Testposition from Mark's match

[Eelco de Groot]

Latest game from Mark's match (or quad? what is the correct translation of "vierkamp"? Google is clueless It apparently never heard of the word, talks about "four athletes" only or gives random advertisements as a translation.):

[pgn][Event "*"]
[Site "*"]
[Date "2023.02.05"]
[Time "10:45:06"]
[Round "1"]
[Board "210"]
[White "Berserk 10 "]
[Black "Lc0 v0.29.0 Net 809106"]
[Result "0-1"]
[Termination "mate"]
[ECO "C50"]
[Opening "Giuoco Pianissimo"]
[TimeControl "60+1"]
[PlyCount "126"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Bc5 5.c3 {C50: Giuoco Pianissimo} d6 6.O-O Bb6 {End of opening} 7.Bg5 {+0.7/31 74025 1823532748} h6 {+0.0/15 26129 310595 289/420/291} 8.Bh4 {+0.6/29 8485 218547403} g5 {+0.0/16 9372 346289 295/393/312} 9.Bg3 {+0.8/26 17786 469390992} Ne7 {+0.0/16 13238 470032 295/394/311} 10.a4 {+0.6/27 8735 222648283} c6 {+0.0/15 35673 684616 273/424/303} 11.Na3 {+0.5/28 31730 822949917} Ng6 {+0.1/12 13035 169615 258/446/296} 12.Ba2 {+0.4/26 12929 339225432} Bc7 {+0.1/14 22478 413694 251/443/306} 13.Nc2 {+0.5/27 8315 215647910} O-O {+0.1/12 8581 230882 242/478/280} 14.Ne3 {+0.6/27 20568 547262161} Kg7 {+0.1/11 12553 230858 243/475/282} 15.b4 {+0.4/29 36932 979540794} d5 {+0.0/14 16916 148275 271/465/264} 16.Qc2 {+0.2/27 7443 195043780} Nh5 {-0.0/14 5120 117616 270/473/257} 17.Rae1 {+0.7/24 6005 153421056} Nhf4 {-0.0/16 7604 145199 250/519/231} 18.exd5 {+0.5/28 13453 341469455} cxd5 {-0.0/23 14605 123456 262/484/254} 19.d4 {+0.3/31 19228 498301628} e4 {-0.0/19 13235 123440 281/459/260} 20.Nd2 {+0.2/31 14634 386857625} f5 {+0.0/18 10457 222855 269/468/263} 21.f3 {+0.4/29 5310 140310916} Bd6 {-0.0/17 23531 425518 240/531/229} 22.b5 {+0.3/27 8680 223628742} Bb8 {+0.0/18 13923 257916 279/442/279} 23.Bxf4 {+0.3/31 48376 1262519267} gxf4 {-0.1/19 7817 136290 298/444/258} 24.Nxd5 {+0.2/28 5499 152137078} e3 {-0.1/18 6179 201000 298/448/254} 25.Nb1 {+0.2/26 4991 137892627} Be6 {-0.1/17 7386 274781 299/453/248} 26.Nb4 {+0.3/26 4724 133069300} Bxa2 {-0.1/16 8135 362176 295/459/246} 27.Nxa2 {+0.2/28 11498 320958173} Kh7 {-0.1/13 33868 976357 333/412/255} 28.Re2 {+0.6/25 6935 192619088} Nh4 {-0.1/13 8523 359790 333/410/257} 29.Na3 {-0.0/38 76887 2151058031} Rg8 {-0.1/14 12256 281952 352/406/242} 30.Nc1 {+0.0/35 9049 248959177} Qe7 {-0.1/15 13617 345341 354/401/245} 31.Nc4 {+0.0/33 4245 114182519} Bc7 {-0.5/16 14515 176019 453/401/146} 32.Nb2 {+0.2/28 8407 232385949} Rg5 {-0.8/14 13980 227383 605/257/138} 33.Nbd3 {-3.4/31 41186 1081677614} Rag8 {-0.8/14 6575 300931 615/252/133} 34.Ne1 {-3.6/25 3708 94565754} Rh5 {-0.9/12 2138 313125 619/251/130} 35.Ned3 {-3.9/31 21265 552889342} Ng6 {-3.0/14 21133 237537 861/100/39} 36.Nf2 {-3.9/26 2414 59773336} Qg5 {-4.1/14 37069 520365 898/70/32} 37.Ncd3 {-6.1/24 23647 465239355} Ne7 {-4.3/15 225 124880 902/68/30} 38.Ng4 {-6.8/23 3687 93971264} Qh4 {-4.8/15 6091 157385 914/58/28} 39.h3 {-6.8/20 1560 40057345} Kh8 {-8.2/12 14743 166538 951/33/16} 40.Qd1 {-7.7/26 13238 304068980} fxg4 {-9.7/15 14467 121739 961/23/16} 41.fxg4 {-7.7/20 1016 25123041} Rxg4 {-11.2/16 6570 161502 966/21/13} 42.Rf3 {-12.1/22 10038 234754243} Rg3 {-20.5/10 21911 207637 983/11/6} 43.Rxg3 {-13.1/22 3730 88670961} Qxg3 {-24.1/9 9892 104597 986/8/6} 44.Qe1 {-13.8/21 3739 91413617} Qg5 {-31.4/8 22189 276948 990/6/4} 45.Nf2 {-12.9/22 8161 181929643} Nf5 {-39.1/7 13968 146739 992/6/2} 46.Ng4 {-8.6/17 635 12958821} Rh4 {-29.3/7 10187 119532 988/9/3} 47.Qf1 {-12.1/22 9068 200832717} Rxg4 {-25.2/8 12494 124162 986/9/5} 48.hxg4 {-17.2/21 6004 138923394} Ng3 {-29.0/9 4243 59740 988/8/4} 49.Rxe3 {-18.3/18 1320 30698500} Nxf1 {-57.9/8 7030 103921 996/3/1} 50.Re8+ {-18.7/19 3277 78383299} Kg7 {-50.3/7 13910 203656 995/3/2} 51.Kxf1 {-22.9/21 9311 201675272} Ba5 {-47.7/6 14335 225544 995/3/2} 52.c4 {-17.1/18 4339 101080657} Qg6 {-62.0/6 8488 86913 996/3/1} 53.Re2 {-24.4/18 6570 127729968} Bc3 {-68.1/6 8347 97454 997/2/1} 54.Re7+ {-27.7/18 5402 137312612} Kf6 {-63.5/6 7786 79087 997/2/1} 55.Re2 {M-7/36 3981 107664709} Qd3 {-49.3/6 8221 93384 995/3/2} 56.Kf2 {-33.0/15 1981 56561659} Kg5 {-40.0/6 7283 83698 990/10/0} 57.Re8 {M-7/36 3506 99961830} Kh4 {-43.2/6 7440 78841 991/9/0} 58.g3+ {-35.9/16 1372 42396462} Kh3 {M+6/6 1049 10022 1000/0/0} 59.gxf4 {M-5/69 11969 180625054} Bxd4+ {M+5/1 10 1920 1000/0/0} 60.Ke1 {M-4/73 6747 2707920} Kg3 {M+4/1 10 582 1000/0/0} 61.Re2 {M-3/78 5435 1696453} Bc3+ {M+3/1 10 41 1000/0/0} 62.Kf1 {M-2/127 38 785312} Qd1+ {M+2/1 10 4 1000/0/0} 63.Re1 {M-1/127 25 94508} Qxe1# {M+1/1 10 2 1000/0/0} 0-1
[/pgn]

Maybe white does not have anything anymore already, but old, well not really very old, Blue Marlin, just as a random example for an engine, sees only zeroes here at move 31 (diagram). Berserk sees nothing in the game. But it appears White is lost pretty much, at least after text 31. Nc4


[fen]rb4r1/pp2q2k/7p/1P3p2/P2P1p1n/N1P1pP2/2Q1R1PP/2N2RK1 w - -[/fen]


LcO is already winning, like Morphy, but does your computer see it quickly?

Blue Marlin 14.9a initially at least, sees only zeroes here in the White to move position...

But after Nc4:


[fen]rb4r1/pp2q2k/7p/1P3p2/P1NP1p1n/2P1pP2/2Q1R1PP/2N2RK1 b - -[/fen]


Engine: Blue Marlin 14.9a (512 MB)
gemaakt door dorsz and the Stockfish developers (see

41 14:05 -1.68 31...Lc7 32.a5 Tg5 33.b6 axb6
34.axb6 Ld6 35.Pxd6 Dxd6 36.Pd3 Tag8
37.Pe1 Dxb6 38.Db2 Da6 39.Tc2 Tc8
40.Db3 Tg7 41.c4 Da1 42.d5 Tcg8
43.Dd3 Tg6 44.Kh1 Tb6 (763.434.363) 902

41 14:05 -1.35 31...Tg5 32.b6 axb6 33.Pxb6 Ta6
34.a5 Txa5 35.c4 Dg7 36.Kh1 Dxd4
37.Pd5 Ta1 38.Td1 Dg7 39.c5 Le5
40.Pb4 Dc7 41.Pbd3 Tg7 42.Tg1 Ta8
43.Dc4 Td8 44.Tee1 Pg6 (763.434.363) 902

41 14:05 -0.99 31...Tg7 32.Pd3 Lc7 33.Kh1 Tag8
34.Pe1 Tg5 35.Pxe3 Te8 36.g3 fxg3
37.f4 Tg6 38.Pf3 g2+ 39.Txg2 Pxg2
40.Pxg2 De4 41.Dxe4 Txe4 42.Pfh4 Tg4
43.Pxf5 Te2 44.Pg3 Ta2 (763.434.363) 902

[Ajedrecista]

Hello Eelco:

[...]

Maybe white does not have anything anymore already, but old, well not really very old, Blue Marlin, just as a random example for an engine, sees only zeroes here at move 31 (diagram). Berserk sees nothing in the game. But it appears White is lost pretty much, at least after text 31. Nc4


[fen]rb4r1/pp2q2k/7p/1P3p2/P2P1p1n/N1P1pP2/2Q1R1PP/2N2RK1 w - -[/fen]


LcO is already winning, like Morphy, but does your computer see it quickly?

[...]

SF 15.1 took time to realise that the position might not have any single 0.00 move:

Code: Select all

FEN: rb4r1/pp2q2k/7p/1P3p2/P2P1p1n/N1P1pP2/2Q1R1PP/2N2RK1 w - - 7 31

Stockfish_15.1-x64-modern:
[...]
---------------------------------------------------------------------------
 33/49	03:34	 282.392.247	1.318.745	-0,63	Qc2a2 Bb8c7 Kg1h1 Rg8g5 Na3c2 Ra8g8 Nc2e1 Rg5h5 Nc1d3 Qe7g5 Nd3b4 Nh4g6 Nb4d5 Rg8g7 h2h3 Ng6h4 Kh1g1 Bc7b8 b5b6 a7xb6 Qa2c4 Qg5d8 Re2b2 Rh5g5 Kg1h1 Bb8d6 Rf1g1 Rg5g3 Rb2xb6 Qd8g5 Qc4f1 Nh4xg2 Rg1xg2 Rg3xh3+ Kh1g1 Qg5h4 Rg2xg7+ Kh7xg7 Qf1g2+ Kg7h8
 33/45	03:34	 282.392.247	1.318.745	-0,52	Na3c4 Bb8c7 a4a5 Qe7f7 Nc4b2 Rg8g7 Nb2d3 Ra8g8 Nd3e1 Bc7xa5 Nc1b3 Ba5b6 c3c4 a7a5 b5xa6/ep b7xa6 Kg1h1 Rg8c8 c4c5 Bb6c7 Qc2d3 Qf7d5 Re2c2 Rc8d8 Qd3c4 Rg7g8 Rf1g1 Nh4g6 Qc4xd5 Rd8xd5 Rc2c4 Rg8b8 Nb3c1 Ng6e7 Nc1e2
 33/41	03:34	 282.392.247	1.318.745	 0,00	Qc2b3 Bb8d6 Na3c2 Nh4xg2 Re2xg2 Rg8xg2+ Kg1xg2 Ra8g8+ Kg2h1 e3e2 Rf1g1 Rg8xg1+ Kh1xg1 e2e1Q+ Nc2xe1 Qe7xe1+ Kg1g2 Qe1d2+ Kg2h3 Kh7g7 Qb3e6 Qd2xc1 Qe6d7+ Kg7g6 Qd7xd6+ Kg6h5 Kh3g2 Qc1b2+ Kg2g1 Qb2b1+ Kg1f2 Qb1c2+ Kf2g1
---------------------------------------------------------------------------
 34/56	06:43	 524.961.195	1.301.435	-1,26	Qc2b2 Bb8c7 b5b6 a7xb6 Na3b5 Rg8g6 Nb5xc7 Qe7xc7 Nc1d3 Ra8g8 Nd3e1 Qc7c4 Re2c2 Qc4xa4 Kg1h1 Qa4c4 Rf1g1 b6b5 Qb2b1 Rg8g7 Rc2b2 Qc4xc3 Rb2xb5 Qc3xd4 Rb5b4 Qd4d6 Rb4xb7 Rg7xb7 Qb1xb7+ Rg6g7 Qb7b5 Qd6e6 g2g3 Nh4g6 Ne1g2 f4xg3 h2xg3 f5f4 g3g4 Rg7d7 Rg1e1 Qe6f7 Qb5f5 Kh7g7 Qf5c2
 34/45	06:43	 524.961.195	1.301.435	-0,62	Na3c4 Bb8c7 a4a5 Qe7f7 Nc4b2 Rg8g5 Nb2d3 Ra8g8 Nd3e1 Bc7xa5 Nc1b3 Ba5b6 c3c4 Rg5h5 c4c5 Bb6c7 Kg1h1 Nh4g6 Qc2a2 Qf7e7 h2h3 Qe7h4 c5c6 b7xc6 Nb3c5 c6xb5 Qa2xa7
 34/49	06:43	 524.961.195	1.301.435	-0,45	Qc2a2 Bb8c7 Kg1h1 Rg8g5 Na3c2 Ra8g8 Nc2e1 Rg5h5 Nc1d3 Qe7g5 Nd3b4 Nh4g6 Nb4d5 Rg8g7 h2h3 Ng6h4 Kh1g1 Qg5d8 a4a5 Bc7b8 b5b6 a7a6 c3c4 Kh7h8 Qa2a3 Rh5g5 Kg1h1 Rg5g3 Nd5c7 Bb8xc7 b6xc7 Rg7xc7 Qa3b2 Kh8h7 Qb2b6 Rg3g7 d4d5
---------------------------------------------------------------------------
 35/53	09:39	 747.180.896	1.290.175	-1,48	Qc2b2 Bb8c7 b5b6 a7xb6 Na3b5 Rg8g7 Nb5xc7 Qe7xc7 Nc1d3 Ra8g8 Nd3e1 Qc7c4 Re2c2 Qc4xa4 Kg1h1 Qa4c4 Rf1g1 b6b5 Rc2c1 Rg8c8 Rc1d1 Nh4g6 Ne1d3 Qc4xc3 Qb2xb5 Qc3xd4 Qb5xf5 Rc8d8 Nd3b2 Qd4b6 Rd1xd8 Qb6xd8 h2h3 Qd8g5 Qf5c2 b7b5 Rg1d1 Qg5e5 Nb2d3 Qe5f5
 35/45	09:39	 747.180.896	1.290.175	-1,00	Qc2a2 Bb8c7 Na3c2 Rg8g5 Kg1h1 Ra8g8 Nc2e1 Rg5h5 Nc1d3 Qe7g5 b5b6 a7xb6 Nd3b4 Rg8g7 Nb4d5 Nh4g6 h2h3 Ng6h4 Kh1g1 Qg5d8 Qa2c4 Rg7d7 Nd5b4 Rh5g5 Kg1h1 Rg5g3 Rf1g1 Rd7g7 Re2b2 Kh7h8 Rb2c2 Qd8g5 Qc4f1 Qg5h5 Qf1b5
 35/52	09:39	 747.180.896	1.290.175	-0,67	Na3c4 Bb8c7 a4a5 Qe7f7 Qc2a2 Rg8g7 Nc1d3 Ra8g8 Nd3e1 Bc7b8 Nc4a3 Qf7c7 Qa2b3 Qc7xa5 Na3c2 a7a6 b5xa6 Qa5xa6 c3c4 Bb8a7 Kg1h1 Qa6f6 d4d5 Ba7c5 Rf1g1 b7b6 Nc2b4 Rg8a8 Nb4d3 Ra8a3 Qb3b2 Qf6xb2 Re2xb2
---------------------------------------------------------------------------
 36/55	13:38	1.042.654.806	1.273.877	-1,59	Qc2b2 Bb8c7 b5b6 a7xb6 Na3b5 Rg8g7 Nb5xc7 Qe7xc7 Nc1d3 Ra8g8 Nd3e1 Qc7c4 Qb2c2 Kh7h8 Qc2b2 Qc4xa4 Kg1h1 Qa4c4 Rf1g1 b6b5 Re2c2 Rg8d8 Rc2c1 Kh8h7 Rc1d1 Rd8a8 Rd1b1 Ra8c8 Rb1d1 Nh4g6 h2h3 Rc8c6 Ne1d3 Qc4xc3 Qb2xb5 Qc3c4 Rd1b1 Qc4xd4 Rb1b4
 36/55	13:38	1.042.654.806	1.273.877	-1,20	Qc2a2 Bb8c7 b5b6 a7xb6 Qa2c4 Bc7d6 Na3c2 Ra8c8 Qc4d3 Qe7c7 Nc1a2 Qc7f7 Qd3b5 Rc8c6 Nc2e1 Rg8a8 Ne1d3 Ra8a5 Qb5b1 Ra5xa4 Kg1h1 Ra4a3 Re2b2 Qf7c4 Rf1g1 b6b5 Nd3c1 Rc6b6 Nc1d3 Rb6a6 Na2c1
 36/48	13:38	1.042.654.806	1.273.877	-0,57	Na3c4 Bb8c7 a4a5 Qe7f7 Qc2a2 Rg8g7 Nc1d3 Ra8g8 Nd3e1 Bc7b8 Nc4a3 Qf7c7 Qa2b3 Qc7xa5 Na3c2 a7a6 b5xa6 Qa5xa6 c3c4 Bb8a7 Qb3d3 Qa6f6 c4c5 b7b6 Qd3c4 b6xc5 d4xc5 Qf6e5 Ne1d3 Rg7xg2+ Re2xg2 Rg8xg2+ Kg1h1 Qe5g7 Nc2xe3 f4xe3 Qc4xh4 e3e2 Rf1e1 Ba7b8 Nd3f4 Bb8xf4

------------

This game followed a game from 1994 until 9.- ..., Ne7:

https://lichess.org/70XaqySF

Regards from Spain.

Ajedrecista.

[Eelco de Groot]

Thanks Ajedrecista!

Is it not a bit sobering to see such evaluations though. I mean it is 2023. And if I had this on the chessboard playing White I do think I would resign if it was not an important match in team competition. Even Deep Blue might have a better evaluation than Stockfish! (Just by depth maybe, but we will never know) And Deep Blue really sucked bigtime. Not my words, that was Vincent D.

[jorose]

Winter Dev prefers black at all depths and never sees equality for white.

This doesn't mean Winter's eval is better or even competitive with SFs evaluation. SFs static evaluation is also that black is better, but chess is a concrete game, and SF is not reporting the eval from the current position, but some position deep in its search.