 30.Rxe5 Rf8 31.a4 Rf4 32.Re8+ Kg7 33.Ne6+ Bxe6 34.Rxe6 Rxh4 35.Rxa6 h5 36.Rc6 Rg4 37.a5 Rg1+ 38.Ka2 Rg5 39.a6 Ra5+ 40.Kb1 Kf8 41.Kc1 c3 42.bxc3 Kg7 43.Kd2 h4 44.Rc4 h3 45.Rh4 Rxa6 46.Rxh3 Rc6 47.Rf3 Rf6 48.Rxf6 Kxf6 49.c4 Ke5 50.Ke3 Kd6 51.Kd4 Kc6 52.c5 Kb5
38/61+ 02:34 511,434k 3,300k +1.80 21.Nc6
38/61+ 02:44 542,501k 3,290k +1.89 21.Nc6
38/72 02:56 579,132k 3,290k +1.80 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.e5 fxe5 30.Rxe5 Rf8 31.a4 Rf4 32.Re8+ Kg7 33.Ne6+ Bxe6 34.Rxe6 Rxh4 35.Rxa6 h5 36.Rc6 Rg4 37.a5 Rg1+ 38.Ka2 Rg5 39.a6 Ra5+ 40.Kb1 Kf7 41.Rc7+ Kf6 42.a7 c3 43.b3 h4 44.b4 Ra4 45.b5 h3
39/59- 03:04 607,607k 3,289k +1.70 21.Nc6 Qe8
39/69- 03:11 632,461k 3,296k +1.61 21.Nc6 Qe8
39/69+ 03:12 635,571k 3,297k +1.70 21.Nc6
39/69 03:25 676,823k 3,292k +1.59 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.e5 fxe5 30.Rxe5 Rf8 31.a4 Rf4 32.Re8+ Kg7 33.Ne6+ Bxe6 34.Rxe6 Rxh4 35.Rxa6 h5 36.Rc6 Rg4 37.a5 Rg1+ 38.Ka2 Rg5 39.a6 Ra5+ 40.Kb1 Kf7 41.Kc1 Ra2 42.Rh6 Kg7 43.Rxh5 c3 44.bxc3 Rxa6 45.c4 Kg6 46.Rd5 Kf7 47.Kd2 Ke6 48.Rh5 Rd6+ 49.Kc3 Kd7 50.Rc5 Ke6 51.Ra5
40/68- 03:35 711,091k 3,295k +1.50 21.Nc6 Qe8
40/68+ 03:44 737,855k 3,292k +1.59 21.Nc6
40/68+ 03:50 760,911k 3,297k +1.73 21.Nc6
40/68 03:55 779,173k 3,303k +1.79 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.e5 fxe5 30.Rxe5 Rf8 31.a4 Rf4 32.Re8+ Kg7 33.Ne6+ Bxe6 34.Rxe6 Rxh4 35.Rxa6 Rf4 36.Rc6 h5 37.a5 Rf1+ 38.Ka2 Rf5 39.a6 Ra5+ 40.Kb1 Kf7 41.Kc1 Ra2 42.Rh6 c3 43.bxc3 Kg7 44.Rxh5 Rxa6 45.c4 Kg6 46.Rd5 Rc6 47.c5 Kf7 48.Kd2 Ke6 49.c4 Rc7 50.Kd3 Rd7 51.Kd4
41/56- 04:12 836,471k 3,308k +1.70 21.Nc6 Qe8
41/65- 04:26 881,643k 3,312k +1.61 21.Nc6 Qe8
41/65- 05:06 1,021,763k 3,329k +1.46 21.Nc6 Qe8
41/65+ 05:23 1,075,492k 3,329k +1.58 21.Nc6
41/71 05:58 1,194,089k 3,334k +1.69 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Kc1 Re8 29.Kd2 c3+ 30.bxc3 Bxa2 31.Kd3 Bf7 32.Kd4 Kg7 33.Nb4 Rd8+ 34.Nd5 f5 35.c4 fxe4 36.Rxe4 a5 37.Re7 Rd6 38.Kc5 Rh6 39.Ne3 Kf8 40.Re4 Rh5+ 41.Kb6 Bg6 42.Rf4+ Ke7 43.c5 Re5 44.Nc4 Re2 45.c3 Rc2 46.c6 Rxc3 47.Nxa5
42/66- 06:16 1,254,347k 3,327k +1.60 21.Nc6 Qe8
42/66+ 06:55 1,383,211k 3,328k +1.69 21.Nc6
42/66+ 07:17 1,454,992k 3,325k +1.84 21.Nc6
42/66- 07:30 1,498,806k 3,328k +1.51 21.Nc6 Qe8
42/71+ 08:04 1,609,722k 3,324k +1.77 21.Nc6
42/85 09:13 1,840,003k 3,327k +1.78 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bb7 26.Rf1 Rxe4 27.Na5 Rb8 28.Nxb7 Rxb7 29.Rdxf6 Rxh4 30.Rxa6 Rg4 31.Rh1 Kg7 32.Rah6 Kg8 33.R6h5 Rg6 34.Rc5 Rgb6 35.b3 cxb3 36.cxb3 Re6 37.Rc8+ Kg7 38.Kb2 Re2+ 39.Rc2 Rxc2+ 40.Kxc2 Kg6 41.a4 h5 42.Kc3 Kg5 43.b4 h4 44.b5 Kg4 45.Kc4 Ra7 46.b6 Rxa4+ 47.Kb5
43/68- 10:32 2,112,663k 3,339k +1.69 21.Nc6 Qe8
43/68+ 10:35 2,124,060k 3,340k +1.78 21.Nc6
43/68+ 11:04 2,217,400k 3,338k +1.92 21.Nc6
43/68- 11:36 2,325,660k 3,337k +1.59 21.Nc6 Qe8
43/68+ 11:49 2,364,760k 3,333k +1.85 21.Nc6
43/68 12:21 2,470,387k 3,331k +1.88 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.b3 Re8 29.Nb4 a5 30.Nc6 a4 31.b4 c3 32.Re3 Bd5 33.Nd4 a3 34.b5 Bc4 35.Kc1 Rd8 36.Nf5 Bxb5 37.Rxc3 Ra8 38.Rc7 Rd8 39.Nh6 Rd7 40.Rc3 Kg7 41.Nf5+ Kg6 42.Rg3+ Kh5 43.Rxa3 Kg4 44.Ne3+ Kxh4 45.Nd5 Rb7 46.Rb3 Kg5 47.a4 Bc6 48.a5 Rxb3 49.cxb3
44/66- 13:12 2,618,348k 3,302k +1.79 21.Nc6 Qe8
44/66+ 13:27 2,666,173k 3,300k +1.88 21.Nc6
44/69+ 17:08 3,367,649k 3,276k +2.02 21.Nc6
44/69 17:28 3,434,721k 3,277k +1.93 21.Nc6 Qe8 22.Qxe8 Rxe8 23.Nxf6 gxf6 24.Bxc4 bxc4 25.Rxd6 Bg4 26.Re1 Re6 27.Rxe6 Bxe6 28.Nd4 Bh3 29.b4 cxb3 30.axb3 Re8 31.c4 Bg2 32.Kb2 Rxe4 33.Rxe4 Bxe4 34.b4 Kg8 35.Ne6 Bf5 36.Nf4 Kf7 37.Kc3 Bg4 38.Kd4 Ke8 39.Kc5 Ke7 40.Nd5+ Ke6 41.Kd4 Kf7 42.Nc7 Bc8 43.Kd5 Ke7 44.Kc6 Bd7+ 45.Kb6 f5 46.c5 Bb5 47.Nxa6 Bxa6 48.Kxa6 f4 49.c6 Kd6

probably 20...Nc4 is a mistake and stockfish suggest 20...g6 with good chances for white but a score that is only near +1 pawns.

Dann Corbit
Posts: 9894
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: refuted opening lines

Post by Dann Corbit » Tue Jul 30, 2019 11:48 pm

Here are some opening positions with a computer evaluation of -150 centipawns or worse which were played at least 50 times in my database. They are sorted so that the most frequently occurring are on top. There are a few that are questionable (where the cce value is a lot better for the side to move than the ce value). The cce value is based on actual game outcomes, so the two values really ought to agree at least roughly.

Code: Select all

rnbqkbnr/pppppp1p/8/6p1/3PP3/8/PPP2PPP/RNBQKBNR b KQkq - acd 41; acs 4020; bm h6; c3 "h6"; cce -101; ce -171; pm h6 {415} Bg7 {169} g4 {80} e6 {55} Bh6 {6} a6 {6} c5 {6} d5 {6} Na6 {4} Nh6 {4} b5 {4} b6 {4} a5 {3} Nc6 {2} Nf6 {2} e5 {2} h5 {2} d6 {1} f5 {1}; pv h6 Nc3 d6 h4 gxh4 Be3 Nf6 Rxh4 Nc6 f3 e5 Nge2 Bg7 dxe5 dxe5 Qxd8+ Nxd8 Ng3 Bd7 O-O-O Ne6 Nf5 Bf8 Bc4 a6 g4 Rh7 Nxh6 O-O-O g5 Ne8 Bb3 Be7 Nf5 Rxh4 Nxe7+ Kb8 Nf5 Rh3 g6 Nd6 Nxd6 cxd6 gxf7 Rxf3 Rxd6 Rxe3; white_wins 429; black_wins 254; draws 84; Opening ECO:B00b; Reversed Grob (Borg/Basman Defence); 1.e4 g5 2.d4 *; 
r1b1k2N/ppppq1pp/2n2n2/2b1p3/2B1P3/8/PPPP1PPP/RNBQK2R b KQq - acd 44; acs 3448; bm d5; cce -248; ce -307; pm Qf8 {173} Bxf2+ {89}; pv d5 exd5 Bg4 Be2 Bxf2+ Kf1 Bxe2+ Qxe2 Nd4 Qxf2 O-O-O d6 Rxd6 d3 Ne4 dxe4 Rf6 Nc3 Nxc2 Rb1 Qf8 Qxf6 Qxf6+ Ke2 Nd4+ Kd3 Qa6+ Ke3 Qh6+ Kf2 Qh4+ Kf1 b5 b4 Qd8 Bd2 Qxh8 h4 a5 bxa5 Qf8+ Ke1 Qf7 Rb2 Qc4 a3 Qc5 a6 Qa7 Rf1 Qxa6 Rf8+ Kd7 Rf7+ Kc8 Rxg7 Qxa3 Rb1 Qc5 Rxh7 Qc4 Rh8+ Kd7; white_wins 189; black_wins 43; draws 29; 
rnbqk2r/pp1p1ppp/8/3p4/4P1P1/1P1Q1N2/P1P1KbP1/R1B2B1R b kq - acd 44; acs 2307; bm Bc5; cce -388; ce -247; pm Bc5 {148} Qf6 {61} Bg3 {19} Bb6 {7} Qb6 {3}; pv Bc5 exd5 d6 Bb2 Bxg4 Re1 Kd7 Kd1 a5 Bxg7 h5 Be2 Kc7 Bc3 Re8 Nd4 Qg5 Rhf1 Nd7 Rxf7 Rxe2 Nxe2 Re8 Rg7 Qh6 Bxa5+ Kb8 Rxg4 hxg4 Ng3 Rf8 Ne4 Ba3 Bd2 Qh5 g3 Nc5 Qd4 Nxe4 Qxe4 Qh2 Qxg4 Qg2 c4 Bc5 Qg7 Qf3+ Kc1 Qf2 Kb1; white_wins 221; black_wins 13; draws 4; 
r2qkb1r/1b3ppp/p1n1pn2/1p6/3P4/1BN2N2/PP2QPPP/R1BR2K1 b kq - acd 36; acs 95; bm Na5; cce -69; ce -152; pm Na5 {233} Ne7 {2}; pv Na5 d5 Nxb3 dxe6 Qb6 exf7+ Kxf7 axb3 Kg8 Be3 Qe6 b4 h6 Rd4 Re8 Qd3 Rh7 Qg6 Qf7 Nh4 Qxg6 Nxg6 Kf7 Nxf8 Rxf8 Rad1 Re8 Ne2 Rhh8 Nf4 Re7 Nd3 Rhe8 Nc5 Ne4 Nxb7 Rxb7 h3 Re6 Rd7+ Rxd7 Rxd7+ Re7 Rxe7+ Kxe7 f3 Ng5 Bxg5+ hxg5 Kf2 Ke6 Ke2 Kd6 Ke3; white_wins 88; black_wins 52; draws 90; 
r4rk1/ppq1ppbp/3pbnp1/8/3BP2P/2N2P2/PPPQ2P1/1K1R1B1R b - - acd 43; acs 3660; bm Rfc8; c3 "Rfc8"; cce -111; ce -157; pm Rfc8 {161} Nh5 {28} h5 {27} Rfe8 {11} a6 {3} b6 {1} d5 {1}; pv Rfc8 h5; white_wins 111; black_wins 54; draws 62; 
rnbqkbnr/pppppp1p/8/6B1/3P4/8/PPP1PPPP/RN1QKBNR b KQkq - acd 39; acs 1150; bm c5; c3 "Bg7"; cce 7; ce -189; pm Bg7 {114} d5 {43} Nf6 {11} c6 {10} h6 {5} Nh6 {4} a6 {3} d6 {3} Nc6 {2} b6 {2} Na6 {1} f5 {1} h5 {1}; pv c5 e3 Bg7 c3 Qb6 Nd2 d5 Ne2 Nd7 Rb1 Bf6 Bxf6 Ngxf6 Ng3 h5 h4 cxd4 cxd4 e5 Nb3 Qb4+ Qd2 a5 Qc3 b6 a3 Qxc3+ bxc3 O-O Nd2 Ba6 Bxa6 Rxa6 Nf5 Re8 O-O Kf8 Kh2 Rc8 Rfc1 Ra7 Kg3 e4 Kh2 Rc6 a4 Ng4+ Kg3; white_wins 91; black_wins 94; draws 15; 
rnbqk2r/pp1p1ppp/8/2bP4/6P1/1P1Q1N2/P1P1K1P1/R1B2B1R b kq - acd 44; acs 3252; bm d6; cce -407; ce -243; pm Qf6 {56} Na6 {52} Qe7+ {42} h6 {20} d6 {18} b6 {5}; pv d6 Bb2 Bxg4 Re1 Kd7 Kd1 a5 Bxg7 h5 Be2 Kc7 Nd2 Bxe2+ Rxe2 Rg8 Bc3 Nd7 Rxh5 Bb4 Qc4+ Kb8 Bd4 Ne5 Qb5 Bxd2 Bxe5 a4 Bxd6+ Qxd6 Re8+ Kc7 Rxa8 Rxa8 Qc4+ Kd7 Kxd2 axb3 Qg4+ Kc7 axb3 Rd8 Rf5 f6 Qd4 Qg3 Kc1 Kb8 Qxf6 Rc8 Qe5+ Qxe5 Rxe5 Kc7 Re7+ Kd6 Rxb7 Kxd5; white_wins 184; black_wins 7; draws 2; 
r2qkb1r/1b1n1ppp/p3Pn2/2p5/1p2P3/2NB1N2/PP3PPP/R1BQ1RK1 b kq - acd 36; acs 359; bm fxe6; cce -297; ce -237; pm fxe6 {169}; pv fxe6 Na4 Bc6 Bc4 Bb5 Qb3 Qc7 Re1 Be7 Bxe6 c4 Qe3 Qd6 Bf5 Bxa4 e5 Qc5 exf6 Qxe3 Bxe3 Bxf6 Bd4+ Kf7 Be6+ Kg6 Rac1 Bb5 Bxf6 gxf6 Nh4+ Kh5 Nf5 Nc5 Bxc4 Nd3 Bxd3 Bxd3 Ne7 Rad8 Re6 Rhe8 Rxf6 Kg5 Re6 Bc4 Re4 Bxa2; white_wins 132; black_wins 19; draws 18; 
r3kbnr/ppp1pppp/2n5/q4b2/3P4/2N1P3/PP1B1PPP/R2QKBNR b KQkq - acd 44; acs 2669; bm Nf6; cce -116; ce -305; pm e6 {146} Bd7 {1}; pv Nf6 e4 Nxe4 Nxe4 Qb6 Ng3 Be6 Bc3 O-O-O Nf3 g6 a4 Bb3 Qe2 a5 Qb5 Bg7 Rc1 Bd5 Qxb6 cxb6 Bb5 Kb8 O-O Bxf3 gxf3 Nxd4 Kg2 h5 Ne2 Ne6 Bxg7 Nxg7 Rfd1 Ne6 f4 Nc5 Nd4 e6 h4 f6 Kg3 Rhg8 Kf3 e5 fxe5 fxe5 Ne2 Rxd1 Rxd1 Rf8+ Kg2; white_wins 76; black_wins 39; draws 27; 
r3kbnr/ppp1pppp/2n5/3q1b2/3P4/2N1P3/PP3PPP/R1BQKBNR b KQkq - acd 44; acs 5280; bm Qd6; cce -116; ce -255; pm Qa5 {147} Qd7 {1}; pv Qd6 e4 Bc8 d5 Nb8 Qc2 a6 f4 Qc5 a3 g6 b4 Qa7 Qd3 Bg7 Nf3 Nf6 e5 Ng4 Qe2 Bf5 h3 Bd3 Qd2 Bxf1 Rxf1 Nh6 Qd3 c5 g4 Nd7 Be3 O-O Kf2 b6 Kg2 Qb7 Ng5 f5 Rh1 Rfc8 Rac1 cxb4 axb4 a5 b5 a4 Ne6 fxg4 hxg4 Nxg4 Bd4; white_wins 76; black_wins 39; draws 27; 
rnbqk2r/4ppbp/3p1n2/1NpP4/1pB2B2/8/PP3PPP/R2QK1NR w KQkq - acd 44; acs 6480; bm a4; cce -280; ce -164; pm Nf3 {85} Qb3 {17} a3 {11} Qe2 {10} Ne2 {6} Nh3 {2} a4 {2} h4 {2} Qc2 {1} Qd3 {1}; pv a4 Nbd7 Ne2 Nb6 b3 Bb7 O-O Nfxd5 Bd3 Nxf4 Nxf4 Be5 Nh5 Rg8 Ng3 Bxa1 Qxa1 Kf8 Qc1 Rg7 Qh6 Kg8 f3 Qf8 Qh4 Nd5 Rd1 e6 Nh5 Qd8 Qxd8+ Rxd8 Nxg7 Kxg7 Kf2 h6 g3 Kf6 Be4 Ke7 f4 Ra8 f5 Kd7 Rd2 Bc6 Kf3 Rb8 Na7 Ba8 fxe6+ fxe6 Nb5 Rf8+ Kg2; white_wins 11; black_wins 98; draws 29; 
r2qkb1r/1b1n2pp/p3pn2/2p5/Np2P3/3B1N2/PP3PPP/R1BQ1RK1 b kq - acd 44; acs 5940; bm Bc6; cce -271; ce -226; pm Bc6 {38} Nxe4 {28} Bxe4 {23} Be7 {13} Bd6 {11} Qa5 {8} Qc8 {1}; pv Bc6 a3 Bd6 Bc4 Qe7 axb4 Bb5 bxc5 Bxh2+ Nxh2 Bxc4 Re1 Bb5 Nc3 Rd8 Nxb5 axb5 Qb3 O-O c6 Ne5 Bg5 h6 Qxb5 Nd3 Red1 hxg5 Rxd3 Rxd3 Qxd3 Qc5 Nf3 Ng4 Qd4 Qxc6 e5 Nh6 Nxg5 Nf7 Nxf7 Rxf7 b4 Rf8 Qd6 Qc4 f3 Qc3 Qxe6+ Kh8 Rd1 Qxb4 Qd5 Qe7 Qd4 Rb8; white_wins 92; black_wins 17; draws 14; 
r2qkb1r/1b3pp1/p3pn1p/3pn1P1/Np1NP2P/4BP1B/PPPQ4/2KR3R b kq - acd 36; acs 923; bm Qa5; cce -293; ce -336; pm Nfd7 {78} Nh5 {23} hxg5 {10} Nc4 {8} Qa5 {1}; pv Qa5 b3 hxg5 hxg5 Nfd7 Kb1 O-O-O f4 Nc4 bxc4 Qxa4 exd5 Rxh3 Rxh3 exd5 Nf3 Bc5 cxd5 Qa3 Ng1 Qa4 Ne2 Bxe3 Qxe3 Qb5 d6 Nb6 Qe5 Qxe5 fxe5 Nc4 Rh4 Nxe5 Rxb4 Bc6 Nc3 Kd7 Na4 Bf3 Rd2 a5 Nb6+ Kc6 Nc4 axb4 Nxe5+ Kc5 Nxf3 Rxd6 Rxd6; white_wins 94; black_wins 16; draws 8; 
r3kb1r/1b1n1pp1/p3pn1p/q2pP3/Np1N2PP/1P2BP2/P1PQ4/2KR1B1R b kq - acd 44; acs 2548; bm Nxe5; cce -263; ce -244; pm Ng8 {62} Nxe5 {35} Nh7 {21}; pv Nxe5 Nxe6 d4 Nxd4 Be7 Bg2 Rd8 Qf2 g6 Rhe1 O-O Bxh6 Rfe8 Kb1 Ne4 fxe4 Nxg4 Qf4 Nxh6 Qxh6 Bf6 e5 Rxe5 Bxb7 Rxd4 Rh1 Qd8 Qc1 a5 Bf3 Bxh4 c4 bxc3 Nxc3 Bg5 Qc2 Rd2 Be2 Rxc2 Rxd8+ Bxd8 Kxc2 Be7 Rd1 Kf8 Rd7 Bb4 Bc4 Rf5 Nd5 Ba3 Ra7 Rf2+ Kd3 Rxa2 Ra8+ Kg7 Rxa5; white_wins 84; black_wins 14; draws 20; 
r1bqk2r/p3nppp/2p1p3/2bpP3/6Q1/8/PPP2PPP/RNB1K1NR w KQkq - acd 44; acs 1295; bm Nc3; cce -297; ce -222; pm b4 {103} Qxg7 {9} Ne2 {3} Nc3 {2} Nd2 {1}; pv Nc3 Qb6 Nh3 Qb8 O-O Qxe5 Bf4 Qf5 Qg3 Bd4 Bd6 Qg6 Rfe1 Qxg3 Bxg3 f6 Bd6 e5 Nf4 Nf5 Ba3 Bb6 Nfe2 Kf7 Na4 Ba6 Ng3 Nxg3 hxg3 h5 Nxb6 axb6 Bd6 Ke6 Bb4 Bb5 Bd2 c5 f3 d4 Kf2 Bc6 Rh1 e4 fxe4 Bxe4 c3 d3 a3 c4 Bf4 Bd5 Rae1+ Kf5; white_wins 12; black_wins 91; draws 15; 
r3kb1r/pb1n1ppp/4pq2/2p1N3/1p1P4/3BP3/PP3PPP/R1BQ1RK1 b kq - acd 47; acs 7200; bm O-O-O; cce -139; ce -196; pm O-O-O {73} cxd4 {58} Rd8 {1}; pv O-O-O f4; white_wins 61; black_wins 24; draws 33; 
rn2kb1r/1bq2ppp/p2ppn2/1p6/P2NP3/2N3P1/1PP2PBP/R1BQR1K1 b kq - acd 44; acs 1211; bm Be7; cce -218; ce -155; pm b4 {75} bxa4 {57} Be7 {1}; pv Be7 axb5 O-O Qe2 axb5 Ncxb5 Qc8 Rxa8 Bxa8 c4 Nc6 Nxc6 Qxc6 b4 Rb8 Bf4 Bf8 Qd3 Nd7 Rc1 Ne5 Qd4 Nd7 Qc3 Bb7 Nd4 Qc7 Nb3 Be7 Be3 Nf6 Qd3 Ng4 Bd2 Ne5 Qe2 Nd7 Ra1 Rc8 b5 Qb8 Na5 Ba8 Be3 Bd8 Nb3 Bb7 Qd3; white_wins 74; black_wins 18; draws 22; 
rnbqk1nr/ppppppbp/8/6B1/3PP3/8/PPP2PPP/RN1QKBNR b KQkq - acd 36; acs 701; bm d5; cce -16; ce -160; pm c5 {102} d6 {9} d5 {2}; pv d5 exd5 Qxd5 Be3 Nf6 Nf3 O-O Nc3 Qa5 Bd3 c5 dxc5 Nbd7 O-O Nxc5 Bc4 Bg4 h3 Rfd8 Qe2 Bh5 Rfd1 a6 Bd4 e6 a3 Ncd7 g4 Bg6 Re1 b5 Bd3 Bxd3 cxd3 Qc7 Rac1 Qb7 g5 Nh5 Bxg7 Nxg7 h4 h6 Ne4 Nf5 h5 Rac8 Rxc8 Rxc8; white_wins 51; black_wins 47; draws 15; 
rnbq1rk1/pp1pbppp/4p2B/4P3/3N2Q1/2P5/P1P2PPP/R3KB1R b KQ - acd 37; acs 150; bm g6; c3 "g6"; cce -170; ce -165; pm g6 {124}; pv g6 h4 Qa5 Qg3 d6 Nb5 Nc6 Rd1 Nxe5 Bxf8 Kxf8 Nxd6 f5 Nc4 Nxc4 Bxc4 Qc5 h5 g5 Qd3 g4 a4 Qe5+ Kf1 Kf7 Re1 Qc5 Bb3 b6 Qd2 g3 Re2 Ba6 Bxe6+ Ke8 Qd7+ Kf8 Qd4 Qxd4 cxd4 f4 fxg3 Rd8 c3 fxg3 h6 Bxe2+ Kxe2; white_wins 60; black_wins 17; draws 35; 
r1b1kq2/pppp1Npp/2n2n2/2b1p3/2B1P3/8/PPPP1PPP/RNBQK2R b KQq - acd 44; acs 1686; bm d5; cce -292; ce -372; pm d5 {108}; pv d5 exd5 Qxf7 dxc6 Qxc4 d3 Qd5 Qf3 Qxf3 gxf3 bxc6 Be3 Bd6 Nd2 Bf5 O-O-O Kf7 Rdg1 Rf8 Ne4 Nh5 h4 Ke6 b3 Kd7 Rg5 g6 Rgg1 Ba3+ Kb1 Bxe4 fxe4 Ke6 Rg5 a6 Rgg1 Rf3 c3 a5 Kc2 Be7 Kd2 c5 Ke2 Rf8 Bg5 Bd6 a3 Kd7 f3; white_wins 84; black_wins 13; draws 11; 
r3kb1r/1b3pp1/p3pn1p/q1np2P1/Np1NP2P/1P2BP1B/P1PQ4/2KR3R b kq - acd 44; acs 3000; bm hxg5; cce -312; ce -554; pm Nfd7 {35} Nxa4 {29} Nh5 {26} hxg5 {7} Ng8 {4}; pv hxg5 hxg5 Rxh3 Rxh3 Nfd7 g6 f6 exd5 Bxd5 Nxe6 Nxe6 Qxd5 Qxd5 Rxd5 Ne5 Rg3 Nc6 f4 Ne7 Rd6 Nc7 Rd4 Rd8 Rxb4 Nf5 Re4+ Kd7 Rh3 Ba3+ Kd1 Nd6 Rd4 Ne6 Rd5 Kc6 c4 Re8 Kc2 Nc7 Rdh5 Re6 Kd3 f5 c5 Nd5 cxd6 Rxe3+ Rxe3 Nxf4+ Kc4 Nxh5 b4 Bc1 Re5 Kxd6 Rxf5 Nf4 Ra5 Be3 Rxa6+ Ke5 Nc5 Kf5 b5 Nxg6 b6 Ne5+ Kd5 Bxc5 Kxc5; white_wins 78; black_wins 7; draws 16; 
rn1qkbnr/p1pp2pp/1p2p3/5P1Q/2PP4/3B4/PP3PbP/RNB1K1NR b KQkq - acd 38; acs 600; bm g6; cce -18; ce -216; pm g6 {108} Ke7 {1}; pv g6; white_wins 45; black_wins 41; draws 13; 
r1bqk2r/p3nppp/1bp1p3/3pP3/1P4Q1/8/P1P2PPP/RNB1K1NR w KQkq - acd 36; acs 376; bm Nf3; cce -274; ce -185; pm Nf3 {91} Qxg7 {5} Nc3 {2} a4 {1}; pv Nf3 a5 O-O O-O bxa5 Bxa5 Bd2 Ng6 Bxa5 Qxa5 Nbd2 f6 Nb3 Qa7 Qg3 fxe5 Nxe5 Nxe5 Qxe5 Ba6 Qxe6+ Kh8 Qxc6 Bxf1 Rxf1 Qxa2 Nd4 Qc4 Qxc4 dxc4 g3 Rfd8 Nf5 Rd2 Ne3 c3 g4 h6 Kg2 Kg8 h4 Rf8 g5 Kh7 gxh6 Kxh6; white_wins 12; black_wins 73; draws 14; 
2r1kb1r/1b3pp1/p2ppn1p/q1n3P1/Np1NP2P/1P2BP1B/P1PQ4/2KR3R b k - acd 36; acs 272; bm hxg5; c3 "hxg5"; cce -293; ce -249; pm hxg5 {42} Nxa4 {32} Nfxe4 {11} Ncxe4 {7} Nfd7 {3}; pv hxg5 hxg5 Nfd7 g6 f5 exf5 Nxa4 fxe6 Rxh3 exd7+ Kxd7 Rxh3 Nc3 Qg2 Qxa2 Qg4+ Kc7 Rdh1 Kb8 Kd2 Qb2 Rh8 Nb5 Ke1 Nxd4 Qxd4 Qb1+ Kf2 Qxc2+ Bd2 Qf5 Qf4 Qxf4 Bxf4 Be7 R1h7 Bd5 Rxc8+ Kxc8 Rxg7 Bf6 Rf7 Bc3 Bxd6 Bxb3 Ke3 a5 Rc7+ Kd8 Rb7 Bc4 g7 a4 Bxb4; white_wins 73; black_wins 11; draws 10; 
rnbqkbnr/5ppp/3pp3/8/2pPP3/5N2/PPP2PPP/R1BQK2R w KQkq - acd 37; acs 4195; bm O-O; cce -409; ce -747; pm Bg5 {62} O-O {27}; pv O-O Nf6 Bg5 Be7 Nd2 Bb7 c3 Nbd7 Re1 O-O Nxc4 Bxe4 Nxd6 Bxd6 Rxe4 Qb8 Rh4 Qxb2 Qc1 Qxc1+ Rxc1 Ra5 Bxf6; white_wins 3; black_wins 85; draws 1; 
rnbqkbnr/5ppp/3pp3/1p6/2pPP3/1B3N2/PPP2PPP/R1BQK2R w KQkq - acd 38; acs 3077; bm Bxc4; cce -409; ce -630; pm Bxc4 {89}; pv Bxc4 bxc4 O-O Nf6 Re1 Be7 Nd2 O-O c3 Qc7 Qe2 Ba6 Nf1 Nbd7 Ng3 Rfb8 f3 h6 Be3 Bb7 Reb1 Bc6 Qc2 Nf8 b3 Bb5 Qd2 Ng6 Qc2 Nd7 bxc4 Bxc4 Rxb8+ Rxb8 Nf1 d5 e5 Bxf1 Rxf1 Qc4; white_wins 3; black_wins 85; draws 1; 
r1bqk2r/3nppbp/3p1n2/1NpP4/1pB2B2/5N2/PP3PPP/R2QK2R w KQkq - acd 36; acs 801; bm b3; cce -259; ce -227; pm O-O {60} Qb3 {14} Qe2 {8} Nxd6+ {4} Qd3 {2} Bxd6 {1}; pv b3 Nb6 O-O Nxc4 bxc4 Nh5 Bg5 Bxa1 Qxa1 O-O Qc1 f6 Bh6 Ng7 a3 bxa3 Nxa3 Qa5 Nb1 Rf7 Nh4 Qa1 Qe3 Qd4 Qxd4 cxd4 Nd2 e5 dxe6 Bxe6 h3 Rfa7 Nhf3 Nf5 Bf4 h5 Rb1 Ra1 g4 Rxb1+ Nxb1 Ng7 Bxd6 d3 Nbd2 hxg4 hxg4 Bxg4 Be7 Bxf3 Nxf3; white_wins 8; black_wins 60; draws 21; 
rnbqkbnr/5ppp/p2pp3/1p6/2pPP3/1BN2N2/PPP2PPP/R1BQK2R w KQkq - acd 38; acs 1800; bm Bxc4; cce -409; ce -192; pm Nxb5 {89}; pv Bxc4 bxc4; white_wins 3; black_wins 85; draws 1; 
rnb1kbnr/ppp3pp/3p2q1/8/2NP4/2N2Q2/PPP3PP/R1B1KB1R b KQkq - acd 36; acs 377; bm Nf6; cce -203; ce -200; pm Nc6 {64} Nf6 {18} Qg4 {3} Be7 {1} Qf5 {1}; pv Nf6 Ne3 Be7 Bd3 Qh5 Qxh5+ Nxh5 O-O c6 g4 Nf6 g5 Nh5 Bd2 g6 Rae1 Rf8 Ned5 cxd5 Nxd5 Rxf1+ Bxf1 Nc6 Nc7+ Kd8 Nxa8 Nxd4 Ba5+ b6 Nxb6 Nf3+ Kf2 Nxe1 Bb5 Kc7 Nd5+ Kb8 Nxe7 Nxc2 Bd3 Nd4 Bb4 Bb7 Bxd6+ Ka8 Bc4 Nf3 Nd5 Nd2 Nc7+ Kb8 Nb5+ Kc8 Be6+ Kd8 Ke3 Nf3 Bf4 Nxf4 Kxf4 a6 Nd6 Bc6; white_wins 58; black_wins 20; draws 5; 
r2qr1k1/ppp2ppp/2n5/3p1b2/2PPn2N/2P3P1/P1Q1P1BP/R1B2RK1 b - - acd 36; acs 169; bm Bg6; c3 "Bg6"; cce -230; ce -161; pm Bg6 {65} Bg4 {14} Bc8 {2} Be6 {2}; pv Bg6 cxd5 Qxd5 Qd3 Qd6 Nxg6 Qxg6 Rf4 Nd6 e4 f6 Ba3 Kh8 Raf1 Nd8 Qe2 Ne6 Rg4 Qh5 e5 fxe5 dxe5 Ng5 Re4 Qxe2 Rxe2 Nc4 Bc1 Ne6 Bxb7 Rab8 Bd5 Nb6 Bb3 c5 Ref2 h6 Bc2 Rbd8 Kg2 Nc4 Re2 Kg8 h4 Na5 g4 Rf8 Rxf8+ Rxf8 Kg3 Kf7 Re4 Ke7; white_wins 52; black_wins 11; draws 16; 
r1b1kq2/ppp2Npp/2n2n2/2bPp3/2B5/8/PPPP1PPP/RNBQK2R b KQq - acd 36; acs 211; bm Qxf7; cce -284; ce -361; pm Qxf7 {75}; pv Qxf7 dxc6 Qxc4 d3 Qd5 Qf3 Qxf3 gxf3 bxc6 Nc3 Kf7 Be3 Bb4 Bd2 Bf5 Ne4 Bd6 h4 Nh5 Ke2 a6 b3 Rf8 Rag1 h6 Be3 Ke6 Ng3 Bg6 a4 Be7 Ne4 Bh7 Nd2 Bf5 Nc4 Bf6 Na5 Kd7; white_wins 57; black_wins 9; draws 9; 
rnbqkb1r/p4N2/2p1p2p/1p1nP3/2pP3B/2N5/PP3PPP/R2QKB1R b KQkq - acd 36; acs 112; bm Qxh4; cce -180; ce -223; pm Qxh4 {115}; pv Qxh4 Nxh8 Bb4 Rc1 c5 dxc5 Bxc3+ bxc3 Qe4+ Be2 Nf4 Rg1 Nc6 Kf1 Qxe5 Bf3 Bb7 Nf7 Kxf7 Qd7+ Ne7 Qxb7 Rc8 g3 Nd3 Kg2 Nxc1 Rxc1 Qxc5 Rd1 Rc7 Qe4 Ng6 Rd8 Qg5 Qa8 Kf6 Be4 Rg7 Rd4 Re7 Qb8 Rf7 Bxg6; white_wins 44; black_wins 14; draws 16; 
r3kb1r/pp2pppp/1nnq4/1N6/8/1Qp2N2/PP3PPP/R1B2RK1 b kq - acd 36; acs 120; bm Qb8; cce -61; ce -329; pm Qb8 {83} Qd7 {3} Qd8 {1}; pv Qb8 Ng5 e6 Nxe6 fxe6 Qxe6+ Be7 Re1 Kf8 Re3 Nd7 Qxd7 Qd8 Qf5+ Bf6 Re1 Ne7 Qc2 Qd5 Nxc3 Qc4 Re4 Qf7 Be3 h5 Rd1 Bxc3 Qxc3 Nf5 Rc4 Kg8 Rc7 Qf6 Qxf6 gxf6 Rdd7 Nxe3 fxe3 b5 Kf2 a5 Rc5 b4 Rcc7 Kf8 Rf7+ Kg8; white_wins 32; black_wins 22; draws 19; 
r1b1kbnr/pppp1ppp/2n5/4P3/8/2N2N2/PqPBPPPP/R2QKB1R b KQkq - acd 37; acs 997; bm Bb4; cce -202; ce -151; pm Bb4 {54} Nb4 {10} Nd8 {1} Qa3 {1} Qb6 {1} a6 {1}; pv Bb4 Rb1; white_wins 48; black_wins 17; draws 3; 
r3kb1r/1b1n1pp1/p3pn2/q5P1/Np1Np3/1P2BP1B/P1PQ4/2KR3R b kq - acd 36; acs 212; bm Rd8; cce -229; ce -264; pm exf3 {56} Nd5 {8} Rxh3 {2}; pv Rd8 gxf6 Nxf6 f4 Rd6 a3 Nd5 axb4 Qxb4 Qxb4 Nxb4 Nc5 Nd5 Kd2 Ba8 Bxe6 Rxh1 Rxh1 Nc7 Bd7+ Rxd7 Nxd7 Kxd7 Rh8 Ba3 Rh7 Ne8 Nf5 a5 Bd4 e3+ Nxe3 Be4 f5 Be7 Bxg7 Nd6 Rh5 Bf3; white_wins 49; black_wins 15; draws 2; 
rn1qkbnr/p3pppp/2p1b3/1P6/2pP4/4PN2/1P3PPP/RNBQKB1R b KQkq - acd 36; acs 125; bm cxb5; cce -280; ce -184; pm cxb5 {68}; pv cxb5 Na3 Bd5 Nxb5 e6 Qa4 Nd7 Bxc4 Ngf6 Bxd5 Nxd5 O-O a6 Nc3 Nb6 Qb3 Be7 e4 Qc7 Be3 Nc4 Nb5 Qb7 Qxc4 axb5 Rxa8+ Qxa8 Qxb5 Qxe4 Ra1 Qd5 Qxd5 exd5 Ra8+ Bd8 b4 Nb6 Ra7 Be7 b5 f6 Nd2 Nc8 Ra8 O-O Ra6 Kf7 b6 Nd6 Ra7 Ke6 b7; white_wins 49; black_wins 8; draws 8; 
r1bqkbnr/pppp3p/2n3N1/5p1Q/4P3/8/PPPP1PPP/RNB1KB1R b KQkq - acd 36; acs 175; bm Nf6; cce -187; ce -255; pm Nf6 {64}; pv Nf6 Qh3 Rg8 Nxf8 Rxf8 exf5 d5 Bb5 Qe7+ Qe3 Bxf5 Bxc6+ bxc6 d3 d4 Qxe7+ Kxe7 f3 Nd5 Kf2 Kf6 Bd2 Rab8 b3 Rbe8 Na3 c5 Nc4 Bd7 Rae1 Rxe1 Rxe1 Re8 Rxe8 Bxe8 g4 h5 g5+ Kf5 h4 a6 a4; white_wins 42; black_wins 15; draws 7; 
r1bqkbnr/pppp2pp/2n5/4Np1Q/4P3/8/PPPP1PPP/RNB1KB1R b KQkq - acd 36; acs 209; bm g6; cce -187; ce -232; pm g6 {64}; pv g6 Nxg6 Nf6 Qh3 Rg8 Nxf8 Rxf8 exf5 Qe7+ Qe3 d6 d3 Bd7 Be2 Bxf5 O-O Be6 Bf3 Ng4 Bxg4 Bxg4 Re1 Qxe3 Bxe3 O-O-O Nc3 Bd7 f3 Rf5 Kf2 Kb8 a3 Ne5 d4 Ng4+ Kg1 Nxe3 Rxe3; white_wins 42; black_wins 15; draws 7; 
r1bqk1nr/pppnbppp/3p4/4P3/2B1P3/5N2/PPP2PPP/RNBQK2R b KQkq - acd 36; acs 207; bm Nb6; cce -319; ce -165; pm Nxe5 {47} dxe5 {8} Nb6 {7} Nc5 {2}; pv Nb6 Bb3 dxe5 Qxd8+ Bxd8 Nxe5 Be6 Bxe6 fxe6 Nd3 Nf6 Nc3 Nfd7 f4 Be7 Be3 Nc4 Bf2 O-O-O b3 Na5 O-O-O b6 Kb2 Nc6 Be3 e5 f5 Nf6 h3 h6 Rhe1 Kb7 g4 a5 Bf2 Bb4 Bg3 Bxc3+ Kxc3 Rhe8; white_wins 50; black_wins 4; draws 10; 
rnbqk2r/pp1p1ppp/4p3/4P3/1b1Nn1Q1/2N5/PPP2PPP/R1B1KB1R b KQkq - acd 37; acs 600; bm Nxc3; c3 "Nxc3"; cce -190; ce -155; pm Nxc3 {51} Qa5 {39}; pv Nxc3 Qxg7; white_wins 40; black_wins 13; draws 10; 
r1bq1bkr/ppp3pp/2n5/3pp1N1/8/5N2/PPPP1PPP/R1BQK2R w KQ - acd 36; acs 91; bm d4; c3 "d4"; cce -315; ce -211; pm d4 {42} d3 {18} h4 {2}; pv d4 h6 Nh3 Bg4 dxe5 Nxe5 Nhg1 Qd6 Bf4 Nxf3+ gxf3 Re8+ Kf1 Qxf4 fxg4 c6 Nh3 Qc4+ Qd3 Qxg4 Rg1 Qe4 Rg3 Kh7 Rf3 Bc5 Ng1 Qxd3+ cxd3 Bd4 Rc1 Rhf8 Rc2 g5 Rxf8 Rxf8 Kg2 h5 Nf3 Bf6 h3 Kg6 Re2 Kf5 d4 g4 Ne5 Re8 hxg4+ hxg4 f3 gxf3+ Kxf3 Bxe5; white_wins 6; black_wins 50; draws 6; 
rn1qkbnr/p3pppp/4b3/1p6/2pP4/2N1PN2/1P3PPP/R1BQKB1R b KQkq - acd 36; acs 81; bm Bd7; cce -284; ce -179; pm Qb6 {55} Qd7 {5} Nd7 {2} Bd5 {1} Bd7 {1}; pv Bd7 Ne5 Nc6 Nxd7 Qxd7 Nxb5 Nf6 Bd2 e6 Qf3 Be7 Bxc4 O-O O-O Bb4 Bxb4 Nxb4 Rfd1 Rfb8 Nc3 Qc6 Qxc6 Nxc6 b3 Nb4 Ra5 a6 g3 g6 e4 Nc6 Raa1 a5 d5 Ne5 dxe6 Nxc4 exf7+ Kxf7 bxc4 Rb4 Rd4 a4; white_wins 46; black_wins 7; draws 8; 
r1bqk1nr/ppp1bppp/3p4/4N3/2B1P3/8/PPP2PPP/RNBQK2R b KQkq - acd 36; acs 90; bm dxe5; cce -271; ce -212; pm dxe5 {60}; pv dxe5 Qh5 g6 Qxe5 Nf6 Bh6 Rg8 Nc3 Ng4 Qf4 Nxh6 Qxh6 Qd4 Bb3 Be6 Bxe6 fxe6 Qxh7 Qh8 Qxh8 Rxh8 O-O-O Bg5+ Kb1 Ke7 f3 Rac8 Ne2 Rcd8 h3 e5 Nc3 c6 a4 Rd2 Rxd2 Bxd2 Ne2 Be3 Ka2 Ke6 Kb3; white_wins 41; black_wins 5; draws 13; 
r1b1k3/pp1pqppQ/n7/2bP4/6P1/1P3N2/P1P3P1/R1BK1B2 b q - acd 36; acs 521; bm f6; cce -444; ce -376; pm Qf6 {35} Qd6 {10} Nb4 {6} Nc7 {4} Qf8 {2} f6 {1}; pv f6 c3 b5 Bxb5 Bb7 Qg8+ Qf8 Qe6+ Qe7 Bxd7+ Kd8 Qxe7+ Bxe7 Bf5 Bxd5 Kc2 Ke8 Be3 Kf7 Rd1 Nc7 c4 Bc6 g5 g6 gxf6 Bxf6 Rd6 gxf5 Rxc6 Ne6 Ra6 Rg8 Rxa7+ Ke8 Ra8+ Nd8 Ne1 Bh4 Kd1 Kd7 Bb6 Rg4 Nf3 Nc6 Nxh4 Rxh4 Ke2 Re4+ Kf2 Rf4+ Kg3 Rg4+ Kf2; white_wins 58; black_wins 0; draws 0; 
r3kbnr/pppbpppp/2n1q3/8/3P4/2N2N2/PPP1BPPP/R1BQK2R b KQkq - acd 36; acs 117; bm Qf5; cce -92; ce -251; pm Qf5 {32} Qg6 {21} Nb4 {2} O-O-O {1} Qf6 {1} Qg4 {1}; pv Qf5 O-O e6 Nb5 O-O-O Bd3 Qh5 Bf4 e5 Nxe5 Qxd1 Raxd1 Nxe5 dxe5 Bc5 Nxc7 Kxc7 e6+ Bd6 Bxd6+ Kxd6 exd7 Kc7 Rfe1 Nh6 Re7 Rxd7 Rxd7+ Kxd7 Bxh7+ Ke7 Be4 Rc8 Re1 Kd6 f3 Ng8 c3 Nf6 Bc2 b5 Bb3 Rc7 Rd1+ Ke7 a4 a6 axb5 axb5 Kf2 Rd7 Rd4 Kf8 g4 Rxd4 cxd4 Ke7; white_wins 33; black_wins 21; draws 4; 
r1bqk1nr/ppp1bppp/8/4p2Q/2B1P3/8/PPP2PPP/RNB1K2R b KQkq - acd 37; acs 120; bm g6; cce -296; ce -189; pm g6 {56} Qd4 {2}; pv g6 Qxe5 Nf6 Bh6 Qd6 Qxd6 cxd6 Nc3 Be6 Bb3 O-O-O f3 d5 e5 Nd7 Nxd5 Bxd5 Bxd5 Nxe5 O-O-O Rhe8 Rhe1 Bc5 Bxb7+ Kxb7 Rxd8 Nd3+ Rxd3 Rxe1+ Kd2 Rg1 g4 Kc6 Kc3 Bd6 Be3 Be5+ Kb3 Rb1 Bd4 Bxh2 Bxa7 Be5; white_wins 41; black_wins 3; draws 13; 
2rq1rk1/pp2b1pp/2n1pn2/3p2B1/8/2N3PB/PP2PP1P/2RQ1RK1 b - - acd 36; acs 135; bm Qd6; cce -226; ce -179; pm Qd7 {42} Qd6 {15}; pv Qd6 Bf4 Qd7 e4 d4 Qb3 Kf7 Nd5 Rfe8 Rfe1 Bd8 Bd2 Ne5 Nxf6 Bxf6 f4 Rxc1 Rxc1 Nc6 e5 Be7 f5 Kg8 Bg2 d3 Qxe6+ Qxe6 fxe6 Bb4 Rxc6 Bxd2 Rd6 Bc1 Rxd3 Bxb2 Rd7 Bxe5 Bd5 g6 Rxb7 Bf6 Kg2; white_wins 36; black_wins 7; draws 14; 
rn2kb1r/pppqpppp/3p4/4PB2/1n1P4/5N2/PPP2PPP/RNBQ1RK1 b kq - acd 36; acs 174; bm Qxf5; cce -309; ce -184; pm Qxf5 {57}; pv Qxf5 exd6 cxd6 c4 Qd7 Nc3 g6 Re1 Bg7 Bg5 f6 Be3 N8c6 d5 Ne5 Nd4 O-O a3 Na6 Ne6 Nxc4 Nxf8 Bxf8 Qe2 Nxe3 Qxe3 Nc5 b4 Na6 Ne2 Nc7 Nd4 a5 Ne6 Nxe6 dxe6 Qc6 Rab1 Qd5 bxa5 Qxa5 Rxb7 Qxa3 Qxa3 Rxa3 Rc1 Ra2 h3; white_wins 44; black_wins 5; draws 7; 
r2qkb1r/pp2pppp/5n2/2pPP3/2B5/2N2QP1/PP3P1P/n1B2K1R b kq - acd 36; acs 177; bm a6; cce -283; ce -363; pm a6 {52} Qc8 {2} Qb6 {1}; pv a6 exf6 gxf6 Bd3 h5 Kg2 h4 Re1 Bg7 Bf4 Kf8 Rxa1 Bh6 Qh5 Bg7 Qg4 f5 Qxf5 hxg3 hxg3 Qc8 d6 Qxf5 dxe7+ Kxe7 Bxf5 Rhd8 Re1+ Kf8 Be4 Bd4 Bh6+ Kg8 Bxb7 Ra7 Be4 Re8 Re2 Rd7 Bf5 Rxe2 Nxe2; white_wins 41; black_wins 6; draws 8; 
r1bqk1nr/ppp1bp1p/6p1/4Q3/2B1P3/8/PPP2PPP/RNB1K2R b KQkq - acd 36; acs 150; bm Nf6; cce -291; ce -203; pm Nf6 {52} f6 {4}; pv Nf6 Bh6 Rg8 Nc3 Ng4 Qf4 Nxh6 Qxh6 Qd4 Bb3 c6 Qxh7 Rf8 O-O Bd7 Rad1 Qe5 f4 Qh5 Qxh5 gxh5 h3 O-O-O Kf2 Kc7 Rd3 b5 Rfd1 a5 a4 b4 Ne2 c5 Kf3 h4 g4 hxg3 Nxg3 Bc6 Rxd8 Bxd8 Nf5 Bf6; white_wins 39; black_wins 3; draws 13; 
r1b2rk1/2qnbppp/p1nppP2/6P1/1p1NP3/2N1B3/PPPQB2P/2KR3R b - - acd 37; acs 331; bm gxf6; cce -57; ce -162; pm gxf6 {53} Bd8 {3} Nxd4 {3} bxc3 {1}; pv gxf6 gxf6 Bxf6 Nxc6 Qxc6 Bd4 Bxd4 Qxd4 Ne5 Qxb4 a5 Qxd6 Qxd6 Rhg1+ Kh8 Rxd6 Rg8 Rxg8+ Kxg8 Na4 Kf8 Nb6 Ke7 Nxc8+ Rxc8 Ra6 Rc5 Ra7+ Kf6 a4 h6 b3 Kg5 Bb5 Kf4 Kb2 Ng4 Rxf7+ Kxe4 Rh7 h5 h3 Ne3 Bd3+ Kf4 Rh6 Nd1+ Ka3 Ne3 Rxe6; white_wins 29; black_wins 22; draws 4; 
r3kb1r/pb1n1p2/4pP2/qppP2B1/2p5/2N3P1/PP3PBP/R2QK2R b KQkq - acd 36; acs 620; bm O-O-O; cce -345; ce -377; pm Nb6 {28} O-O-O {26} b4 {1}; pv O-O-O O-O Qb6 dxe6 Ne5 Qe2 Qxe6 Bxb7+ Kxb7 Rfd1 Rd4 f4 Ng4 Qxe6 fxe6 Nxb5 Rd3 Rxd3 cxd3 h4 c4 Kg2 Kc6 Nc3 Bc5 Kf3 Nh2+ Ke4 Ng4 Nd1 Rf8 Rc1 Kb5 b3 d2 bxc4+ Kc6 Rb1 Bb6 Rb2 Ba5 h5 Nxf6+ Bxf6 Rxf6 Kf3; white_wins 44; black_wins 2; draws 8; 
r3kbnr/pp3ppp/n3p3/1NPpPb2/8/4BN2/PqP1BPPP/R2QK2R b KQkq - acd 36; acs 358; bm Bxc5; cce -403; ce -344; pm Bxc2 {40} Qxc2 {6} Nb4 {4} Rc8 {2} f6 {2} Be4 {1} Be7 {1} Qb4+ {1}; pv Bxc5 O-O Nh6 Nfd4 O-O Rb1 Qxa2 Qc1 Qa5 Bxh6 Bg6 Bg5 Qb6 Qd2 Bxd4 Nxd4 Qc7 Qe3 h6 Bh4 Nb8 Qg3 Qd7 Rbd1 Rc8 c4 dxc4 Bf3 Kh7 Nf5 Qc7 Ne7 Nd7 Nxg6 fxg6 Be4 Nf8 Qa3 Re8 Rd6 c3 Rc1 Rac8 Qxa7 b5 Qxc7 Rxc7 Bc6 Rb8 Rxc3 b4 Rb3 Nd7; white_wins 51; black_wins 2; draws 1; 
rnbq2k1/ppp2ppp/8/3nr3/1b6/4PN2/P2PBPPP/RN1QK2R w KQ - acd 36; acs 170; bm Nxe5; cce -354; ce -244; id "Orangutan.0796"; pm Nxe5 {50} a3 {4}; pv Nxe5 Qf6 O-O Qxe5 d4 Qe7 a3 Ba5 Bf3 c6 Qa4 Bc7 Nd2 Nd7 Qb3 N7b6 Rfe1 Nf6 Qb4 Qd8 g3 Be6 Qb2 Qe7 Rec1 Rd8 Bg2 h5 a4 a5 Rc5 Bd5 Bxd5 Rxd5 Rxd5 Nfxd5 e4 Nb4 h4; white_wins 4; black_wins 47; draws 3; 
r1b1kb1r/pp1n1qp1/2n1ppp1/3pP2Q/3P1N2/8/PP1N1PPP/R1B1K2R w KQkq - acd 36; acs 121; bm Qxh8; cce -296; ce -239; pm Qxh8 {54}; pv Qxh8 Nxd4 O-O g5 Nh5 Nxe5 Nb3 Ne2+ Kh1 Bd7 f4 Ng6 Qh7 gxf4 Nxf4 Nexf4 Bxf4 Nxf4 Rxf4 g5 Qxf7+ Kxf7 Rf3 Bd6 Rh3 Kg6 Rd1 e5 Rhd3 Be6 Rxd5 Bxd5 Rxd5 Bc7 Rd7 Bb6 g4 Rc8 Nd2 Rc1+ Kg2 Rc2 Kf3 Rxb2 Nc4 Rf2+ Kg3 Rxa2 Nxb6 axb6; white_wins 7; black_wins 43; draws 4; 
rnb1kbnr/pp1p1qpp/2p5/8/4p3/2NPN3/PPP2PPP/R1BQKB1R b KQkq - acd 36; acs 409; bm exd3; cce -263; ce -182; pm exd3 {52} Nf6 {1} d5 {1} d6 {1}; pv exd3 Bxd3 Nf6 O-O d5 Re1 Kd8 Nf5 Na6 Nd4 Nc7 Bf4 Bc5 Nf3 Re8 Qd2 Qf8 Na4 Bd6 c4 Be6 Bxd6 Qxd6 c5 Qf8 Re2 Kc8 Rae1 g6 b4 Bd7 Rxe8+ Nfxe8 Ne5 Nf6 Qe3 Qg7 a3 Ng4 Nxg4 Bxg4 Qe7 Qxe7 Rxe7 b5 cxb6 Kd8 Rxc7 axb6 Nxb6 Rxa3; white_wins 39; black_wins 7; draws 8; 
r2qkb1r/pp3ppp/2p1pnb1/4N3/3P2PP/2P5/PP3P2/R1BQKB1R b KQkq - acd 42; acs 1144; bm Bd6; c3 "Bd6"; cce -247; ce -173; pm Bd6 {47} Qd5 {5} Nd7 {3} h5 {3} Qa5 {1}; pv Bd6 Qe2; white_wins 38; black_wins 8; draws 8; 
rnb1k2r/ppqp1ppp/4pP2/8/3N4/2P5/P1P2PPP/R1BQKB1R b KQkq - acd 36; acs 211; bm Qxc3+; cce -359; ce -626; pm Qxc3+ {54}; pv Qxc3+ Qd2 Qxd2+ Kxd2 gxf6 Nb5 Kd8 Bb2 e5 Nd6 Rg8 Ba3 Rg7 Bc4 b6 Bd5 Nc6 Nxf7+ Rxf7 Bxf7 Bb7 Bd5 Na5 Bxb7 Nxb7 c4 Rc8 Rac1 Na5 Kd3 f5 Rhd1 e4+ Kd4 Rc6 Bb4 Rh6 Bxa5 bxa5 Ke5 Rxh2 Rg1 Rh5 c5 Kc7 Rcd1 Kc6 Rd6+ Kc7; white_wins 45; black_wins 3; draws 4; 
rnb1k2r/ppqp1ppp/4pP2/8/1b1N4/2N5/PPP2PPP/R1BQKB1R b KQkq - acd 36; acs 139; bm Qe5+; cce -342; ce -462; pm Bxc3+ {54} Qe5+ {1}; pv Qe5+ Be3 Qxf6 Nb5 O-O Qd3 Nc6 Nd6 Ne5 Qd2 Qe7 O-O-O f5 g3 h6 h4 Bxd6 Qxd6 Qxd6 Rxd6 Nf7 Rd1 d5 Bg2 Bd7 Ne2 Rfe8 Rhe1 a5 Nf4 Rac8 Kb1 a4 a3 Kh7 h5 Rc4 Ng6 Rcc8 Bd4 Bb5 f3 Kg8 Bc3 Bd7 Nf4 Nd6 Ka2 Nf7 Nd3 Nd6; white_wins 44; black_wins 4; draws 4; 
rn2kb1r/pp3ppp/2pp4/8/1q1BnPb1/2N2N2/PPP1B1PP/R2Q1RK1 b kq - acd 36; acs 137; bm d5; cce -231; ce -224; pm d5 {52} Nxc3 {1}; pv d5 a3 Qe7 Nxe4 dxe4 Ng5 Bxe2 Qxe2 Nd7 Rad1 O-O-O Bxa7 h6 Nxe4 Nf6 Rxd8+ Qxd8 Nxf6 gxf6 Rd1 Bd6 Qg4+ Kc7 Bf2 Qe7 Qf5 c5 Re1 Qd7 Qxf6 Re8 Rxe8 Qxe8 g3 b6 c4 Qe7 Qxe7+ Bxe7 Kg2 Kd6 g4 Bf6 b3 Bd4 Kf3 Bxf2 Kxf2; white_wins 32; black_wins 5; draws 15; 
rn2kbnr/p3pppp/1q2b3/1p4N1/2pP4/2N1P3/1P3PPP/R1BQKB1R b KQkq - acd 36; acs 119; bm Nf6; cce -282; ce -218; pm Nf6 {49} g6 {4}; pv Nf6 Nxe6 fxe6 Qf3 Nc6 b3 Rc8 bxc4 bxc4 Be2 Nb4 O-O g5 Qg3 Bg7 Qxg5 O-O Bd2 Nbd5 Rfb1 Qd8 Rc1 Nxc3 Bxc3 Qd5 Qh4 Qe4 Qxe4 Nxe4 Be1 Nd6 Rxa7 Bf6 f4 Rb8 Bxc4 Nxc4 Rxc4 Rb2 h3 Kf7 Rc1 Rfb8 Bg3 R2b3; white_wins 39; black_wins 6; draws 7; 
2b1r1k1/rpq2ppp/p4b2/3Np3/P3P3/5B2/1PP4P/R2Q1R1K b - - acd 36; acs 77; bm Qd7; cce -171; ce -211; pm Qd8 {43} Qc6 {9}; pv Qd7 Bh5 Kh8 Qd2 Bh4 Rxf7 Qd6 Qe3 Qh6 Raf1 Rg8 Qxa7 Qxh5 Qg1 Bg5 Ne7 Be6 R7f5 Bxf5 Rxf5 Rd8 Qxg5 Qd1+ Qg1 Qxc2 Qe1 h6 Nd5 Qxb2 a5 Rc8 Rf1 Qa3 Qd2 Rc4 Qd1 Rc8 Kg2 Qxa5 Ne7 Re8 Ng6+ Kh7 Nf8+ Kh8 Qf3 Qd2+ Kh1 Qg5 Qf7 Qg4 Re1 Rd8 Ng6+ Kh7 Nxe5 Qg5; white_wins 34; black_wins 14; draws 4; 
2b1r1k1/rpq1bppp/p4P2/4p3/P3P3/2N2B2/1PP4P/R2Q1R1K b - - acd 36; acs 43; bm Bxf6; cce -171; ce -207; pm Bxf6 {52}; pv Bxf6 Nd5 Qd7 Bh5 Kh8 Qd2 Bh4 Rxf7 Qd6 Qe3 Qh6 Raf1 Rg8 Qxa7 Qxh5 Qg1 Bg5 Ne7 Be6 R7f5 Bxf5 Rxf5 Rd8 Qxg5 Qd1+ Qg1 Qxc2 Qe1 h6 Nd5 Qxb2 a5 Rc8 Rf1 Qa3 Qe3 Qxe3 Nxe3 Rc5 Ra1 h5 Kg2 Rb5 Ra2 Kh7 Kf3 g5 h3 Kg6 Ra3 Kf6 Nd5+ Kg6 Ne7+ Kg7 Nf5+ Kg6 Nd6 Rb2 Nc4 Rh2; white_wins 34; black_wins 14; draws 4; 
1rbqkb1r/5ppp/1p2pn2/1BPp4/1P6/4P3/P4PPP/RN1QK1NR b KQk - acd 36; acs 169; bm Ke7; cce -196; ce -194; pm Ke7 {50} Nd7 {2}; pv Ke7 c6 g6 Qb3 Bg7 Nc3 e5 Nf3 Be6 Ng5 Qd6 O-O e4 h3 Ra8 a4 Rhb8 Rad1 Qe5 Nxe6 fxe6 Be2 Rc8 Rc1 Kf7 Nb5 Ne8 Nd4 Qd6 f3 Bxd4 exd4 e3 a5 Rxc6 a6 Rxc1 Rxc1 Nc7 b5 Qf4 Rc6; white_wins 35; black_wins 12; draws 5; 
rBbqkb1r/5ppp/1p2pn2/2Pp4/1P6/4P3/P4PPP/RN1QKBNR b KQkq - acd 36; acs 230; bm Rxb8; cce -196; ce -169; pm Rxb8 {52}; pv Rxb8 Bb5+ Ke7 c6 g6 Qb3 Bg7 Nc3 Qd6 Rd1 Rd8 Nf3 e5 Ng5 Be6 O-O e4 Ne2 Rbc8 h3 Bf5 g4 Be6 a4 Kf8 Ba6 Rxc6 Nxe6+ fxe6 Nd4 Nd7 Nxc6 Qxc6 Bb5 Qd6 Bxd7 Qxd7 Rc1 Kf7 b5 Rc8 Rxc8 Qxc8 Kg2; white_wins 35; black_wins 12; draws 5; 
rnbqkbnr/ppp3pp/3p4/4pp2/2BPP3/5N2/PPP2PPP/RNBQK2R b KQkq - acd 36; acs 1468; bm Nc6; c3 "Nc6"; cce -102; ce -162; pm Nc6 {17} exd4 {16} fxe4 {15} c6 {5}; pv Nc6 Ng5 Qe7 Bf7+ Kd8 Bc4 Nh6 d5 Nb4 h4 Qe8 Nc3 fxe4 a3 Na6 Ncxe4 Nc5 Nxc5 dxc5 Ne6+ Bxe6 dxe6+ Kc8 Bxh6 gxh6 Rh3 Be7 Rf3 Rg8 Qd7+ Qxd7 exd7+ Kxd7 O-O-O+ Bd6 Bxg8 Rxg8 Rf7+ Ke6 Rxh7 Rxg2 Rxh6+ Kf5 Rf1 e4 Rh7 Bf4+ Kb1; white_wins 27; black_wins 15; draws 10; Opening ECO:C41; Variation Philidor: Lopez counter-gambit; Comment (replace) *pwo; 1. e4 e5 2. Nf3 d6 3. Bc4 f5 4. d4 *; 
r1b1k3/ppp2qpp/2P2n2/2b1p3/2B5/8/PPPP1PPP/RNBQK2R b KQq - acd 36; acs 259; bm Qxc4; cce -392; ce -373; pm Qxc4 {50} Bxf2+ {1}; pv Qxc4 d3 Qd5 Qf3 Qxf3 gxf3 bxc6 Be3 Bd6 Nd2 Bf5 O-O-O Bg6 Rde1 Kf7 Rhg1 Bh5 Ne4 Rb8 Rg3 g6 b3 Ba3+ Kb1 Ra8 Bd2 Nxe4 Rxe4 Bd6 f4 Re8 fxe5 Rxe5 Rxe5 Bxe5 Rg5 Bxh2 Ra5 Bd6 Rxa7; white_wins 46; black_wins 1; draws 4; 
rn1qkbnr/pbppp1pp/1p6/5P2/3P4/3B4/PPP2PPP/RNBQK1NR b KQkq - acd 36; acs 90; bm Bxg2; cce -200; ce -222; pm Bxg2 {45} Nf6 {12} Nc6 {1}; pv Bxg2 Qh5+ g6 fxg6 Bg7 gxh7+ Kf8 Nf3 Nf6 Qg6 Bxf3 Rg1 Rxh7 Qf5 Bd5 Qg5 Be4 Bxe4 Nxe4 Qd5 Nd6 Qxa8 Nc6 Qxd8+ Nxd8 c3 Ne6 Nd2 Rxh2 Nf3 Rh5 Ng5 Nxg5 Bxg5 Bh6 Bxh6+ Rxh6 O-O-O Ne4 Rh1 Rf6 Rh8+ Kf7 Rc8 Nxf2 Rd2 c6 Rc7 Ne4 Rg2 d6 Kc2; white_wins 34; black_wins 11; draws 6; 
rnb1k2r/pp1p1ppp/4pP2/8/3N4/2q5/P1PQ1PPP/R1B1KB1R b KQkq - acd 41; acs 2938; bm Qxd2+; cce -373; ce -456; pm Qxa1 {53}; pv Qxd2+ Kxd2 gxf6 Nb5 Kd8 Bb2 e5 Nd6 Rg8 Bd3 h5 g3 b6 Bc4 Nc6 Bxf7 Rg4 Bxh5 Ra4 Bf7 Ke7 Bb3 Ra5 Nc4 Ra6 Ne3 Bb7 Nf5+ Kf8 Nd6 Na5 Nxb7 Nxb7 f4 d6 Rhf1 Rd8 Ke3 b5 a4 bxa4 fxe5 dxe5 Bc4 Rb6 Bxe5; white_wins 45; black_wins 3; draws 2; 
r1b1kb1Q/pp1n1qp1/4ppp1/3pP3/3n1N2/8/PP1N1PPP/R1B1K2R w KQq - acd 36; acs 164; bm O-O; cce -284; ce -267; pm O-O {39} Rb1 {10} Kf1 {1}; pv O-O g5 Nh5 Nxe5 Nb3 Ng6 Qh7 Nc2 Rb1 e5 Bd2 Bf5 Ng3 Bd3 Qh5 Nb4 Bxb4 Bxb4 Rbc1 Bxf1 Kxf1 Nf4 Qxf7+ Kxf7 Rc7+ Kg6 Rxb7 a5 a3 Bf8 Ne2 Nd3 Nbc1 Nc5 Rb5 a4 Ke1 Rc8 f3 d4 Kd2 Bd6 Rb6 Be7; white_wins 7; black_wins 39; draws 4; 
r1bqkbnr/pppp1ppp/8/1P2Bn2/8/4P3/P1PP1PPP/RN1QKBNR b KQkq - acd 36; acs 696; bm d5; cce 311; ce -162; id "Orangutan.0863"; pm d6 {21} Bd6 {7} d5 {6} Nf6 {5} Bc5 {4} f6 {3} b6 {2} Qg5 {1} Qe7 {1}; pv d5 c4 Bd6 Bxd6 Qxd6 Nf3 Nge7 d4 O-O Nbd2 Re8 Be2 dxc4 Nxc4 Qh6 Bd3 Nd6 Nxd6 cxd6 O-O Bg4 h3 Bh5 Be2 d5 Rc1 Qb6 Qa4 Bxf3 Bxf3 a6 bxa6 Qxa6 Qb3 Qxa2 Qxb7 f6; white_wins 5; black_wins 40; draws 5; 
r1b1k2r/1p1p1ppp/p4n2/4P3/3q1Bn1/3B4/PPP3PP/R2Q1R1K b kq - acd 38; acs 822; bm Nxe5; c3 "Nf2+"; cce -355; ce -151; pm Nf2+ {49} Nxe5 {1}; pv Nxe5 Bxe5 Qxe5; white_wins 44; black_wins 4; draws 2; 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

zullil
Posts: 5552
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: refuted opening lines

Post by zullil » Wed Jul 31, 2019 12:00 pm

Dann Corbit wrote:
Tue Jul 30, 2019 11:48 pm
Here are some opening positions with a computer evaluation of -150 centipawns or worse which were played at least 50 times in my database. They are sorted so that the most frequently occurring are on top. There are a few that are questionable (where the cce value is a lot better for the side to move than the ce value). The cce value is based on actual game outcomes, so the two values really ought to agree at least roughly.

Code: Select all

r1b2rk1/2qnbppp/p1nppP2/6P1/1p1NP3/2N1B3/PPPQB2P/2KR3R b - - acd 37; acs 331; bm gxf6; cce -57; ce -162; pm gxf6 {53} Bd8 {3} Nxd4 {3} bxc3 {1}; pv gxf6 gxf6 Bxf6 Nxc6 Qxc6 Bd4 Bxd4 Qxd4 Ne5 Qxb4 a5 Qxd6 Qxd6 Rhg1+ Kh8 Rxd6 Rg8 Rxg8+ Kxg8 Na4 Kf8 Nb6 Ke7 Nxc8+ Rxc8 Ra6 Rc5 Ra7+ Kf6 a4 h6 b3 Kg5 Bb5 Kf4 Kb2 Ng4 Rxf7+ Kxe4 Rh7 h5 h3 Ne3 Bd3+ Kf4 Rh6 Nd1+ Ka3 Ne3 Rxe6; white_wins 29; black_wins 22; draws 4; 
This one needs review for sure.



Cfish-dev:
+1.18 1... Bd8 2. fxg7 Re8 3. Na4 Nce5 4. Rhf1 Bb7 5. Qxb4 Bxe4 6. h4 Qa5 7. a3 Qxb4 8. axb4 Kxg7 9. h5 Be7 10. b3 d5 11. c3 Rec8 12. Kb2 Bd6 13. Bf4 Kg8 14. Rd2 Bc7 15. Bg3 Kg7 16. Rdd1 Kg8 17. Ka2 Bb8 18. Bf4 Bd6 19. Kb2 Bc7 20. Be3 Bd6 21. Rf2 Be7 22. Bf4 Bd6 23. Rd2 Bc7 24. Bh2 Bd8 25. Rd1 Bc7 26. Nc5 Nxc5 27. bxc5 Nd7 28. c6 Nb8 29. Bxc7 Rxc7 30. Rdf1 Nxc6 31. Nxc6 Rxc6 (depth 54, 1:14:58)

Lc0:
+1.10 1... Bd8 2. Nb1 Bb7 3. fxg7 Kxg7 4. Nxc6 Qxc6 5. Qxb4 Qxe4 6. Qd2 Ba5 7. c3 Ne5 8. Rhf1 Kg8 9. b3 Bc7 10. Kb2 Qh4 11. Rf2 Qh3 12. Bd4 Be4 13. c4 Rab8 14. Nc3 Bf5 15. Qf4 Rfd8 16. Rff1 Ng6 17. Qg3 Qxg3 18. hxg3 Ne5 19. Rf4 Bg6 20. Rh4 Rdc8 21. Ne4 Bxe4 22. Rxe4 a5 (depth 27, 0:11:25)

jdart
Posts: 3803
Joined: Fri Mar 10, 2006 4:23 am
Location: http://www.arasanchess.org

Re: refuted opening lines

Post by jdart » Wed Jul 31, 2019 2:21 pm

#1 in the list is from the Borg opening (1. e4 g5), which just goes to show how bad that is.

Uri Blass
Posts: 8526
Joined: Wed Mar 08, 2006 11:37 pm
Location: Tel-Aviv Israel

Re: refuted opening lines

Post by Uri Blass » Wed Jul 31, 2019 3:10 pm

For the positions of dann corbit I wonder what is the pgn that he used because I can find in chesstempo database more common positions
than the positions at the top of the positions that he posted when I cannot see 50 games in chesstempo in many of the positions that he posted.

I will show one common blunder of humans



A lot of humans played Nxd5 (99 humans based on chesstempo database)
and the position after Nxd5 Nxd5 happened in 95 games based on chesstempo.

Note that I was surprised to see in the israeli league a player with fide rating near 1600 fall into this trap and it seems that inspite of the fact that most 1600 players who play the first line with white know about the trap there are many chess players who do not know and chesstempo have games of players with low fide rating.


I believe that another known trap also happened a lot at weaker level.



Based on chesstempo only 4 humans played here Nf6 but I cannot believe it because I know that it is a common trap that weak players fall into it again and again and it seems that chesstempo database almost does not have games of weak players that are weak enough to fall into the second trap.

I guess that if you take games from chess sites you are going to find clearly more games when humans played 4....Nf6 and
I am not sure if the losing queen trap is less common than the losing knight trap.

Dann Corbit
Posts: 9894
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: refuted opening lines

Post by Dann Corbit » Wed Jul 31, 2019 8:16 pm

zullil wrote:
Wed Jul 31, 2019 12:00 pm
Dann Corbit wrote:
Tue Jul 30, 2019 11:48 pm
Here are some opening positions with a computer evaluation of -150 centipawns or worse which were played at least 50 times in my database. They are sorted so that the most frequently occurring are on top. There are a few that are questionable (where the cce value is a lot better for the side to move than the ce value). The cce value is based on actual game outcomes, so the two values really ought to agree at least roughly.

Code: Select all

r1b2rk1/2qnbppp/p1nppP2/6P1/1p1NP3/2N1B3/PPPQB2P/2KR3R b - - acd 37; acs 331; bm gxf6; cce -57; ce -162; pm gxf6 {53} Bd8 {3} Nxd4 {3} bxc3 {1}; pv gxf6 gxf6 Bxf6 Nxc6 Qxc6 Bd4 Bxd4 Qxd4 Ne5 Qxb4 a5 Qxd6 Qxd6 Rhg1+ Kh8 Rxd6 Rg8 Rxg8+ Kxg8 Na4 Kf8 Nb6 Ke7 Nxc8+ Rxc8 Ra6 Rc5 Ra7+ Kf6 a4 h6 b3 Kg5 Bb5 Kf4 Kb2 Ng4 Rxf7+ Kxe4 Rh7 h5 h3 Ne3 Bd3+ Kf4 Rh6 Nd1+ Ka3 Ne3 Rxe6; white_wins 29; black_wins 22; draws 4; 
This one needs review for sure.



Cfish-dev:
+1.18 1... Bd8 2. fxg7 Re8 3. Na4 Nce5 4. Rhf1 Bb7 5. Qxb4 Bxe4 6. h4 Qa5 7. a3 Qxb4 8. axb4 Kxg7 9. h5 Be7 10. b3 d5 11. c3 Rec8 12. Kb2 Bd6 13. Bf4 Kg8 14. Rd2 Bc7 15. Bg3 Kg7 16. Rdd1 Kg8 17. Ka2 Bb8 18. Bf4 Bd6 19. Kb2 Bc7 20. Be3 Bd6 21. Rf2 Be7 22. Bf4 Bd6 23. Rd2 Bc7 24. Bh2 Bd8 25. Rd1 Bc7 26. Nc5 Nxc5 27. bxc5 Nd7 28. c6 Nb8 29. Bxc7 Rxc7 30. Rdf1 Nxc6 31. Nxc6 Rxc6 (depth 54, 1:14:58)

Lc0:
+1.10 1... Bd8 2. Nb1 Bb7 3. fxg7 Kxg7 4. Nxc6 Qxc6 5. Qxb4 Qxe4 6. Qd2 Ba5 7. c3 Ne5 8. Rhf1 Kg8 9. b3 Bc7 10. Kb2 Qh4 11. Rf2 Qh3 12. Bd4 Be4 13. c4 Rab8 14. Nc3 Bf5 15. Qf4 Rfd8 16. Rff1 Ng6 17. Qg3 Qxg3 18. hxg3 Ne5 19. Rf4 Bg6 20. Rh4 Rdc8 21. Ne4 Bxe4 22. Rxe4 a5 (depth 27, 0:11:25)
I assume that those scores must be from the standpoint of white?
I only did a 50 ply search, but it seems as though the score is over a pawn against the side to move (black):

Code: Select all

Searching: r1b2rk1/2qnbppp/p1nppP2/6P1/1p1NP3/2N1B3/PPPQB2P/2KR3R b - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -0.28   00:00    7633  gxf6 gxf6 bxc3 Qxc3 
 2   +0.17   00:00  326949  gxf6 gxf6 Bxf6 
 3   +0.08   00:00  638751  gxf6 gxf6 Bxf6 
 4   -0.58   00:00  989868  gxf6 gxf6 Bxf6 Nxc6 Qxc6 
 5   -0.79   00:00   1321K  gxf6 gxf6 Bxf6 Nxc6 Qxc6 
 6   -1.05   00:00   1651K  gxf6 gxf6 Bxf6 Nxc6 Qxc6 Rhg1+ Kh8 
 7   -0.96   00:00   2326K  bxc3 Qxc3 Bb7 fxe7 Rfc8 
 8   -1.19   00:00   2670K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfc8 Rd2 
 9   -1.30   00:00   3002K  Nxf6 gxf6 Bxf6 Na4 Bb7 Nxc6 Qxc6 Nb6 Qxe4 Nxa8 
10   -1.31   00:00   3306K  Nxd4 fxe7 Nxe2+ Nxe2 Re8 Qxb4 Rxe7 Qxd6 Qxd6 Rxd6 Bb7 Nc3 Ne5 Rhd1 a5 h3 
11   -1.21   00:00   3632K  Nxd4 fxe7 Nxe2+ Nxe2 Re8 Qxb4 Bb7 Qxd6 Qxd6 Rxd6 Rxe7 Rhd1 Ne5 
12   -1.08   00:00   3972K  gxf6 gxf6 bxc3 Qxc3 Bxf6 Qxc6 Ra7 Qxc7 Rxc7 Rhg1+ Kh8 
13   -1.22   00:00   4298K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd2 Nc5 Bxc5 dxc5 Qxc5 Rxe7 Rhd1 Ree8 Bf3 
14   -1.12   00:00   4598K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd4 Rxe7 Rhd1 d5 exd5 exd5 Rxd5 Rae8 
15   -1.18   00:00   5078K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfc8 Rd2 Nc5 Bxc5 Bxe4 Rhd1 Qxc5 Qxc5 Rxc5 a4 Rc7 h4 Rxe7 Rxd6 a5 
16   -1.32   00:00   5828K  bxc3 Qxc3 Bb7 fxe7 Rfe8 Nxc6 Bxc6 Rd4 d5 exd5 exd5 Rhd1 Qe5 Kb1 Qxe7 Qxc6 Qxe3 Qxd7 Qxe2 Qxd5 
17   -1.31   00:00   6049K  bxc3 Qxc3 Bb7 fxe7 Rfc8 Nxc6 Bxc6 Rd2 Qb7 Qb3 Qc7 Qb4 Ne5 Rhd1 Qxe7 Rxd6 Bb5 Rd8+ Qxd8 Rxd8+ Rxd8 Bxb5 axb5 Qxb5 
18   -1.26   00:00   6591K  bxc3 Qxc3 Bb7 fxe7 Rfc8 Nxc6 Bxc6 Rd2 Qb7 Qb3 Bxe4 Qxb7 Bxb7 Rhd1 d5 Rd3 Re8 Rc3 Rxe7 Rc7 Bc8 Rf1 Re8 
19   -1.00   00:00   7577K  bxc3 Qxc3 Bb7 fxe7 Rfc8 Nxc6 Bxc6 Rd2 Qb7 Qb3 Bxe4 Qxb7 Bxb7 Rhd1 d5 Rd3 Re8 Rc3 Rac8 Rxc8 Bxc8 Rd3 Rxe7 Rc3 Re8 
20   -1.23   00:01  10610K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd4 d5 h4 Qd6 Rhd1 Bb5 Bf3 Rac8 Qd2 Qxe7 exd5 Ne5 d6 Nxf3 dxe7 Nxd2 R1xd2 Rxe7 h5 
21   -1.44   00:01  14758K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd2 Nc5 Bxc5 dxc5 Qxc5 Rxe7 Rhd1 Ree8 Rd6 Rac8 Bxa6 Bxe4 Qxc7 Rxc7 c4 Kf8 Bb5 Ra8 Rd8+ Rxd8 Rxd8+ Ke7 Rg8 
22   -1.24   00:02  19879K  bxc3 Qxc3 Bb7 fxe7 Rfc8 Nxc6 Bxc6 Qb4 Rab8 Qxd6 Qb7 Bd4 Bxe4 e8=R+ Rxe8 Bxa6 Qc6 Qxc6 Bxc6 Rhg1 Ra8 Bc4 Bd5 Bxd5 exd5 Bc3 Rxa2 
23   -1.17   00:02  22459K  bxc3 Qxc3 Bb7 fxe7 Rfc8 Nxc6 Bxc6 Qb4 Rab8 Qxd6 Qb7 Bd4 Bxe4 e8=R+ Rxe8 Bxa6 Qd5 Qxd5 exd5 Rhf1 Ne5 Be2 Nc6 Bh5 Re7 Bc3 Nb4 Bxb4 Rxb4 Bf3 Rb5 h4 
24   -1.47   00:03  33311K  bxc3 Qxc3 Bb7 fxe7 Rfc8 Nxc6 Bxc6 Qb4 Rab8 Qxd6 Qb7 b3 Bxe4 c4 Bxh1 Qxd7 Qxd7 Rxd7 Re8 Bc5 a5 Kb2 h6 Rd1 Be4 gxh6 gxh6 Rg1+ Kh7 Bh5 Bg6 Bxg6+ fxg6 Bd6 Rbc8 Kc3 Kg7 Rf1 
25   -1.47   00:03  35968K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfc8 Qb4 Rab8 Qxd6 Qb7 Bd4 Bxe4 e8=Q+ Rxe8 Bxa6 Qd5 Qxd5 exd5 Rhg1 Ne5 Bxe5 Rxe5 a4 Ra8 Bb5 Re6 b3 h6 h4 hxg5 hxg5 
26   -1.48   00:05  55694K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd2 Nc5 Bxc5 dxc5 Qxc5 Rxe7 Rhd1 Kf8 Bf3 Rc8 Kb1 Ba4 Qxc7 Rexc7 b3 Bc6 c4 h6 gxh6 gxh6 Kb2 Ke7 Rf2 Rd7 Rxd7+ Bxd7 e5 Rc5 Re2 Bc6 Bxc6 Rxc6 
27   -1.38   00:07  67238K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd4 Rxe7 Rhd1 d5 h4 Rae8 Bxa6 Ra8 Bb5 Ne5 Bf4 Bxb5 Qxc7 Rxc7 Bxe5 Rcc8 exd5 exd5 a3 Re8 Rxd5 Bc6 
28   -1.45   00:15 146695K  bxc3 Qxc3 Bb7 Nxc6 Bxc6 fxe7 Rfe8 Rd4 Rxe7 Rhd1 d5 h4 Qg3 exd5 exd5 Qxc6 Qxe3+ R1d2 Rae8 Qxd5 Qg3 Bd1 Nf8 Qf3 Qb8 Qf4 Qxf4 Rxf4 Ng6 Ra4 Re1 
29   -1.23   00:21 201685K  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Qa5 b3 Bb7 Bh5 Kxg7 Nf3 Bxe4 Qxd6 Rc8 Rf2 Kg8 Bxf7+ Nxf7 Qxd7 Be7 Nd4 Qe5 Nb6 Rcd8 Qxe6 Qxe6 Nxe6 Rxd1+ Kxd1 Bd6 
30   -0.95   00:32 302155K  Bd8 fxg7 Re8 Nb1 Nxd4 Qxd4 a5 Qxd6 Qxd6 Rxd6 Be7 Rdd1 Bc5 Bxc5 Nxc5 Bb5 Re7 Rd8+ Kxg7 Nd2 Rc7 Rf1 Bb7 Rxa8 Bxa8 Rf4 e5 Rf5 Nxe4 Be2 Re7 Nc4 Bd5 Nxe5 Bxa2 
31   -1.35   00:51 465778K  Bd8 fxg7 Re8 Na4 Bb7 Rhf1 Nxd4 Qxd4 Rc8 Rd2 Qa5 Qxd6 Ne5 b3 Be7 Bb6 Bxd6 Bxa5 Be7 h4 Kxg7 Bb6 Ng6 Bd4+ Kg8 Bf6 Bxf6 gxf6 Nxh4 Nb6 Rcd8 Nd7 Rc8 Ne5 Red8 Bd3 Ng6 Rg1 a5 Rh2 Rc5 Nc4 Ba6 Kb2 Bxc4 Bxc4 
32   -1.52   01:20 728423K  Bd8 fxg7 Re8 Na4 Bb7 Rhf1 Nce5 Qxb4 Bxe4 h4 Qb7 Qa3 Be7 Nc3 Bg2 Rf2 Bh3 Nb3 Kxg7 Qa4 Rab8 h5 Qb4 Rd4 Qb6 Ne4 d5 Nf6 Bxf6 gxf6+ Kh8 Bxa6 Bf5 Bf4 Nc5 Nxc5 Qxb2+ Kd2 
33   -1.18   01:24 762732K  Bd8 fxg7 Re8 Na4 Bb7 Rhf1 Nce5 Qxb4 Bxe4 h4 Qa5 Qxa5 Bxa5 h5 Kxg7 Rf4 Bb7 Rg1 Rec8 Nb3 Bd8 Nc3 Rab8 Kb1 Kf8 Ne4 Bb6 Bxb6 Bxe4 Rxe4 Rxb6 Ra4 Rcb8 Bxa6 Rb4 Rxb4 Rxb4 Be2 Ke7 Rd1 Re4 
34   -1.27   01:51   1008M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qb7 Qa3 Be7 Nc3 Bg2 Rf2 Bh3 Rg1 d5 Qb3 Qa7 Nxd5 exd5 Qxd5 Rab8 Rxf7 Nxf7 Bh5 Ne5 Bxf7+ Nxf7 Nf5 Bxf5 Bxa7 Rb5 Qf3 Be4 Qf4 Bd6 Qe3 Be5 Bd4 Bg6 Rf1 Rd5 Bxe5 Rdxe5 
35   -0.93   02:16   1242M  Bd8 fxg7 Re8 Nb1 Nxd4 Qxd4 a5 Qxd6 Qxd6 Rxd6 Be7 Rdd1 Bc5 Bxc5 Nxc5 e5 Bb7 Rhe1 Bd5 c4 Bg2 Rd6 Kxg7 Nd2 a4 h4 b3 a3 Be4 Rf1 Bf5 Rf4 Rac8 Rfd4 h6 gxh6+ Kxh6 Bd1 Kh7 Bf3 
36   -0.75   02:57   1620M  Bd8 fxg7 Re8 Nxc6 Qxc6 Nb1 a5 Qxd6 Qxd6 Rxd6 Be7 Rdd1 Bc5 Bxc5 Nxc5 Rhe1 Bb7 e5 Bd5 c4 Bg2 Nd2 a4 Nf1 Kxg7 Ng3 Kf8 Nh5 Be4 Rd4 Red8 Rxd8+ Rxd8 Rd1 Rxd1+ Kxd1 a3 bxa3 bxa3 Kd2 
37   -1.11   04:10   2285M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 Qxa5 Bxa5 Rf4 Bb7 Nf3 Nxf3 Bxf3 Bxf3 Rxf3 Ne5 Rh3 Kxg7 Bd4 Kg8 Nc3 Nd7 Ne4 d5 Nf6+ Nxf6 Bxf6 Rec8 b3 Ra7 c3 Bb4 Kb2 Bc5 Rf1 Bd6 h5 Rac7 h6 
38   -1.12   05:05   2786M  Bd8 fxg7 Re8 Na4 Bb7 Rhf1 Nce5 Qxb4 Bxe4 h4 Qa5 Qxa5 Bxa5 Rf4 Bb7 Nf3 Bxf3 Bxf3 d5 Bh5 Ng6 Rff1 Kxg7 Kb1 Kg8 b3 Nde5 Bd4 Bc7 Bb2 Re7 Rde1 Nd7 Bf3 Bg3 h5 Nf4 Bc1 Rc8 Bxf4 Bxf4 Bxd5 
39   -0.97   05:59   3279M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 Qxa5 Bxa5 Rf4 Bb7 Rdf1 Kxg7 Nb3 Bc7 Nc3 Bg2 Rg1 Bc6 h5 Bb6 Bd4 Rg8 Bxb6 Nxb6 Nd4 Rgc8 h6+ Kg8 Nxc6 Rxc6 Rgf1 Kf8 Bh5 Rc7 Kb1 d5 Be2 Rc6 a3 Nbc4 
40   -1.08   07:44   4209M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 Qxa5 Bxa5 Rf4 Bb7 Nf3 Bxf3 Bxf3 Nxf3 Rxf3 Ne5 Rh3 Kxg7 Bd4 Kg8 Nc5 dxc5 Bxe5 Red8 Rb3 Rd5 Bf6 Rxd1+ Kxd1 Bd8 Rg3 Kf8 Be5 Ra7 Rd3 Ke8 b3 Rd7 Rxd7 Kxd7 Ke2 Kc6 c4 Be7 Kf3 Kd7 Ke4 
41   -1.06   13:51   7528M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 Bd2 Qxb4 Bxb4 Be7 Nc3 Bb7 Nb3 d5 Bxe7 Rxe7 h5 Kxg7 Na5 Bc8 h6+ Kf8 Bh5 Rb8 Nb3 Nc6 Ne2 Nde5 Ned4 Rc7 Rf6 Nxd4 Nxd4 Ke7 Kb1 Rc4 b3 Bd7 Re1 Rxd4 Rxe5 Kd6 Re1 Rg8 Bxf7 Rxg5 
42   -1.25   15:04   8201M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 a3 Qxb4 axb4 Kxg7 b3 Be7 h5 Kg8 c3 Reb8 Rf4 Bb7 Rf2 Rf8 Rg1 Be4 Kd2 Bd8 Rf4 Bb7 Kc2 Be7 Kb2 Kh8 Rff1 Be4 c4 Rab8 b5 axb5 cxb5 Nd3+ Bxd3 Bxd3 Rd1 Bxb5 
43   -1.19   17:33   9550M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 Qxa5 Bxa5 Rf4 Bb7 Nb3 Bc7 Nc3 Kxg7 Rdf1 Kg8 Kb1 Rf8 h5 Nc6 Ra4 Rfc8 Ne4 Ne7 Nf6+ Nxf6 gxf6 Nf5 Bd2 Kh8 Bd3 Ng3 Re1 Rg8 Ba5 Bxa5 Nxa5 Bd5 h6 Nf5 Bxf5 
44   -0.92   22:28  12215M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 a3 Qxb4 axb4 Kxg7 h5 Be7 b3 d5 c3 Rec8 Kb2 Kg8 Rf4 Bf8 Rf2 Bg7 Bf4 Ra7 Rff1 Bf8 Be3 Raa8 Rfe1 Bd6 Bf2 Be7 Bg3 Ra7 Bf4 Bf8 Rf1 Be7 Rg1 Bf8 Rg3 Bg7 Rh3 Bg2 Rh2 Be4 b5 axb5 Bxb5 
45   -1.31   34:10  18595M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Rb8 Qd2 Qb7 Nb3 Be7 Bd4 Nf3 Qe3 Nde5 Nc3 Nxd4 Rxd4 Bg2 Rf2 Bc6 Kb1 Kxg7 Ne4 Bxe4 Rxe4 Kg8 Ref4 Rf8 Qg3 Ng6 Ra4 e5 a3 Qc6 Rc4 Qd5 Qg4 Qe6 Rc7 Rfc8 Rxc8+ Rxc8 h5 Nf4 Qxe6 fxe6 Bxa6 
46   -1.31   39:23  21414M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 a3 Qxb4 axb4 Be7 b3 Kxg7 Kb2 Reb8 c3 Rg8 h5 Kh8 Rg1 Raf8 c4 Rb8 Bd2 Bb7 Rg3 Ba8 Rf1 Bf6 Ka3 Be7 Rgg1 Rbc8 Kb2 Rb8 Ka2 Bb7 Bf4 Ba8 Ka3 Kg7 Bd2 Be4 Kb2 Rgc8 Bc3 Kg8 Rg3 d5 cxd5 exd5 
47   -1.37   44:59  24424M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 a3 Qxb4 axb4 Be7 b3 Kxg7 Kb2 Reb8 c3 Rg8 h5 Kh8 Rg1 Raf8 Ka3 Bb7 Rg3 Rc8 Bf4 Rb8 Rf1 Rbe8 Rfg1 Rb8 Be3 Kg7 Rf1 Rge8 Kb2 Kg8 Bd2 Rec8 Bf4 Rf8 c4 Ba8 b5 axb5 Nxb5 Bc6 
48   -1.08   57:41  31180M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qb7 Qxb7 Bxb7 b3 Be7 c4 Rec8 Nc2 Kxg7 Kb2 Bc6 Nc3 Bg2 Rf2 Bb7 Rg1 Kh8 Rff1 Rg8 Nd4 h6 g6 fxg6 Nxe6 Kh7 h5 gxh5 Bxh5 Rg2+ Rxg2 Bxg2 Rg1 Rg8 Be2 Bh3 Rxg8 Kxg8 Nc7 Bg5 Bxg5 hxg5 Nxa6 
49   -1.37 1:28:43  46970M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 a3 Qxb4 axb4 Kxg7 b3 Be7 Kb2 Reb8 c3 Rg8 h5 Kh8 Rg1 Bb7 Rg3 Raf8 Rdg1 Rb8 Bf4 Rgc8 Bd2 Rg8 Be3 Kg7 Rf1 Rgc8 Rd1 Kg8 Rdg1 Kg7 Rf1 Rg8 Kc1 Rbf8 c4 Kh8 Rfg1 Rc8 Kb2 Be4 Bf4 h6 Nc3 hxg5 Bxe5+ dxe5 Nxe6 
50   -1.37 1:31:44  48496M  Bd8 fxg7 Re8 Na4 Nce5 Rhf1 Bb7 Qxb4 Bxe4 h4 Qa5 a3 Qxb4 axb4 Kxg7 b3 Be7 Kb2 Reb8 c3 Rg8 h5 Kh8 Rg1 Bb7 Rg3 Raf8 Rdg1 Rb8 Ka3 Kg7 Rf1 Kh8 Bf4 Kg7 Kb2 Kh8 Bd2 Rbf8 Rfg1 Rb8 Be3 Rg7 Bf4 Rgg8 Ka3 Rg7 Rf1 Rgg8 Rd1 Rgc8 c4 Ba8 Nc3 d5 cxd5 Rxb4 Kb2 Bxd5 
Nodes: 48496367364
Nodes/second: 8810461
Best move: Bd8
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

zullil
Posts: 5552
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: refuted opening lines

Post by zullil » Wed Jul 31, 2019 8:59 pm

Dann Corbit wrote:
Wed Jul 31, 2019 8:16 pm
zullil wrote:
Wed Jul 31, 2019 12:00 pm

This one needs review for sure.



Cfish-dev:
+1.18 1... Bd8 2. fxg7 Re8 3. Na4 Nce5 4. Rhf1 Bb7 5. Qxb4 Bxe4 6. h4 Qa5 7. a3 Qxb4 8. axb4 Kxg7 9. h5 Be7 10. b3 d5 11. c3 Rec8 12. Kb2 Bd6 13. Bf4 Kg8 14. Rd2 Bc7 15. Bg3 Kg7 16. Rdd1 Kg8 17. Ka2 Bb8 18. Bf4 Bd6 19. Kb2 Bc7 20. Be3 Bd6 21. Rf2 Be7 22. Bf4 Bd6 23. Rd2 Bc7 24. Bh2 Bd8 25. Rd1 Bc7 26. Nc5 Nxc5 27. bxc5 Nd7 28. c6 Nb8 29. Bxc7 Rxc7 30. Rdf1 Nxc6 31. Nxc6 Rxc6 (depth 54, 1:14:58)

Lc0:
+1.10 1... Bd8 2. Nb1 Bb7 3. fxg7 Kxg7 4. Nxc6 Qxc6 5. Qxb4 Qxe4 6. Qd2 Ba5 7. c3 Ne5 8. Rhf1 Kg8 9. b3 Bc7 10. Kb2 Qh4 11. Rf2 Qh3 12. Bd4 Be4 13. c4 Rab8 14. Nc3 Bf5 15. Qf4 Rfd8 16. Rff1 Ng6 17. Qg3 Qxg3 18. hxg3 Ne5 19. Rf4 Bg6 20. Rh4 Rdc8 21. Ne4 Bxe4 22. Rxe4 a5 (depth 27, 0:11:25)
I assume that those scores must be from the standpoint of white?
Yes, the position favors White, by a bit more than a pawn.

mmt
Posts: 8
Joined: Sun Aug 25, 2019 6:33 am
Full name: Jim Fields

Re: refuted opening lines

Post by mmt » Tue Sep 10, 2019 7:24 am

After over a billion nodes with LC0:
-1.01 Bd8 Nb1 Bb7 fxg7 Kxg7 Nxc6 Qxc6 Qxb4 Qxe4 Qd2 Ba5 c3 Bc7 Bd3 Qg2 Rhf1 Ne5 Rf2 Qg4 Rf4 Qh5 Rg1 Ng6 Rf2 e5 Bf5 Bc8 Qd3 Be6 Nd2 d5 Nb3 Kg8 Nc5 e4 Qf1 Bxf5 Rxf5 Rad8 Kb1 Be5 Nb3 Rd7 Nd4 Re8 a3 Rb7 h4 Qxh4 Ka1 a5 Rh1 Qg3 Rh3 Qg4 Rf2 Qc8 Nf5 Rf8 Rh1 f6 Qh3 fxg5 Bxg5 Kh8 Be7 Rf7 Nd6 Qxh3 Nxf7+ Kg8 Rxh3 Rxe7 Nh6+ Kh8 Rf1 Nf4 Rhh1 Bb8 Rfg1 Rg7 a4 Ba7 Rf1 Bb8 Rhg1 Be5 Kb1 e3 Rxg7 Bxg7 Nf5 e2 Re1 Bf6 Kc2 h5 Kd2 Kh7 Rg1 h4 Nd4 Bxd4 cxd4 h3 b4 axb4 a5 b3 a6 h2 Rh1 b2 a7 Kg7 (N: 1384M, P: 12.69%, V: -0.516, Q: -0.344)

Dann Corbit
Posts: 9894
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: refuted opening lines

Post by Dann Corbit » Tue Sep 10, 2019 8:08 pm

Uri Blass wrote:
Wed Jul 31, 2019 3:10 pm
For the positions of dann corbit I wonder what is the pgn that he used because I can find in chesstempo database more common positions
than the positions at the top of the positions that he posted when I cannot see 50 games in chesstempo in many of the positions that he posted.
My database contains:
GM correspondence player games.
SuperGM (2700+) OTB games, with blitz, blindfold, simuls and that sort of thing removed
High Elo engines at slow time control (e.g. CCRL 40/40 or slower time control, with Elo of 2700 or better)

The intention is to have high quality statistics. I have found, however, that there is some bad data in my database (e.g. a position that is lost by the statistics but always won by the computer analysis and vice versa).
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

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