Stockfish 16CPU v Komodo Dragon 16CPU (LTC Gambits Match)

[Graham Banks]

GAME 76

Whereas Komodo Dragon had played 3...a6, Stockfish played 3...Nc6, and although a6 was played on the next move, the game was already taking on a different complexion, with Komodo Dragon eventually castling kingside, and Stockfish castling queenside.
Komodo Dragon was first to create action, opening up the c-file to exert pressure with both rooks, then saccing the exchange to gain control of the h1-a8 diagonal.
But as usual, Stockfish had the situation covered, and when the queenside became locked up, there was nothing further that either side could achieve.
The game concluded with a threefold repetition.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.23"]
[Round "38.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "12:30:23 am"]
[ECO "C00"]
[Opening "Papa-Ticulat Gambit, French"]
[TimeControl "7200+30"]
[PlyCount "101"]
[Number "76"]
[Termination "3-fold rep"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.e4 {[%eval 0,1] [%emt 00:00:00]} e6 {[%eval 0,1] [%emt 00:00:00]}
2.b3 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
3.Bb2 {[%eval 0,1] [%emt 00:00:00]} Nc6 {[%eval 24,49] [%emt 00:10:44]}
4.e5 {(exd5) [%eval -34,37] [%emt 00:03:12]} d4 {(d4) [%eval 39,42] [%emt 00:01:01]}
5.Nf3 {(Nf3) [%eval -41,38] [%emt 00:05:00]} a6 {(a6) [%eval 14,51] [%emt 00:07:48]}
6.Na3 {(Bd3) [%eval -17,39] [%emt 00:05:31]} Nge7 {(b6) [%eval 25,44] [%emt 00:01:52]}
7.Qe2 {(Qe2) [%eval -10,40] [%emt 00:02:15]} Nd5 {(b6) [%eval 51,44] [%emt 00:02:02]}
8.g3 {(g3) [%eval -33,41] [%emt 00:05:02]} b6 {(b6) [%eval 41,45] [%emt 00:01:45]}
9.Bg2 {(Rc1) [%eval -29,42] [%emt 00:03:16]} Bb7 {(Bb7) [%eval 51,44] [%emt 00:01:50]}
10.O-O {(Nb1) [%eval -36,38] [%emt 00:04:32]} Qd7 {(Qd7) [%eval 38,42] [%emt 00:02:37]}
11.d3 {(d3) [%eval -24,38] [%emt 00:02:07]} Bxa3 {(Nc3) [%eval 51,44] [%emt 00:02:04]}
12.Bxa3 {(Bxa3) [%eval -26,39] [%emt 00:02:38]} O-O-O {(O-O-O) [%eval 47,44] [%emt 00:02:14]}
13.Bb2 {(Bb2) [%eval -28,41] [%emt 00:02:21]} Nde7 {(Nde7) [%eval 44,42] [%emt 00:02:32]}
14.Rfe1 {(a3) [%eval -36,42] [%emt 00:13:40]} Kb8 {(Kb8) [%eval 48,45] [%emt 00:12:09]}
15.a3 {(h4) [%eval -24,40] [%emt 00:04:23]} Rhg8 {(Rhg8) [%eval 40,46] [%emt 00:06:48]}
16.h4 {(h4) [%eval -29,38] [%emt 00:02:02]} h6 {(Qc8) [%eval 40,46] [%emt 00:12:40]}
17.b4 {(b4) [%eval -42,33] [%emt 00:02:03]} Nf5 {(Rde8) [%eval 46,45] [%emt 00:01:24]}
18.Nd2 {(Nd2) [%eval -34,38] [%emt 00:14:11]} Nfe7 {(Rde8) [%eval 26,46] [%emt 00:07:50]}
19.Nf3 {(Qg4) [%eval -39,37] [%emt 00:02:28]} Nf5 {(Rde8) [%eval 27,49] [%emt 00:10:30]}
20.Bc1 {(Qd2) [%eval -38,40] [%emt 00:01:45]} Rdf8 {(Rdf8) [%eval 30,44] [%emt 00:00:57]}
21.Bd2 {(Bd2) [%eval -18,40] [%emt 00:03:44]} Nd8 {(Nd8) [%eval 35,48] [%emt 00:01:42]}
22.Rec1 {(Rac1) [%eval -26,40] [%emt 00:01:56]} Ne7 {(Ne7) [%eval 23,47] [%emt 00:01:34]}
23.c3 {(b5) [%eval -31,43] [%emt 00:03:41]} dxc3 {(dxc3) [%eval 48,52] [%emt 00:01:19]}
24.Rxc3 {(Rxc3) [%eval -22,42] [%emt 00:01:35]} Ndc6 {(Ndc6) [%eval 49,47] [%emt 00:01:48]}
25.Rac1 {(Rac1) [%eval -28,44] [%emt 00:01:28]} Rc8 {(Rc8) [%eval 24,47] [%emt 00:02:11]}
26.Rc4 {(Qd1) [%eval -32,43] [%emt 00:04:07]} Rgd8 {(Rgd8) [%eval 41,47] [%emt 00:01:44]}
27.d4 {(d4) [%eval -32,44] [%emt 00:02:38]} Nf5 {(Nf5) [%eval 30,53] [%emt 00:01:26]}
28.Bc3 {(Bc3) [%eval -15,40] [%emt 00:01:57]} Na7 {(g5) [%eval 29,57] [%emt 00:02:21]}
29.Bb2 {(Bb2) [%eval 0,39] [%emt 00:01:02]} Bd5 {(Bd5) [%eval 40,51] [%emt 00:01:26]}
30.Kh2 {(Nd2) [%eval -4,40] [%emt 00:02:03]} Qb5 {(Qb5) [%eval 14,48] [%emt 00:02:31]}
31.Ng1 {(Ng1) [%eval -21,39] [%emt 00:01:49]} Bxc4 {(Bxc4) [%eval 22,50] [%emt 00:03:58]}
32.Rxc4 {(Rxc4) [%eval -25,41] [%emt 00:01:12]} g5 {(g5) [%eval 11,49] [%emt 00:01:20]}
33.h5 {(h5) [%eval -22,39] [%emt 00:01:10]} Ne7 {(Ne7) [%eval 17,45] [%emt 00:01:24]}
34.Qc2 {(Qc2) [%eval -11,40] [%emt 00:03:04]} Nd5 {(Nd5) [%eval 17,48] [%emt 00:01:16]}
35.Nf3 {(a4) [%eval -17,42] [%emt 00:02:56]} g4 {(g4) [%eval 15,49] [%emt 00:01:22]}
36.a4 {(a4) [%eval -13,38] [%emt 00:01:00]} Qe8 {(Qe8) [%eval 28,48] [%emt 00:01:15]}
37.Nh4 {(Nh4) [%eval -7,37] [%emt 00:01:06]} Qh8 {(c6) [%eval 25,48] [%emt 00:02:00]}
38.Bc1 {(Bc1) [%eval -5,39] [%emt 00:02:40]} c6 {(c6) [%eval 22,47] [%emt 00:03:44]}
39.Bd2 {(Bd2) [%eval -23,37] [%emt 00:01:38]} Rd7 {(Kb7) [%eval 0,54] [%emt 00:05:13]}
40.Qe4 {(Qe4) [%eval 0,43] [%emt 00:02:16]} Qg8 {(Qg7) [%eval 0,47] [%emt 00:01:49]}
41.Bf1 {(Bf1) [%eval 0,41] [%emt 00:01:09]} b5 {(b5) [%eval 0,54] [%emt 00:01:56]}
42.Rc5 {(Rc5) [%eval 0,44] [%emt 00:01:08]} Kb7 {(Kb7) [%eval 0,52] [%emt 00:02:01]}
43.a5 {(a5) [%eval 0,47] [%emt 00:01:22]} Rcd8 {(Rcd8) [%eval 0,51] [%emt 00:00:51]}
44.Be2 {(Be2) [%eval 0,43] [%emt 00:01:28]} Ka8 {(Ka8) [%eval 0,52] [%emt 00:00:57]}
45.Bf1 {(Qb1) [%eval 0,47] [%emt 00:01:40]} Kb7 {(Nc7) [%eval 0,50] [%emt 00:01:17]}
46.Be2 {(Be2) [%eval 0,45] [%emt 00:01:02]} Qg7 {(Ka8) [%eval 0,55] [%emt 00:00:32]}
47.Kg1 {(Ng2) [%eval 0,46] [%emt 00:01:12]} Nc7 {(Ne7) [%eval 0,52] [%emt 00:01:12]}
48.Be3 {(Be3) [%eval 0,52] [%emt 00:01:18]} Nd5 {(Nd5) [%eval 0,51] [%emt 00:00:18]}
49.Bd2 {(Bd2) [%eval 0,53] [%emt 00:01:35]} Ne7 {(Ne7) [%eval 0,53] [%emt 00:00:49]}
50.Be3 {(Be3) [%eval 0,56] [%emt 00:00:57]} Nd5 {(Nd5) [%eval 0,62] [%emt 00:00:36]}
51.Bd2 {(Bd2) [%eval 0,58] [%emt 00:00:45]}
1/2-1/2[/pgn]

[Graham Banks]

French Defense - Korchnoi Gambit

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ngf3!? *

The line is filled with tactical opportunities.
White offers a pawn to divert the black e-pawn. If Black accepts the gambit, White has two main plans. The first is to play d4 and Bxf4, regaining the gambit pawn with central domination. The alternative plan is to play Nf3 and Bc4 followed by 0-0, when the semi-open f-file created after a pawn push to g3 allows White to attack the weakest point in Black's position, the pawn on f7. Theory has shown that, in order to maintain the gambit pawn, Black may well be forced to weaken the kingside with moves such as ...g5 or odd piece placement (e.g. ...Nf6–h5). A downside to the King's Gambit is that it weakens White's king's position, exposing it to the latent threat of ...Qh4+ (or ...Be7–h4+). With a black pawn on f4, White cannot usually respond to the check with g3, but if the king is forced to move then it also loses the right to castle.

[Graham Banks]

GAME 77

Komodo Dragon eventually accepted the gambit pawn, prompting Stockfish to eye up the black kingside.
After its light squared bishop was traded, Stockfish decided that there was nothing to be gained on the kingside, so traded queens to take control of the open d-file.
However, the remaining black bishop blocked everything off nicely by going to d5, and with neither engine being able to find a way to make progress, pieces were just shuffled around until ChessGUI draw adjudication settings ended the game.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.23"]
[Round "39.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "5:05:58 am"]
[ECO "C06"]
[Opening "C06"]
[TimeControl "7200+30"]
[PlyCount "122"]
[Number "77"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.e4 {[%eval 0,1] [%emt 00:00:00]} e6 {[%eval 0,1] [%emt 00:00:00]}
2.d4 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
3.Nd2 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
4.e5 {[%eval 0,1] [%emt 00:00:00]} Nfd7 {[%eval 0,1] [%emt 00:00:00]}
5.Bd3 {[%eval 0,1] [%emt 00:00:00]} c5 {[%eval 0,1] [%emt 00:00:00]}
6.c3 {[%eval 0,1] [%emt 00:00:00]} Nc6 {[%eval 0,1] [%emt 00:00:00]}
7.Ngf3 {[%eval 0,1] [%emt 00:00:00]} Qb6 {[%eval 0,1] [%emt 00:00:00]}
8.O-O {[%eval 0,1] [%emt 00:00:00]} cxd4 {[%eval -51,38] [%emt 00:02:11]}
9.cxd4 {(cxd4) [%eval 42,51] [%emt 00:05:37]} a5 {(a5) [%eval -45,39] [%emt 00:03:33]}
10.Re1 {(Re1) [%eval 51,49] [%emt 00:03:59]} Be7 {(Be7) [%eval -50,42] [%emt 00:02:40]}
11.h3 {(h3) [%eval 47,50] [%emt 00:02:06]} a4 {(a4) [%eval -31,43] [%emt 00:04:03]}
12.a3 {(Rb1) [%eval 52,51] [%emt 00:02:05]} Nxd4 {(Nxd4) [%eval -37,39] [%emt 00:03:20]}
13.Nxd4 {(Nxd4) [%eval 39,50] [%emt 00:02:22]} Qxd4 {(Qxd4) [%eval -37,39] [%emt 00:02:05]}
14.Nf3 {(Nf3) [%eval 38,52] [%emt 00:02:30]} Qb6 {(Qb6) [%eval -30,41] [%emt 00:03:18]}
15.Ng5 {(Bg5) [%eval 24,54] [%emt 00:03:36]} Nc5 {(Nc5) [%eval -40,40] [%emt 00:02:32]}
16.Bc2 {(Bc2) [%eval 0,56] [%emt 00:06:09]} Nb3 {(Nb3) [%eval -21,43] [%emt 00:03:00]}
17.Bxb3 {(Bxb3) [%eval 0,64] [%emt 00:02:18]} Qxb3 {(Qxb3) [%eval 0,47] [%emt 00:02:09]}
18.Qh5 {(Qh5) [%eval 0,61] [%emt 00:02:33]} g6 {(g6) [%eval 0,51] [%emt 00:02:27]}
19.Qh6 {(Qh6) [%eval 1,61] [%emt 00:03:20]} Bf8 {(Bf8) [%eval 0,53] [%emt 00:02:58]}
20.Qh4 {(Qh4) [%eval 0,59] [%emt 00:02:34]} Qc4 {(Qc4) [%eval 0,55] [%emt 00:03:15]}
21.Qxc4 {(Qg3) [%eval 0,66] [%emt 00:02:48]} dxc4 {(dxc4) [%eval 0,55] [%emt 00:02:44]}
22.Ne4 {(Ne4) [%eval 0,65] [%emt 00:02:38]} b5 {(Be7) [%eval -1,52] [%emt 00:04:22]}
23.Rd1 {(Rd1) [%eval 12,60] [%emt 00:01:57]} Be7 {(Be7) [%eval -1,56] [%emt 00:03:01]}
24.Nd6 {(Nd6) [%eval 11,62] [%emt 00:02:10]} Bxd6 {(Bxd6) [%eval -7,56] [%emt 00:02:23]}
25.Rxd6 {(Rxd6) [%eval 11,62] [%emt 00:02:06]} Ra6 {(Ra6) [%eval -7,57] [%emt 00:05:15]}
26.Rd4 {(Rd4) [%eval 11,65] [%emt 00:02:10]} Bb7 {(Bb7) [%eval -8,57] [%emt 00:11:11]}
27.Bd2 {(Bd2) [%eval 11,68] [%emt 00:02:11]} Bd5 {(Bd5) [%eval -2,57] [%emt 00:05:22]}
28.Rc1 {(f3) [%eval 11,65] [%emt 00:03:56]} Rg8 {(O-O) [%eval -2,53] [%emt 00:02:15]}
29.f3 {(f3) [%eval 11,56] [%emt 00:02:03]} Kd7 {(Kf8) [%eval -8,51] [%emt 00:01:59]}
30.Kf2 {(Kf2) [%eval 3,54] [%emt 00:02:20]} Raa8 {(Raa8) [%eval -8,55] [%emt 00:01:38]}
31.Kg3 {(Kg3) [%eval 3,62] [%emt 00:02:35]} Kc6 {(Rgd8) [%eval -8,57] [%emt 00:01:50]}
32.h4 {(Bc3) [%eval 11,60] [%emt 00:01:54]} Rgb8 {(Raf8) [%eval -8,51] [%emt 00:01:53]}
33.Rf4 {(Bb4) [%eval 30,51] [%emt 00:03:20]} Ra7 {(Ra7) [%eval -8,56] [%emt 00:07:43]}
34.Bb4 {(Bc3) [%eval 21,55] [%emt 00:04:13]} h5 {(Rg8) [%eval -8,61] [%emt 00:02:30]}
35.Rd4 {(Re1) [%eval 28,67] [%emt 00:01:58]} Rg8 {(Re8) [%eval -8,57] [%emt 00:01:55]}
36.Kf4 {(Kf4) [%eval 28,63] [%emt 00:02:34]} Rb7 {(Rd7) [%eval -8,58] [%emt 00:02:13]}
37.Rdd1 {(Kg5) [%eval 45,67] [%emt 00:08:00]} Rh8 {(Rd7) [%eval -8,60] [%emt 00:01:44]}
38.Rc2 {(Kg5) [%eval 45,67] [%emt 00:02:07]} Rhb8 {(Rg8) [%eval -8,60] [%emt 00:01:45]}
39.Re2 {(Kg5) [%eval 30,57] [%emt 00:07:28]} Rh8 {(Rg8) [%eval -8,56] [%emt 00:01:24]}
40.Bc3 {(Red2) [%eval 29,69] [%emt 00:03:37]} Rg8 {(Rg8) [%eval -8,61] [%emt 00:03:08]}
41.Red2 {(Red2) [%eval 29,61] [%emt 00:01:50]} Rh8 {(Rd7) [%eval -8,61] [%emt 00:02:32]}
42.Re1 {(Bb4) [%eval 29,61] [%emt 00:01:53]} Ra7 {(Rd7) [%eval -8,64] [%emt 00:01:45]}
43.Red1 {(Rc1) [%eval 29,52] [%emt 00:02:43]} Rb7 {(Rb7) [%eval -8,57] [%emt 00:03:44]}
44.Bb4 {(Kg5) [%eval 29,60] [%emt 00:01:22]} Rg8 {(Rd7) [%eval -8,61] [%emt 00:02:24]}
45.Rh1 {(Rd4) [%eval 29,58] [%emt 00:01:33]} Rh8 {(Rd7) [%eval -8,61] [%emt 00:01:15]}
46.Rc1 {(Rd4) [%eval 29,60] [%emt 00:01:37]} Kb6 {(Rd7) [%eval -8,62] [%emt 00:01:09]}
47.Rcd1 {(Rcd1) [%eval 29,61] [%emt 00:19:43]} Kc6 {(Rd7) [%eval -8,63] [%emt 00:02:03]}
48.Bc3 {(Rd4) [%eval 21,44] [%emt 00:00:54]} Rg8 {(Rg8) [%eval -8,61] [%emt 00:01:27]}
49.Rg1 {(Kg5) [%eval 21,59] [%emt 00:02:00]} Rh8 {(Rd7) [%eval -8,60] [%emt 00:03:15]}
50.Ra1 {(Rd4) [%eval 21,50] [%emt 00:01:14]} Ra7 {(Rh7) [%eval -8,64] [%emt 00:01:22]}
51.Rh1 {(Rd4) [%eval 28,52] [%emt 00:01:37]} Rb7 {(Rd7) [%eval -8,60] [%emt 00:01:15]}
52.Kg5 {(Rd4) [%eval 28,60] [%emt 00:01:29]} Ra7 {(Rd7) [%eval -8,56] [%emt 00:01:02]}
53.Bb4 {(Rd4) [%eval 21,52] [%emt 00:00:26]} Rb7 {(Rd7) [%eval -8,57] [%emt 00:01:21]}
54.Rc1 {(Rd4) [%eval 21,54] [%emt 00:00:20]} Rh7 {(Rd7) [%eval -8,60] [%emt 00:01:05]}
55.Ra1 {(Rcd1) [%eval 21,49] [%emt 00:00:54]} Rb8 {(Rh8) [%eval -8,55] [%emt 00:01:02]}
56.Rad1 {(Rad1) [%eval 21,52] [%emt 00:00:18]} Rbh8 {(Rc8) [%eval -8,54] [%emt 00:00:52]}
57.Ra1 {(Rh1) [%eval 21,50] [%emt 00:00:36]} Ra8 {(Rc8) [%eval -8,54] [%emt 00:02:52]}
58.Bc3 {(Kf4) [%eval 21,52] [%emt 00:00:28]} Rg8 {(Rd8) [%eval -8,51] [%emt 00:00:50]}
59.Rad1 {(Re1) [%eval 21,53] [%emt 00:00:18]} Rd8 {(Rhh8) [%eval -8,50] [%emt 00:01:18]}
60.Ba5 {(Kf4) [%eval 21,117] [%emt 00:00:22]} Ra8 {(Rd7) [%eval -8,47] [%emt 00:03:40]}
61.Bb4 {(Bb4) [%eval 21,50] [%emt 00:00:19]} Rg8 {(Rhh8) [%eval -8,47] [%emt 00:00:36]}
1/2-1/2[/pgn]

[Graham Banks]

GAME 78

As black, Stockfish was uninterested in winning a pawn on d4, preferring to exchange a few minor pieces and safely complete development.
Both sides castled kingside, and so it was the queenside on which the action was now focused.
Once the queenside pawns were liquidated, we were left with a late middlegame/endgame. in which each side had queen, rook, knight and five pawns (symmetrical files).
Although Komodo Dragon then infiltrated the queenside with its queen and rook, there was nothing to be gained, and once the rooks were exchanged, a draw quickly followed.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.23"]
[Round "39.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "9:51:48 am"]
[ECO "C06"]
[Opening "C06"]
[TimeControl "7200+30"]
[PlyCount "131"]
[Number "78"]
[Termination "GUI adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.e4 {[%eval 0,1] [%emt 00:00:00]} e6 {[%eval 0,1] [%emt 00:00:00]}
2.d4 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
3.Nd2 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
4.e5 {[%eval 0,1] [%emt 00:00:00]} Nfd7 {[%eval 0,1] [%emt 00:00:00]}
5.Bd3 {[%eval 0,1] [%emt 00:00:00]} c5 {[%eval 0,1] [%emt 00:00:00]}
6.c3 {[%eval 0,1] [%emt 00:00:00]} Nc6 {[%eval 0,1] [%emt 00:00:00]}
7.Ngf3 {[%eval 0,1] [%emt 00:00:00]} Qb6 {[%eval 0,1] [%emt 00:00:00]}
8.O-O {[%eval 0,1] [%emt 00:00:00]} cxd4 {[%eval -30,51] [%emt 00:03:46]}
9.cxd4 {(cxd4) [%eval 56,40] [%emt 00:02:43]} a5 {(a5) [%eval -40,46] [%emt 00:02:13]}
10.h3 {(h3) [%eval 41,43] [%emt 00:08:36]} Be7 {(Be7) [%eval -14,48] [%emt 00:02:34]}
11.Re1 {(Re1) [%eval 47,43] [%emt 00:03:51]} a4 {(a4) [%eval -41,53] [%emt 00:04:47]}
12.Rb1 {(a3) [%eval 41,40] [%emt 00:02:50]} Nb4 {(Nb4) [%eval -2,50] [%emt 00:02:28]}
13.Nf1 {(Nf1) [%eval 30,44] [%emt 00:03:49]} Nf8 {(Nf8) [%eval 0,50] [%emt 00:02:26]}
14.Bg5 {(Ng3) [%eval 27,41] [%emt 00:02:13]} Nxd3 {(Bxg5) [%eval 0,57] [%emt 00:06:07]}
15.Qxd3 {(Qxd3) [%eval 21,44] [%emt 00:05:27]} Bxg5 {(Bxg5) [%eval 0,63] [%emt 00:01:38]}
16.Nxg5 {(Nxg5) [%eval 26,42] [%emt 00:02:00]} Ng6 {(Ng6) [%eval 0,60] [%emt 00:02:26]}
17.Nf3 {(Nf3) [%eval 32,41] [%emt 00:06:14]} Bd7 {(Bd7) [%eval 0,57] [%emt 00:05:35]}
18.h4 {(Qa3) [%eval 14,42] [%emt 00:03:43]} h6 {(h6) [%eval 0,59] [%emt 00:02:10]}
19.h5 {(Qa3) [%eval 8,44] [%emt 00:13:21]} Bb5 {(Ne7) [%eval 0,245] [%emt 00:02:47]}
20.Qe3 {(Qa3) [%eval 5,42] [%emt 00:03:20]} Ne7 {(Ne7) [%eval 0,57] [%emt 00:02:03]}
21.b3 {(b3) [%eval 0,46] [%emt 00:02:41]} Bxf1 {(Qa7) [%eval 0,59] [%emt 00:06:44]}
22.Rxf1 {(bxa4) [%eval 10,42] [%emt 00:02:04]} O-O {(O-O) [%eval 0,57] [%emt 00:01:58]}
23.Rfc1 {(Rfc1) [%eval 7,46] [%emt 00:02:04]} Nf5 {(axb3) [%eval 0,60] [%emt 00:02:28]}
24.Qd3 {(Qd3) [%eval 0,47] [%emt 00:01:33]} Qd8 {(Qd8) [%eval 0,66] [%emt 00:02:01]}
25.g3 {(b4) [%eval 0,54] [%emt 00:02:28]} axb3 {(axb3) [%eval 0,65] [%emt 00:02:05]}
26.Rxb3 {(axb3) [%eval 0,55] [%emt 00:03:01]} Rxa2 {(Rxa2) [%eval 0,66] [%emt 00:03:40]}
27.Rxb7 {(Rcb1) [%eval 0,60] [%emt 00:02:04]} Qa8 {(Qa8) [%eval 0,67] [%emt 00:04:10]}
28.Rb3 {(Rb3) [%eval 0,63] [%emt 00:01:46]} Rc8 {(Rb8) [%eval 0,63] [%emt 00:02:19]}
29.Rxc8 {(Rxc8) [%eval 0,62] [%emt 00:02:28]} Qxc8 {(Qxc8) [%eval 0,72] [%emt 00:02:15]}
30.g4 {(g4) [%eval 0,64] [%emt 00:06:49]} Ne7 {(Ne7) [%eval 0,69] [%emt 00:04:04]}
31.Qb1 {(Qe3) [%eval 0,60] [%emt 00:01:25]} Ra8 {(Ra8) [%eval 0,64] [%emt 00:02:02]}
32.Kg2 {(Rb7) [%eval 0,65] [%emt 00:01:49]} g5 {(g5) [%eval 0,70] [%emt 00:01:57]}
33.Rb5 {(Qb2) [%eval 0,65] [%emt 00:03:18]} Qd8 {(Qc4) [%eval 0,58] [%emt 00:02:08]}
34.Qb4 {(Qc1) [%eval 0,63] [%emt 00:01:38]} Qe8 {(Nc6) [%eval 0,71] [%emt 00:01:52]}
35.Rb7 {(Rb7) [%eval 0,64] [%emt 00:01:42]} Nc6 {(Nc6) [%eval 0,75] [%emt 00:01:51]}
36.Qc5 {(Qd6) [%eval 0,65] [%emt 00:01:55]} Na5 {(Rc8) [%eval 0,70] [%emt 00:02:41]}
37.Re7 {(Rc7) [%eval 0,62] [%emt 00:01:22]} Qd8 {(Qd8) [%eval 0,79] [%emt 00:02:04]}
38.Rc7 {(Qd6) [%eval 0,66] [%emt 00:02:03]} Nc4 {(Nc4) [%eval 0,131] [%emt 00:02:15]}
39.Re7 {(Re7) [%eval 0,60] [%emt 00:01:36]} Qf8 {(Ra2) [%eval 0,72] [%emt 00:02:51]}
40.Qc7 {(Qc7) [%eval 0,65] [%emt 00:03:06]} Rc8 {(Na3) [%eval 0,79] [%emt 00:02:14]}
41.Qa7 {(Qd7) [%eval 0,66] [%emt 00:02:08]} Na3 {(Rd8) [%eval 0,71] [%emt 00:01:39]}
42.Rb7 {(Rc7) [%eval 0,66] [%emt 00:06:17]} Nc4 {(Nc2) [%eval 0,73] [%emt 00:01:59]}
43.Re7 {(Rd7) [%eval 0,68] [%emt 00:03:40]} Ra8 {(Ra8) [%eval 0,69] [%emt 00:03:31]}
44.Qd7 {(Qd7) [%eval 0,66] [%emt 00:06:10]} Na3 {(Rb8) [%eval 0,72] [%emt 00:01:57]}
45.Qc6 {(Qc6) [%eval 0,65] [%emt 00:01:24]} Nc4 {(Rc8) [%eval 0,72] [%emt 00:01:59]}
46.Rc7 {(Qd7) [%eval 0,57] [%emt 00:01:06]} Rb8 {(Qb8) [%eval 0,68] [%emt 00:01:42]}
47.Ne1 {(Ne1) [%eval 0,60] [%emt 00:00:59]} Na5 {(Qb4) [%eval 0,72] [%emt 00:03:02]}
48.Qd7 {(Qd7) [%eval 0,60] [%emt 00:00:56]} Nb3 {(Rd8) [%eval 0,78] [%emt 00:04:17]}
49.Nf3 {(Qa4) [%eval 0,61] [%emt 00:01:06]} Ra8 {(Na5) [%eval 0,71] [%emt 00:01:08]}
50.Qd6 {(Qb5) [%eval 0,63] [%emt 00:00:58]} Rd8 {(Na5) [%eval 0,73] [%emt 00:04:02]}
51.Qb6 {(Qb6) [%eval 0,63] [%emt 00:00:43]} Rb8 {(Rb8) [%eval 0,69] [%emt 00:01:07]}
52.Qa7 {(Qa6) [%eval 0,65] [%emt 00:00:58]} Ra8 {(Ra8) [%eval 0,73] [%emt 00:01:23]}
53.Qb7 {(Qb6) [%eval 0,66] [%emt 00:01:00]} Na5 {(Na5) [%eval 0,74] [%emt 00:01:12]}
54.Qb1 {(Qb5) [%eval 0,64] [%emt 00:00:48]} Rc8 {(Qd8) [%eval 0,70] [%emt 00:01:32]}
55.Qb6 {(Qc1) [%eval 0,65] [%emt 00:01:12]} Rxc7 {(Rxc7) [%eval 0,77] [%emt 00:04:50]}
56.Qxc7 {(Qxc7) [%eval 0,68] [%emt 00:01:39]} Qa8 {(Nc4) [%eval 0,77] [%emt 00:01:59]}
57.Kg3 {(Qe7) [%eval 0,66] [%emt 00:00:57]} Nc6 {(Nc4) [%eval 0,74] [%emt 00:01:33]}
58.Qd7 {(Qd7) [%eval 0,67] [%emt 00:00:41]} Kg7 {(Kg7) [%eval 0,83] [%emt 00:01:41]}
59.Kg2 {(Kg2) [%eval 0,66] [%emt 00:01:00]} Kg8 {(Kg8) [%eval 0,73] [%emt 00:01:01]}
60.Qc7 {(Kg3) [%eval 0,68] [%emt 00:00:32]} Kg7 {(Kg7) [%eval 0,82] [%emt 00:01:13]}
61.Qd7 {(Qd7) [%eval 0,68] [%emt 00:00:40]} Kf8 {(Qa4) [%eval 0,83] [%emt 00:01:13]}
62.Qc7 {(Qd6) [%eval 0,66] [%emt 00:02:57]} Kg8 {(Kg8) [%eval 0,75] [%emt 00:03:18]}
63.Kg3 {(Qd6) [%eval 0,67] [%emt 00:00:32]} Kg7 {(Kg7) [%eval 0,74] [%emt 00:00:40]}
64.Qd7 {(Qd7) [%eval 0,68] [%emt 00:00:50]} Kg8 {(Qa4) [%eval 0,71] [%emt 00:00:32]}
65.Kg2 {(Kg2) [%eval 0,68] [%emt 00:00:47]} Kf8 {(Kg7) [%eval 0,71] [%emt 00:03:56]}
66.Qc7 {(Kg3) [%eval 0,70] [%emt 00:02:53]}
1/2-1/2[/pgn]

[Graham Banks]

And so, last, but not least, we present the Kings Gambit.

1. e4 e5 2. f4 *

White offers a pawn to divert the black e-pawn. If Black accepts the gambit, White has two main plans. The first is to play d4 and Bxf4, regaining the gambit pawn with central domination. The alternative plan is to play Nf3 and Bc4 followed by 0-0, when the semi-open f-file created after a pawn push to g3 allows White to attack the weakest point in Black's position, the pawn on f7. Theory has shown that, in order to maintain the gambit pawn, Black may well be forced to weaken the kingside with moves such as ...g5 or odd piece placement (e.g. ...Nf6–h5). A downside to the King's Gambit is that it weakens White's king's position, exposing it to the latent threat of ...Qh4+ (or ...Be7–h4+). With a black pawn on f4, White cannot usually respond to the check with g3, but if the king is forced to move then it also loses the right to castle.

https://en.wikipedia.org/wiki/King%27s_Gambit

[Graham Banks]

GAME 79

After Komodo Dragon had accepted the gambit pawn, Stockfish went for the 3. Nf3 route.
Komodo Dragon played 4...h6, and followed up by traipsing a knight onto g3, to inconvenience the rook on h1.
In the following moves, Stockfish captured the pawn on f4, but immediately gave up the pawn on e4 to open up lines against the enemy king. The position after 11...Nf6 looks a little harrowing for Komodo Dragon, although the white rook on h2 seems to be awkwardly placed.
Despite that, both sides were able to castle queenside and complete their development, with solid positions.
In fact, after Komodo Dragon had plonked a knight on c4, neither side wanted to do anything to break the equilibrium, and after much piece shuffling, draw adjudication ended the game.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.23"]
[Round "40.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "2:48:58 pm"]
[ECO "C34"]
[Opening "Fischer Defense, KGA"]
[TimeControl "7200+30"]
[PlyCount "143"]
[Number "79"]
[Termination "GUI adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.e4 {[%eval 0,1] [%emt 00:00:00]} e5 {[%eval 0,1] [%emt 00:00:00]}
2.f4 {[%eval 0,1] [%emt 00:00:00]} exf4 {[%eval 62,33] [%emt 00:01:37]}
3.Nf3 {(Nf3) [%eval -50,46] [%emt 00:04:31]} d6 {(d6) [%eval 64,37] [%emt 00:07:32]}
4.Bc4 {(Nc3) [%eval -39,46] [%emt 00:01:32]} h6 {(h6) [%eval 74,37] [%emt 00:02:21]}
5.h4 {(d4) [%eval -48,46] [%emt 00:02:05]} Nc6 {(Nf6) [%eval 50,40] [%emt 00:09:22]}
6.d4 {(d4) [%eval -36,47] [%emt 00:01:43]} Nf6 {(Nf6) [%eval 45,41] [%emt 00:02:45]}
7.Nc3 {(Nc3) [%eval -38,47] [%emt 00:02:25]} Nh5 {(Nh5) [%eval 55,41] [%emt 00:03:02]}
8.Nd5 {(Nd5) [%eval -27,49] [%emt 00:02:33]} Ng3 {(Ng3) [%eval 45,42] [%emt 00:02:16]}
9.Rh2 {(Rh2) [%eval -33,49] [%emt 00:01:55]} Ne7 {(Ne7) [%eval 50,41] [%emt 00:02:15]}
10.Nxf4 {(Nxf4) [%eval -42,49] [%emt 00:02:05]} Nxe4 {(Nxe4) [%eval 57,41] [%emt 00:02:25]}
11.Qe2 {(Qe2) [%eval -44,50] [%emt 00:02:04]} Nf6 {(Nf6) [%eval 48,42] [%emt 00:03:51]}
12.Bd2 {(Bd2) [%eval -35,50] [%emt 00:02:35]} d5 {(d5) [%eval 58,41] [%emt 00:02:27]}
13.Bb3 {(Bb3) [%eval -30,49] [%emt 00:02:02]} Bg4 {(Bg4) [%eval 51,43] [%emt 00:02:14]}
14.O-O-O {(O-O-O) [%eval -21,49] [%emt 00:02:20]} c6 {(c6) [%eval 44,44] [%emt 00:02:38]}
15.Re1 {(Re1) [%eval -29,50] [%emt 00:02:46]} Qc7 {(Qc7) [%eval 46,45] [%emt 00:07:43]}
16.Qd3 {(Qd3) [%eval -36,47] [%emt 00:02:17]} Bxf3 {(Bxf3) [%eval 45,48] [%emt 00:04:28]}
17.gxf3 {(Qxf3) [%eval -36,54] [%emt 00:02:14]} O-O-O {(O-O-O) [%eval 40,41] [%emt 00:02:02]}
18.h5 {(h5) [%eval -35,55] [%emt 00:03:47]} Kb8 {(Kb8) [%eval 41,48] [%emt 00:03:48]}
19.Rhh1 {(Rhh1) [%eval -30,60] [%emt 00:02:13]} Nc8 {(Nc8) [%eval 46,50] [%emt 00:06:15]}
20.Qf1 {(Qf1) [%eval -30,55] [%emt 00:02:04]} Bd6 {(Nb6) [%eval 41,50] [%emt 00:03:30]}
21.Nd3 {(Nd3) [%eval -30,51] [%emt 00:02:16]} Rhe8 {(Rhe8) [%eval 41,51] [%emt 00:03:40]}
22.c3 {(c3) [%eval -37,52] [%emt 00:04:45]} Nb6 {(Nb6) [%eval 41,51] [%emt 00:02:30]}
23.Kb1 {(Kb1) [%eval -37,56] [%emt 00:02:13]} Nc4 {(Nc4) [%eval 41,52] [%emt 00:02:50]}
24.Bc1 {(Bc1) [%eval -45,54] [%emt 00:06:23]} Ka8 {(Rd7) [%eval 41,52] [%emt 00:07:44]}
25.Rxe8 {(Rxe8) [%eval -34,53] [%emt 00:01:57]} Rxe8 {(Rxe8) [%eval 41,51] [%emt 00:01:26]}
26.Qg2 {(Qg1) [%eval -35,55] [%emt 00:01:58]} Bf8 {(Bf8) [%eval 41,49] [%emt 00:01:32]}
27.Bc2 {(Bc2) [%eval -34,53] [%emt 00:04:51]} a6 {(a6) [%eval 41,50] [%emt 00:01:20]}
28.a3 {(Bf4) [%eval -34,60] [%emt 00:02:22]} Qb6 {(Qe7) [%eval 41,49] [%emt 00:02:17]}
29.Ka2 {(Ka2) [%eval -35,57] [%emt 00:02:53]} Qd8 {(Qc7) [%eval 41,50] [%emt 00:01:53]}
30.Qf2 {(Kb1) [%eval -34,58] [%emt 00:01:55]} Bd6 {(Re6) [%eval 42,50] [%emt 00:03:55]}
31.Qg1 {(Qg2) [%eval -34,50] [%emt 00:02:35]} Rg8 {(Bf8) [%eval 41,47] [%emt 00:01:34]}
32.Qg2 {(Qg2) [%eval -18,46] [%emt 00:01:53]} Qe8 {(Ka7) [%eval 41,42] [%emt 00:02:06]}
33.Re1 {(Bb3) [%eval -18,56] [%emt 00:03:38]} Qc8 {(Qd8) [%eval 41,50] [%emt 00:02:27]}
34.Rh1 {(Rh1) [%eval -18,53] [%emt 00:01:43]} Qd7 {(Ka7) [%eval 41,50] [%emt 00:05:59]}
35.Kb1 {(Bb3) [%eval -26,56] [%emt 00:08:37]} Qe6 {(Qe7) [%eval 41,50] [%emt 00:01:36]}
36.Re1 {(Re1) [%eval -26,57] [%emt 00:01:19]} Qc8 {(Qd7) [%eval 41,52] [%emt 00:01:16]}
37.Rh1 {(Rh1) [%eval -18,52] [%emt 00:01:43]} Qc7 {(Bb8) [%eval 41,47] [%emt 00:02:17]}
38.Ka2 {(Ka2) [%eval -18,51] [%emt 00:22:42]} Ka7 {(Nb6) [%eval 41,48] [%emt 00:00:59]}
39.Ka1 {(Qf2) [%eval -21,49] [%emt 00:09:17]} Qe7 {(b5) [%eval 41,46] [%emt 00:01:04]}
40.Re1 {(Re1) [%eval -18,58] [%emt 00:00:40]} Qd7 {(Qd8) [%eval 41,48] [%emt 00:01:12]}
41.Rh1 {(Rh1) [%eval -19,55] [%emt 00:01:21]} Bc7 {(Nb6) [%eval 41,49] [%emt 00:01:18]}
42.Kb1 {(Ka2) [%eval -18,59] [%emt 00:00:56]} Bd6 {(Bd6) [%eval 41,48] [%emt 00:01:07]}
43.Ka2 {(Ka1) [%eval -18,60] [%emt 00:00:53]} Qc8 {(Ka8) [%eval 41,47] [%emt 00:00:57]}
44.Kb1 {(Qf2) [%eval -18,62] [%emt 00:01:36]} Bc7 {(Qe8) [%eval 41,48] [%emt 00:01:05]}
45.Ka2 {(Ka2) [%eval -18,57] [%emt 00:00:53]} Ka8 {(Bd6) [%eval 41,50] [%emt 00:01:19]}
46.Ka1 {(Bb3) [%eval -18,58] [%emt 00:00:49]} Qd8 {(Ka7) [%eval 41,44] [%emt 00:00:58]}
47.Kb1 {(Ka2) [%eval -18,56] [%emt 00:00:44]} Qd6 {(Bb8) [%eval 41,47] [%emt 00:01:01]}
48.Ka2 {(Ka2) [%eval -18,55] [%emt 00:01:03]} Qf8 {(Qe6) [%eval 41,48] [%emt 00:01:22]}
49.Kb1 {(Ka1) [%eval -18,51] [%emt 00:00:34]} Qd6 {(Qd8) [%eval 41,50] [%emt 00:01:20]}
50.Bf4 {(Ka2) [%eval -16,55] [%emt 00:01:34]} Qd7 {(Qd8) [%eval 41,48] [%emt 00:01:08]}
51.Bc1 {(Bc1) [%eval -16,54] [%emt 00:00:21]} Ka7 {(Ka7) [%eval 41,47] [%emt 00:01:24]}
52.Ka1 {(Ka1) [%eval -16,56] [%emt 00:00:29]} Qd8 {(Qf5) [%eval 41,47] [%emt 00:00:49]}
53.Ka2 {(Kb1) [%eval -16,57] [%emt 00:00:29]} Bd6 {(Qd7) [%eval 40,45] [%emt 00:00:44]}
54.Kb1 {(Qh3) [%eval -16,51] [%emt 00:03:37]} Qe7 {(Qe8) [%eval 39,45] [%emt 00:00:49]}
55.Re1 {(Re1) [%eval -18,44] [%emt 00:00:10]} Qc7 {(Qd7) [%eval 39,45] [%emt 00:00:47]}
56.Rh1 {(Rh1) [%eval -16,39] [%emt 00:00:12]} Qe7 {(a5) [%eval 37,44] [%emt 00:02:15]}
57.Re1 {(Re1) [%eval -16,47] [%emt 00:00:14]} Qd7 {(Qd7) [%eval 28,43] [%emt 00:00:47]}
58.Rh1 {(Rh1) [%eval -16,52] [%emt 00:00:22]} Qc8 {(Qc7) [%eval 26,39] [%emt 00:00:41]}
59.Ka1 {(Ka2) [%eval -16,51] [%emt 00:00:15]} Qe8 {(Qe8) [%eval 24,40] [%emt 00:00:30]}
60.Re1 {(Re1) [%eval -16,50] [%emt 00:00:25]} Qf8 {(Qf8) [%eval 24,44] [%emt 00:01:09]}
61.Rh1 {(Rh1) [%eval -24,51] [%emt 00:01:57]} a5 {(Qc8) [%eval 24,45] [%emt 00:00:58]}
62.a4 {(Ka2) [%eval -22,50] [%emt 00:00:41]} Qe7 {(Qc8) [%eval 24,36] [%emt 00:00:33]}
63.Re1 {(Re1) [%eval -24,38] [%emt 00:00:06]} Qc7 {(Qd7) [%eval 24,44] [%emt 00:00:29]}
64.Rh1 {(Rh1) [%eval -31,40] [%emt 00:00:11]} Ka8 {(Qd7) [%eval 24,44] [%emt 00:00:27]}
65.Ka2 {(Ka2) [%eval -15,38] [%emt 00:00:31]} Qe7 {(Qd8) [%eval 24,43] [%emt 00:00:31]}
66.Re1 {(Re1) [%eval -27,43] [%emt 00:00:20]} Qd8 {(Qd8) [%eval 24,42] [%emt 00:00:30]}
67.Rh1 {(Rh1) [%eval -17,36] [%emt 00:00:14]} Qf8 {(Qc7) [%eval 24,45] [%emt 00:00:34]}
68.Ka1 {(Ka1) [%eval -19,44] [%emt 00:00:25]} Qe7 {(Qe7) [%eval 24,44] [%emt 00:00:29]}
69.Re1 {(Re1) [%eval -13,43] [%emt 00:00:16]} Qc7 {(Qd8) [%eval 23,46] [%emt 00:00:31]}
70.Rh1 {(Rh1) [%eval -12,44] [%emt 00:00:30]} Qc8 {(Ka7) [%eval 23,44] [%emt 00:00:30]}
71.Ka2 {(Ka2) [%eval -11,49] [%emt 00:00:23]} Qd8 {(Qc7) [%eval 23,45] [%emt 00:00:41]}
72.Ka1 {(Ka1) [%eval -26,47] [%emt 00:02:04]}
1/2-1/2[/pgn]

[Graham Banks]

GAME 80

As white, Komodo Dragon played 4. d4 rather than 4. Bc4, and when Stockfish played 4...g5, immediately challenged that with 5. g3.
The situation on the kingside became quite interesting during the following moves, but both sides were able to castle queenside, and Stockfish swapped off queens, perhaps thinking that it might improve the chances of getting something out of its extra pawn.
However, Komodo Dragon was able to recoup the pawn after ganging up along the f-file, and the exchanges that occurred during that process led to an endgame where each side had rook, minor piece and four pawns, with the pawns all being on the queenside.
Neither engine could really make progress though, and so the match ended with a whimper, rather than a bang.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.23"]
[Round "40.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "7:55:20 pm"]
[ECO "C34"]
[Opening "Fischer Defense, KGA"]
[TimeControl "7200+30"]
[PlyCount "122"]
[Number "80"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.e4 {[%eval 0,1] [%emt 00:00:00]} e5 {[%eval 0,1] [%emt 00:00:00]}
2.f4 {[%eval 0,1] [%emt 00:00:00]} exf4 {[%eval 65,44] [%emt 00:02:32]}
3.Nf3 {(Nf3) [%eval -52,33] [%emt 00:02:36]} d6 {(Nf6) [%eval 67,42] [%emt 00:03:57]}
4.d4 {(Bc4) [%eval -53,38] [%emt 00:05:11]} g5 {(g5) [%eval 41,45] [%emt 00:04:40]}
5.g3 {(g3) [%eval -49,40] [%emt 00:12:24]} Bg7 {(Bg7) [%eval 49,43] [%emt 00:01:33]}
6.h3 {(h3) [%eval -34,37] [%emt 00:02:35]} g4 {(g4) [%eval 41,48] [%emt 00:05:21]}
7.hxg4 {(hxg4) [%eval -54,39] [%emt 00:02:28]} fxg3 {(fxg3) [%eval 44,47] [%emt 00:02:00]}
8.g5 {(g5) [%eval -46,40] [%emt 00:07:48]} Nc6 {(Bg4) [%eval 34,46] [%emt 00:06:15]}
9.Rg1 {(Rg1) [%eval -35,38] [%emt 00:04:36]} Bg4 {(Bg4) [%eval 38,48] [%emt 00:05:09]}
10.Rxg3 {(Rxg3) [%eval -33,41] [%emt 00:04:52]} Bxf3 {(Bxf3) [%eval 38,45] [%emt 00:01:50]}
11.Rxf3 {(Qxf3) [%eval -30,41] [%emt 00:04:57]} Nxd4 {(Nxd4) [%eval 35,45] [%emt 00:01:48]}
12.Rf2 {(Rf2) [%eval -32,41] [%emt 00:01:54]} h6 {(h6) [%eval 34,52] [%emt 00:02:13]}
13.Be3 {(Be3) [%eval -34,43] [%emt 00:03:58]} Nc6 {(Nc6) [%eval 46,50] [%emt 00:02:36]}
14.Qd5 {(Qd5) [%eval -26,44] [%emt 00:04:05]} Ne5 {(Ne5) [%eval 37,52] [%emt 00:02:06]}
15.Nd2 {(Qb3) [%eval -31,42] [%emt 00:08:32]} hxg5 {(hxg5) [%eval 27,51] [%emt 00:02:36]}
16.Qb3 {(Qb3) [%eval -32,38] [%emt 00:02:11]} Nh6 {(Bf6) [%eval 29,50] [%emt 00:10:40]}
17.Be2 {(Be2) [%eval -21,40] [%emt 00:02:01]} Qe7 {(Qe7) [%eval 20,47] [%emt 00:01:16]}
18.Rg2 {(Rg2) [%eval -21,41] [%emt 00:02:05]} O-O-O {(O-O-O) [%eval 23,51] [%emt 00:01:47]}
19.O-O-O {(O-O-O) [%eval -21,46] [%emt 00:01:44]} Qe6 {(Qe6) [%eval 15,52] [%emt 00:04:32]}
20.Bxg5 {(Bxg5) [%eval -19,46] [%emt 00:01:31]} Qxb3 {(Rdg8) [%eval 13,52] [%emt 00:02:34]}
21.axb3 {(axb3) [%eval -20,42] [%emt 00:01:18]} Rdf8 {(Rdg8) [%eval 20,54] [%emt 00:01:50]}
22.Nc4 {(Kb1) [%eval -16,50] [%emt 00:04:35]} Nxc4 {(a6) [%eval 13,57] [%emt 00:01:37]}
23.Bxc4 {(Bxc4) [%eval -16,56] [%emt 00:01:54]} Be5 {(Be5) [%eval 21,61] [%emt 00:01:51]}
24.Rf2 {(Rh1) [%eval -16,56] [%emt 00:03:02]} f6 {(f6) [%eval 13,60] [%emt 00:03:35]}
25.Rdf1 {(Be6) [%eval -16,59] [%emt 00:01:45]} Kd7 {(Kd7) [%eval 11,60] [%emt 00:02:17]}
26.Bxf6 {(Bxf6) [%eval -16,62] [%emt 00:01:35]} Bxf6 {(Bxf6) [%eval 11,71] [%emt 00:01:51]}
27.Rxf6 {(Rxf6) [%eval -16,63] [%emt 00:01:40]} Rxf6 {(Rxf6) [%eval 11,72] [%emt 00:01:52]}
28.Rxf6 {(Rxf6) [%eval -16,65] [%emt 00:02:48]} Ng4 {(Ng4) [%eval 10,63] [%emt 00:03:00]}
29.Bb5 {(Rf7) [%eval -16,64] [%emt 00:02:27]} Kc8 {(Ke7) [%eval 19,84] [%emt 00:02:39]}
30.Rf4 {(Re6) [%eval -16,64] [%emt 00:01:43]} Ne5 {(Ne5) [%eval 19,76] [%emt 00:01:43]}
31.b4 {(b4) [%eval -16,67] [%emt 00:01:30]} a6 {(a6) [%eval 18,65] [%emt 00:02:20]}
32.Bf1 {(Bf1) [%eval -16,66] [%emt 00:02:44]} Kb8 {(Rh1) [%eval 18,245] [%emt 00:02:17]}
33.Kd2 {(Kd2) [%eval -16,66] [%emt 00:02:46]} Ka7 {(Rh1) [%eval 18,68] [%emt 00:03:16]}
34.Kc3 {(Kc3) [%eval -16,66] [%emt 00:01:41]} Kb6 {(b5) [%eval 17,65] [%emt 00:02:31]}
35.Rf2 {(Bd3) [%eval -16,61] [%emt 00:01:11]} Kc6 {(Kc6) [%eval 17,72] [%emt 00:01:45]}
36.Bd3 {(Bd3) [%eval -16,64] [%emt 00:02:07]} Kb6 {(Rh3) [%eval 17,70] [%emt 00:01:29]}
37.Rg2 {(Rf4) [%eval -16,60] [%emt 00:01:09]} Rh1 {(Rh1) [%eval 17,69] [%emt 00:01:45]}
38.Rg8 {(Rf2) [%eval -16,64] [%emt 00:01:15]} Kc6 {(Kc6) [%eval 17,67] [%emt 00:01:30]}
39.Rf8 {(Rf8) [%eval -16,65] [%emt 00:01:56]} Kb6 {(Rh3) [%eval 16,64] [%emt 00:03:40]}
40.Re8 {(Rf1) [%eval -16,65] [%emt 00:01:37]} Rg1 {(Rg1) [%eval 17,62] [%emt 00:01:35]}
41.Re7 {(Rh8) [%eval -16,66] [%emt 00:02:15]} Nc6 {(Rg3) [%eval 16,66] [%emt 00:01:36]}
42.Re6 {(Rh7) [%eval -16,66] [%emt 00:01:50]} Ra1 {(Re1) [%eval 16,70] [%emt 00:01:19]}
43.b3 {(Rf6) [%eval -16,65] [%emt 00:02:24]} Rh1 {(Re1) [%eval 16,69] [%emt 00:02:50]}
44.Rg6 {(Rf6) [%eval -16,66] [%emt 00:03:25]} Ne5 {(Rh3) [%eval 16,68] [%emt 00:01:31]}
45.Rg7 {(Rg7) [%eval -16,65] [%emt 00:01:04]} Nc6 {(Rh3) [%eval 16,67] [%emt 00:01:30]}
46.Rg5 {(Rg6) [%eval -9,65] [%emt 00:04:45]} Rh8 {(Rh4) [%eval 16,69] [%emt 00:01:39]}
47.b5 {(Rg1) [%eval -8,58] [%emt 00:00:59]} axb5 {(axb5) [%eval 14,59] [%emt 00:01:16]}
48.Rxb5 {(Rxb5) [%eval -8,59] [%emt 00:00:45]} Ka7 {(Ka7) [%eval 13,61] [%emt 00:01:08]}
49.Rg5 {(Rg5) [%eval -8,58] [%emt 00:00:38]} Ne5 {(Ne5) [%eval 13,61] [%emt 00:01:21]}
50.Rg7 {(Rg7) [%eval -8,59] [%emt 00:00:49]} Kb6 {(Kb6) [%eval 12,59] [%emt 00:01:19]}
51.Kb4 {(Rg1) [%eval -8,60] [%emt 00:00:44]} Ra8 {(Rf8) [%eval 12,62] [%emt 00:02:26]}
52.Kc3 {(Kc3) [%eval -8,63] [%emt 00:00:51]} Rh8 {(Ra5) [%eval 12,54] [%emt 00:00:59]}
53.Bc4 {(Rg1) [%eval -8,60] [%emt 00:01:14]} Rh3 {(Rh6) [%eval 11,59] [%emt 00:01:38]}
54.Bd3 {(Bd3) [%eval -8,62] [%emt 00:01:08]} Kc6 {(Re3) [%eval 11,66] [%emt 00:01:11]}
55.Rg8 {(Rg8) [%eval -8,60] [%emt 00:00:42]} Kd7 {(Rh2) [%eval 11,57] [%emt 00:01:14]}
56.Rb8 {(Rg7) [%eval 0,55] [%emt 00:01:10]} Kc6 {(b6) [%eval 11,66] [%emt 00:01:13]}
57.Rg8 {(Rg8) [%eval -8,57] [%emt 00:00:41]} Kb6 {(Rh6) [%eval 10,54] [%emt 00:01:07]}
58.Rg7 {(Rg1) [%eval -8,61] [%emt 00:00:49]} Rh1 {(Re3) [%eval 10,60] [%emt 00:01:06]}
59.Rg8 {(Rg5) [%eval -8,58] [%emt 00:00:43]} Kc6 {(Rh7) [%eval 10,62] [%emt 00:01:03]}
60.Re8 {(Rg7) [%eval -8,56] [%emt 00:00:33]} Nd7 {(Rg1) [%eval 10,65] [%emt 00:02:10]}
61.Rg8 {(Rg8) [%eval -8,58] [%emt 00:00:37]} Ne5 {(Rh3) [%eval 10,67] [%emt 00:01:01]}
1/2-1/2[/pgn]

[Graham Banks]

As promised, the match PGN (80 games) can be downloaded here:

http://kirill-kryukov.com/chess/discuss ... p?id=50920

Stockfish won by +3 =77 -0

[Ajedrecista]

Hello Graham:

As promised, the match PGN (80 games) can be downloaded here:

http://kirill-kryukov.com/chess/discuss ... p?id=50920

Stockfish won by +3 =77 -0

Congratulations for such an awesome match! I was totally unaware of it until I saw a reference at the General Topics section. The final score resembles to some scores of World Checkers Championships of decades ago, when there were fantastic players... and computer checkers matches between the top engines of some years ago. I enjoyed not only the games themselves, but also the way of introducing each opening and the summary of each game. It is definitively a must read!

I want to add my two cents finding when each line was first played, transpositions included. I have checked two different opening explorers from different sources: ChessGames and Chess Tempo, both of them allowing to order the games by date. The games brought here are restricted to the games included in both databases, of course, so it does not mean that all the games brought here are really the first games with those lines.

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

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 *
Ake Hellstrom {1-0} Rudolf Belis.
ICCF-Cup corr (1982) (correspondence).

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nbd2 *
W W Rouse Ball {0-1} Samuel Meredith.
3rd Oxford - Cambridge Varsity m (1875), City of London CC, London ENG, Mar-19.

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 cxd4 *
Frank Marshall {1-0} Kenneth Samuel Howard.
Sylvan Beach (1904), Sylvan Beach, NY USA, rd 2, Aug-17.

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 *
Siegbert Tarrasch {0-1} Alexander Alekhine.
Bad Pistyan (1922), Piestany CSR, rd 1, Apr-07.

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. e4 *
Frank Marshall {½-½} Carl Schlechter.
Monte Carlo (1904), Monte Carlo MNC, rd 6, Feb-13.

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 dxe4 5. Nxe4 Bb4+ 6. Bd2 *
Frank Marshall {1-0} Carl Schlechter.
Monte Carlo (1902), Monte Carlo MNC, rd 3, Feb-06.

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 *
Karl Walbrodt {1-0} Enrique Conill / Enrique Ostolaza / López / Herrera.
Consultation game (1893) (exhibition), Havana CUB, Feb-18.

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 *
Giulio Cesare Polerio {1-0} Domenico.
Rome (1610), Rome ITA.

1. d4 d5 2. c4 *
Gioachino Greco {1-0} NN.
Miscellaneous game (1620), ?, rd 75.

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. e6 *
Aron Nimzowitsch {1-0} Alexander Alekhine.
Semmering (1926), Semmering AUT, rd 1, Mar-07.
>>> POSSIBLY OTHER GAME FROM 1926 WIHTHOUT KNOWN EXACT DATE:
F Gobl {1-0} Jonas.
Augsburg (1926), Augsburg GER.

1. f4 e5 *
Gioachino Greco {1-0} NN.
Miscellaneous game (1620), ?, rd 35.

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 *
Adolf Anderssen {0-1} Tassilo von der Lasa.
Breslau (1846).

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 *
Captain William Davies Evans {1-0} Alexander McDonnell.
London (1829) (probably analysis), London ENG.

1. e4 e5 2. d4 exd4 3. c3 *
Captain William Davies Evans {1-0} George Perigal.
London (1843), London ENG, Apr-30.

1. d4 Nf6 2. c4 e5 *
Adler {0-1} Geza Maroczy.
Budapest (1896), Budapest AUH, Feb-03.

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 *
Lionel Kieseritzky {1-0} Conrad Waldemar Vitzthum von Eckstaedt.
Paris (1846), Paris FRA, Jan-05.

1. d4 f5 2. e4 *
Howard Staunton {1-0} Bernhard Horwitz.
London (1842), London ENG.

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 *
John Brand {0-1} Jacques-Francois Mouret.
Casual (1820), Match?, rd 3.

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d4 *
Jacob Henry Sarratt {1-0} NN.
Casual (1818), ENG.

1. d4 d5 2. c4 e5 *
NN {0-1} P Lewin.
Keresev (1864).

1. d4 Nf6 2. c4 c5 3. d5 b5 *
Einar Thorvaldsson {0-1} Paul Vaitonis.
Non-FIDE Munich Olympiad (1936), Munich GER, rd 21, Sep-01.

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 *
Wolf Meyer Popert {1-0} Howard Staunton.
London (1841), London ENG.

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 Nxe4 5. d5 Bc5 *
Robert Barnett Brien {1-0} Ernst Falkbeer.
Match (1855), London ENG, rd 4.

1. e4 e5 2. Bc4 Nf6 3. d4 *
Domenico Lorenzo Ponziani {1-0} NN.
Modena (1769), Modena ITA.

1. d4 d5 2. e4 *
Borsdorff {0-1} A Peter.
Switzerland (1844), SUI.

1. e4 c5 2. b4 *
Gioachino Greco {1-0} NN.
Miscellaneous game (1620), ?, rd 31.

1. e4 d5 2. exd5 Nf6 *
Wilhelm Hanstein {0-1} Tassilo von der Lasa.
? (1839).
>>> POSSIBLY OTHER GAME FROM THE SAME YEAR:
Wilhelm Hanstein {½-½} Tassilo von der Lasa.
? (1839).

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. b4 *
Emanuel Lasker {1-0} Aaron Goldberg.
Simul, 19b (1905) (exhibition), Mercantile Library, Philadelphia, PA USA, Apr-29.

1. b4 e5 2. Bb2 f6 3. e4 Bxb4 *
Savielly Tartakower {1-0} Richard Reti.
Vienna m (1919), Vienna AUT.

1. Nf3 d5 2. c4 *
Ilya Shumov {0-1} Carl Jaenisch.
St Petersburg m1 (1854), St. Petersburg RUE.

1. c4 e5 2. Nc3 Nf6 3. Nf3 e4 4. Ng5 b5 *
Samuel Reshevsky {1-0} Juan Manuel Bellón Lopez.
Palma de Mallorca (1971), Palma ESP, rd 15, Dec-18.

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Bd3 *
David Janowski {1-0} Willem Schelfhout.
Scheveningen (1913), Scheveningen NED, rd 5, Jul-31.

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 *
Borsdorff {0-1} A Peter.
Switzerland (1844), SUI.

1. d4 d5 2. c4 Nc6 *
Vasily Tabunshchikov {0-1} Emmanuel Schiffers.
RUS corr (1894) (correspondence), ?

1. d4 d5 2. c4 c6 3. Nc3 e5 *
Roycroft {1-0} NN.
England (1862), ENG.

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. e4 *
Oscar Chajes {0-1} Carl Schlechter.
Karlsbad (1911), Karlsbad (Karlovy Vary) AUH, rd 1, Aug-21.

1. e4 e5 2. Nf3 Nc6 3. c3 f5 *
Captain William Davies Evans {1-0} Bernhard Horwitz.
London (1843), London ENG.

1. e4 e6 2. b3 d5 3. Bb2 *
Bernhard Horwitz {0-1} Edward Pindar.
Manchester CC ch m (1861), Manchester ENG, rd 3, Apr-??

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 *
William Pollock {0-1} Eugene Delmar.
Match Pollock-Delmar (1891), Skaneateles NY USA, rd 7, Jul-24.

1. e4 e5 2. f4 *
Ruy López de Segura {1-0} Giovanni Leonardo Di Bona da Cutri.
Papal States Exhibition (1560), Rome, Papal States, Apr-??

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

I hope no typos. Any corrections with earlier games and their sources are welcome.

I want to note that the opening of games 49 and 50 (1. d4 d5 2. e4 *) is very similar to the one of games 65 and 66 (1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 *) or at least they had very similar ideas IMHO. Other openings share more moves but then there are more alternatives and their ideas are different, so I only highlight these two.

Although there are much more interesting openings/gambits, some interesting gambits to test would have been:

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

1. e4 e5 2. d4 cxd4 3. c3 dxc3 4. Bc4 cxb2 *
Similar to the opening of games 31 and 32 but going the extra mile, here white sacrificing one additional pawn in order to get very active bishops from the very beginning of the game. The first game of this opening that I found is:
Hans Lindehn {1-0} Ignatz von Kolisch.
Paris (1860), Paris FRA.

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. Bg5 dxc4 6. e4 b5 *
The Botvinnik variation of the Semi-Slav Defence. It is a very sharp opening where white builds a strong centre at the cost of lose a pawn. It is a very complicated opening and has been heavily analyzed until many, many moves (like for example the Marshall Gambit of the Ruy López Opening). The first game of this opening that I found is:
Salomon Flohr {1-0} Gideon Stahlberg.
Zurich (1934), Zurich SUI, rd 10, Jul-23.

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 O-O 10. O-O Bg4 11. f3 Na5 12.Bxf7+ *
The Seville Variation of the Grünfeld Defence. Already played before, it was played four times at the World Chess Championship of 1987 held in Seville (Spain), where it gained attention and the name. White is a pawn up, but black has compensation. The first game of this opening that I found is:
Boris Spassky {1-0} Viktor Korchnoi.
USSR Championship (1955), Moscow URS, rd 18, Mar-12.

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nxf7 *
The Cochrane Gambit of the Petrov Defence. Highly speculative, black's only chance is to accept the gambit. The first game of this opening that I found is:
John Cochrane {1-0} Bonnerjee Mohishunder.
Calcutta (1848).

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 *
A sharp line where white usually defends his e-pawn at first rather than play an early exf5. The first game of this opening that I found is:
Bonnerjee Mohishunder {0-1} John Cochrane.
Calcutta (1850).

1. e4 e5 2. Nf3 f5 *
The Latvian Gambit, AKA the Greco Countergambit. Probably the most difficult gambit to hold for the weak side of all that I post. Black presents a very aggressive, double-edged defence that could be a surprise weapon if white does not know how to play; otherwise, white has at least the upper hand. 3. Nxe5 is the mainline, with 3. ... Qf6 as the usual reply; while 3. fxe5 should be responded with 3. ... e4. There is a lot of theory for this complex defence. The first game of this opening that I found is:
Giulio Cesare Polerio {0-1} Giovanni Leonardo Di Bona da Cutri.
Rome (1590), Rome ITA.

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

I am curious to see if both SF 15 and Dragon 3 are able to hold with the 'weak' sides under the conditions of the great match of this thread.

Regards from Spain.

Ajedrecista.

[Graham Banks]

I did try out a few of the gambit lines that you posted, and discarded them because they're pretty much lost.

The Latvian Gambit is one obvious example.