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

[Graham Banks]

If you're taking requests, would be fun to see the Noteboom.

Hi Erin,

the 40 lines chosen have been used to create an opening book (GB-Gambit), which is being used for the match.
So no requests unfortunately (probably a good thing, as I'd likely be inundated with requests).

[Graham Banks]

GAME 20

The return game took a different path early, with Stockfish giving back the pawn by playing 5...c5.
However, after black had played g6 on the next move, Komodo Dragon also employed the h-pawn advance seen previously, although it denuded the black kingside after exchanging pawns on g6 and rooks on h8.
With 12....Bxc3, Stockfish shattered Komodo Dragon's queenside pawn structure, winning a pawn in the process, and making the white king look rather vulnerable.
An interesting middlegame ensued, with play focused against white's kingside, but once the queens had come off, the endgame looked pretty even.
After further exchanges, the game entered a bishop of opposite colours and pawns ending. with the result clearly obvious.


[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.12"]
[Round "10.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "5:36:19 am"]
[ECO "B02"]
[Opening "Spielmann Variation, Alekhine"]
[TimeControl "7200+30"]
[PlyCount "139"]
[Number "20"]
[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]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
2.Nc3 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
3.e5 {[%eval 0,1] [%emt 00:00:00]} Nfd7 {[%eval 0,1] [%emt 00:00:00]}
4.e6 {[%eval 0,1] [%emt 00:00:00]} fxe6 {[%eval 0,56] [%emt 00:03:02]}
5.d4 {(d4) [%eval 0,41] [%emt 00:02:30]} c5 {(g6) [%eval 0,55] [%emt 00:01:57]}
6.dxc5 {(dxc5) [%eval 23,40] [%emt 00:02:32]} g6 {(g6) [%eval 0,55] [%emt 00:01:46]}
7.h4 {(h4) [%eval 0,40] [%emt 00:03:12]} Bg7 {(Nc6) [%eval 0,59] [%emt 00:05:21]}
8.h5 {(h5) [%eval 0,44] [%emt 00:01:56]} Nc6 {(Nc6) [%eval 0,57] [%emt 00:01:37]}
9.hxg6 {(hxg6) [%eval 0,47] [%emt 00:07:10]} hxg6 {(hxg6) [%eval 0,59] [%emt 00:02:20]}
10.Rxh8 {(Rxh8) [%eval 0,49] [%emt 00:02:24]} Bxh8 {(Bxh8) [%eval 0,57] [%emt 00:11:54]}
11.Qg4 {(Bd3) [%eval 0,47] [%emt 00:02:14]} Nf8 {(Nf8) [%eval 0,59] [%emt 00:02:52]}
12.Bd2 {(Bd2) [%eval 0,49] [%emt 00:04:30]} Bxc3 {(Bxc3) [%eval 0,59] [%emt 00:02:22]}
13.bxc3 {(bxc3) [%eval 0,49] [%emt 00:01:56]} Qa5 {(Qa5) [%eval 0,60] [%emt 00:04:51]}
14.Qg3 {(Nf3) [%eval 0,49] [%emt 00:05:03]} Qxc5 {(e5) [%eval 0,53] [%emt 00:01:54]}
15.Nf3 {(Nf3) [%eval 0,51] [%emt 00:02:11]} Bd7 {(Bd7) [%eval 0,59] [%emt 00:02:01]}
16.Bd3 {(Bd3) [%eval 0,53] [%emt 00:02:10]} O-O-O {(O-O-O) [%eval 0,57] [%emt 00:01:51]}
17.Kf1 {(Ne5) [%eval 0,47] [%emt 00:01:56]} Nh7 {(Nh7) [%eval 0,59] [%emt 00:02:15]}
18.Re1 {(Re1) [%eval -4,51] [%emt 00:03:42]} Nf6 {(Nf6) [%eval 0,57] [%emt 00:03:01]}
19.Qh4 {(Qh4) [%eval -4,53] [%emt 00:05:55]} Ne4 {(Ne4) [%eval 0,56] [%emt 00:01:53]}
20.Bxe4 {(Bxe4) [%eval -4,51] [%emt 00:02:00]} dxe4 {(dxe4) [%eval 0,64] [%emt 00:02:22]}
21.Qxe4 {(Qxe4) [%eval -5,52] [%emt 00:02:37]} Qh5 {(Qh5) [%eval 0,66] [%emt 00:04:33]}
22.Bf4 {(Bf4) [%eval -4,55] [%emt 00:02:19]} Qh1 {(Qh1) [%eval 0,62] [%emt 00:04:12]}
23.Ke2 {(Ke2) [%eval -3,56] [%emt 00:05:24]} Qxg2 {(Qxg2) [%eval 0,64] [%emt 00:01:51]}
24.Rg1 {(Rg1) [%eval -3,60] [%emt 00:01:58]} Qh3 {(Qh3) [%eval 0,69] [%emt 00:02:56]}
25.Rxg6 {(Rxg6) [%eval -3,62] [%emt 00:03:55]} Qf5 {(Qf5) [%eval 0,70] [%emt 00:02:31]}
26.Qxf5 {(Qxf5) [%eval -3,62] [%emt 00:09:46]} exf5 {(exf5) [%eval 0,73] [%emt 00:01:48]}
27.Ke3 {(Ke3) [%eval -3,64] [%emt 00:02:52]} Be8 {(Be8) [%eval 0,76] [%emt 00:01:55]}
28.Rg8 {(Rg8) [%eval -3,62] [%emt 00:01:39]} Bf7 {(Bf7) [%eval 0,76] [%emt 00:04:09]}
29.Rxd8 {(Rxd8) [%eval -3,64] [%emt 00:02:53]} Nxd8 {(Nxd8) [%eval 0,74] [%emt 00:01:21]}
30.a3 {(a3) [%eval -3,64] [%emt 00:08:22]} Nc6 {(Nc6) [%eval 0,80] [%emt 00:01:47]}
31.Ne5 {(Ne5) [%eval -1,65] [%emt 00:02:56]} Nxe5 {(Nxe5) [%eval 0,84] [%emt 00:01:47]}
32.Bxe5 {(Bxe5) [%eval -1,68] [%emt 00:02:00]} Bd5 {(Bd5) [%eval 0,86] [%emt 00:01:41]}
33.Kd3 {(Kf4) [%eval -1,66] [%emt 00:06:00]} Kd7 {(Be4) [%eval 0,77] [%emt 00:01:43]}
34.c4 {(Kd4) [%eval 0,66] [%emt 00:02:02]} Bc6 {(Be4) [%eval 0,84] [%emt 00:02:14]}
35.Kc3 {(Kd4) [%eval 0,67] [%emt 00:01:19]} a6 {(Ke6) [%eval 0,74] [%emt 00:01:46]}
36.Kb4 {(Kd4) [%eval 0,69] [%emt 00:01:11]} Bf3 {(Be4) [%eval 0,79] [%emt 00:01:36]}
37.Kc5 {(Kc5) [%eval 0,69] [%emt 00:01:08]} Be4 {(Ke6) [%eval 0,78] [%emt 00:02:04]}
38.Kb6 {(Kb6) [%eval 0,66] [%emt 00:02:34]} Bc6 {(Ke6) [%eval 0,76] [%emt 00:01:55]}
39.c3 {(f4) [%eval 0,71] [%emt 00:02:48]} Kc8 {(Ke6) [%eval 0,84] [%emt 00:02:00]}
40.c5 {(Bh2) [%eval 0,70] [%emt 00:03:28]} Ba4 {(Kd7) [%eval 0,176] [%emt 00:03:06]}
41.Bf4 {(Bf4) [%eval 0,70] [%emt 00:01:36]} Bc6 {(Bb5) [%eval 0,80] [%emt 00:01:28]}
42.Be5 {(c4) [%eval 0,72] [%emt 00:03:24]} Kd7 {(Kd7) [%eval 0,78] [%emt 00:03:05]}
43.c4 {(f4) [%eval 0,72] [%emt 00:00:53]} Ke6 {(Kc8) [%eval 0,81] [%emt 00:01:37]}
44.Bg3 {(f4) [%eval 0,70] [%emt 00:02:07]} f4 {(Kf6) [%eval 0,92] [%emt 00:01:46]}
45.Bxf4 {(Bxf4) [%eval 0,66] [%emt 00:01:03]} Kf5 {(Kd7) [%eval 0,93] [%emt 00:01:58]}
46.Be3 {(Be3) [%eval 0,69] [%emt 00:06:43]} e5 {(Ke4) [%eval 0,91] [%emt 00:03:00]}
47.Bd2 {(Ka5) [%eval 0,73] [%emt 00:01:17]} Ke4 {(Ke4) [%eval 0,245] [%emt 00:01:35]}
48.Bc1 {(Ka5) [%eval 0,71] [%emt 00:00:50]} Kd3 {(Kf3) [%eval 0,85] [%emt 00:01:43]}
49.a4 {(a4) [%eval 0,68] [%emt 00:02:44]} Kxc4 {(Bxa4) [%eval 0,82] [%emt 00:01:42]}
50.a5 {(Bg5) [%eval 0,69] [%emt 00:01:08]} Kd5 {(Kb4) [%eval 0,77] [%emt 00:01:27]}
51.Bb2 {(Be3) [%eval 0,67] [%emt 00:02:04]} Kc4 {(e4) [%eval 0,80] [%emt 00:02:13]}
52.Bxe5 {(Bc1) [%eval 2,63] [%emt 00:00:21]} Kd5 {(Bf3) [%eval 0,68] [%emt 00:01:39]}
53.Bg7 {(f4) [%eval 3,63] [%emt 00:00:22]} Ke6 {(Ke4) [%eval 0,72] [%emt 00:01:21]}
54.Ba1 {(Bd4) [%eval 3,63] [%emt 00:00:22]} Kd7 {(Kd5) [%eval 0,70] [%emt 00:03:06]}
55.Bf6 {(Bc3) [%eval 3,65] [%emt 00:01:00]} Kc8 {(Ke6) [%eval 0,77] [%emt 00:13:47]}
56.Bg7 {(Bd4) [%eval 3,63] [%emt 00:00:36]} Kd7 {(Kd7) [%eval 0,67] [%emt 00:00:23]}
57.Bf8 {(Bd4) [%eval 3,64] [%emt 00:00:32]} Ke8 {(Ke6) [%eval 0,75] [%emt 00:00:26]}
58.Bh6 {(Bh6) [%eval 3,65] [%emt 00:00:18]} Ke7 {(Kd7) [%eval 0,69] [%emt 00:00:33]}
59.Bd2 {(Kc7) [%eval 3,61] [%emt 00:00:41]} Kf6 {(Kf6) [%eval 0,68] [%emt 00:00:26]}
60.f4 {(Kc7) [%eval 3,63] [%emt 00:00:15]} Bh1 {(Ke6) [%eval 0,56] [%emt 00:00:25]}
61.Kc7 {(Be3) [%eval 3,55] [%emt 00:00:43]} Kg6 {(Bg2) [%eval 0,72] [%emt 00:00:29]}
62.Bc3 {(Bc3) [%eval 3,56] [%emt 00:00:30]} Kf5 {(Be4) [%eval 0,67] [%emt 00:00:27]}
63.Be5 {(Bd4) [%eval 3,55] [%emt 00:00:30]} Kg6 {(Bc6) [%eval 0,65] [%emt 00:00:26]}
64.Kb6 {(Kd8) [%eval 3,58] [%emt 00:00:29]} Bc6 {(Bg2) [%eval 0,64] [%emt 00:00:26]}
65.Bd4 {(f5) [%eval 3,49] [%emt 00:00:27]} Bh1 {(Bg2) [%eval 0,59] [%emt 00:00:26]}
66.Be3 {(c6) [%eval 3,56] [%emt 00:00:31]} Kf7 {(Kf5) [%eval 0,55] [%emt 00:00:26]}
67.Bc1 {(Bd4) [%eval 3,61] [%emt 00:00:22]} Bc6 {(Ke6) [%eval 0,64] [%emt 00:00:27]}
68.Bd2 {(f5) [%eval 3,60] [%emt 00:00:18]} Ke6 {(Bg2) [%eval 0,69] [%emt 00:00:50]}
69.Kc7 {(Bc3) [%eval 3,58] [%emt 00:00:29]} Be4 {(Kd5) [%eval 0,70] [%emt 00:00:26]}
70.Be3 {(Be3) [%eval 3,59] [%emt 00:00:49]}
1/2-1/2[/pgn]

[Graham Banks]

BIRD OPENING - The From Gambit

1. f4 e5 *

This strange-looking pawn sacrifice is more dangerous for white than it looks!
White almost exclusively plays 4. Nf3, but now the crazy-looking 4…g5 is the main line.
The threat is to kick the knight away, and deliver checkmate on g3.

https://chesspathways.com/chess-openings/bird-opening/

[Graham Banks]

GAME 21

Komodo Dragon played 3...Nf6 rather than the more usual 3...Bxd6, foregoing pressure against the kingside in favour of putting a positional clamp on the white position. The position after 22...Kg7 illustrates this.
Black was even happy to trade off queens and both rooks to go into a BN + pawns v BN + pawns endgame, still the gambit pawn down.
The game was drawn without any issues.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.12"]
[Round "11.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "10:38:45 am"]
[ECO "A02"]
[Opening "From's Gambit, Bird"]
[TimeControl "7200+30"]
[PlyCount "121"]
[Number "21"]
[Termination "GUI TB adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.f4 {[%eval 0,1] [%emt 00:00:00]} e5 {[%eval 0,1] [%emt 00:00:00]}
2.fxe5 {[%eval 73,43] [%emt 00:02:25]} d6 {(d6) [%eval -55,38] [%emt 00:02:59]}
3.exd6 {(Nf3) [%eval 75,45] [%emt 00:03:13]} Nf6 {(Bxd6) [%eval -74,39] [%emt 00:11:44]}
4.Nf3 {(Nc3) [%eval 65,46] [%emt 00:06:16]} Bxd6 {(Bxd6) [%eval -75,40] [%emt 00:02:31]}
5.g3 {(Nc3) [%eval 66,45] [%emt 00:01:15]} Nc6 {(c5) [%eval -80,39] [%emt 00:10:56]}
6.Bg2 {(Bg2) [%eval 58,46] [%emt 00:02:24]} Bg4 {(O-O) [%eval -75,40] [%emt 00:07:47]}
7.O-O {(O-O) [%eval 74,46] [%emt 00:01:48]} Qe7 {(Qe7) [%eval -58,41] [%emt 00:06:49]}
8.c3 {(c3) [%eval 66,47] [%emt 00:01:54]} O-O {(O-O) [%eval -67,40] [%emt 00:03:26]}
9.d4 {(Re1) [%eval 79,49] [%emt 00:11:39]} Rae8 {(Rae8) [%eval -68,37] [%emt 00:02:29]}
10.Re1 {(Re1) [%eval 52,53] [%emt 00:02:27]} h6 {(h6) [%eval -58,37] [%emt 00:02:05]}
11.Qd3 {(Qd3) [%eval 48,48] [%emt 00:01:55]} Qe6 {(Qe6) [%eval -80,38] [%emt 00:02:31]}
12.e3 {(e3) [%eval 49,47] [%emt 00:01:47]} Bf5 {(Bf5) [%eval -44,38] [%emt 00:04:00]}
13.Qf1 {(Qf1) [%eval 39,46] [%emt 00:03:10]} Ne4 {(Ne4) [%eval -59,39] [%emt 00:01:49]}
14.Nbd2 {(Nbd2) [%eval 68,46] [%emt 00:01:52]} Ne7 {(Ne7) [%eval -45,39] [%emt 00:02:19]}
15.a4 {(Nh4) [%eval 48,48] [%emt 00:08:15]} c6 {(c6) [%eval -61,39] [%emt 00:06:44]}
16.Nh4 {(a5) [%eval 46,48] [%emt 00:04:07]} Nxd2 {(Nxd2) [%eval -55,37] [%emt 00:02:45]}
17.Bxd2 {(Bxd2) [%eval 39,44] [%emt 00:01:14]} Be4 {(Be4) [%eval -38,41] [%emt 00:05:15]}
18.Bxe4 {(Bxe4) [%eval 32,46] [%emt 00:01:56]} Qxe4 {(Qxe4) [%eval -53,39] [%emt 00:01:41]}
19.Qf3 {(Rad1) [%eval 39,50] [%emt 00:02:00]} f5 {(f5) [%eval -43,38] [%emt 00:02:12]}
20.Rf1 {(Rf1) [%eval 35,50] [%emt 00:04:58]} g5 {(Kh7) [%eval -33,40] [%emt 00:01:36]}
21.Ng2 {(Ng2) [%eval 46,48] [%emt 00:01:57]} Kg7 {(Kg7) [%eval -25,44] [%emt 00:02:00]}
22.Rf2 {(Rf2) [%eval 23,51] [%emt 00:04:44]} Nd5 {(Nd5) [%eval -24,41] [%emt 00:01:19]}
23.Raf1 {(Qxe4) [%eval 22,51] [%emt 00:02:49]} Qc2 {(Qc2) [%eval -29,41] [%emt 00:01:40]}
24.Bc1 {(Bc1) [%eval 24,56] [%emt 00:01:37]} Qxa4 {(Qxa4) [%eval -23,41] [%emt 00:01:30]}
25.Qe2 {(Qe2) [%eval 22,55] [%emt 00:01:47]} Qb3 {(Qb3) [%eval -18,42] [%emt 00:01:23]}
26.Rxf5 {(Rxf5) [%eval 15,54] [%emt 00:01:53]} Rxf5 {(Rxf5) [%eval -20,45] [%emt 00:01:52]}
27.Rxf5 {(Rxf5) [%eval 8,54] [%emt 00:02:49]} Nf6 {(Nf6) [%eval -24,49] [%emt 00:01:28]}
28.Rf1 {(Rf1) [%eval 12,61] [%emt 00:04:14]} Ne4 {(Ne4) [%eval -23,48] [%emt 00:01:31]}
29.Qg4 {(Qg4) [%eval 0,59] [%emt 00:03:00]} Qe6 {(Qe6) [%eval -9,52] [%emt 00:01:34]}
30.Qxe6 {(Qxe6) [%eval 0,61] [%emt 00:01:38]} Rxe6 {(Rxe6) [%eval -8,54] [%emt 00:01:38]}
31.Ne1 {(Ne1) [%eval 0,68] [%emt 00:01:59]} Rf6 {(Rf6) [%eval -5,56] [%emt 00:01:43]}
32.Nd3 {(Nd3) [%eval 0,71] [%emt 00:01:41]} Rxf1 {(Rxf1) [%eval -5,55] [%emt 00:01:40]}
33.Kxf1 {(Kxf1) [%eval 0,71] [%emt 00:01:46]} Kg6 {(Kg6) [%eval -2,57] [%emt 00:02:33]}
34.g4 {(g4) [%eval 0,70] [%emt 00:03:04]} h5 {(h5) [%eval -2,59] [%emt 00:01:19]}
35.gxh5 {(gxh5) [%eval 0,72] [%emt 00:01:47]} Kxh5 {(Kxh5) [%eval 0,59] [%emt 00:02:17]}
36.Kg2 {(Kg2) [%eval 0,77] [%emt 00:01:35]} g4 {(g4) [%eval 0,64] [%emt 00:01:40]}
37.c4 {(c4) [%eval 0,73] [%emt 00:01:26]} a5 {(Kh4) [%eval 0,64] [%emt 00:01:26]}
38.c5 {(c5) [%eval 0,70] [%emt 00:01:26]} Bc7 {(Bc7) [%eval 0,67] [%emt 00:01:51]}
39.b3 {(Nf2) [%eval 0,70] [%emt 00:01:25]} Kg5 {(Kg5) [%eval 0,66] [%emt 00:02:06]}
40.h3 {(Nf2) [%eval 0,73] [%emt 00:01:37]} gxh3 {(b5) [%eval 0,67] [%emt 00:01:45]}
41.Kxh3 {(Kxh3) [%eval 0,76] [%emt 00:01:38]} b6 {(b5) [%eval 0,69] [%emt 00:03:33]}
42.Kg2 {(cxb6) [%eval 0,79] [%emt 00:01:27]} bxc5 {(Kf5) [%eval 0,71] [%emt 00:01:30]}
43.Nxc5 {(Nxc5) [%eval 0,96] [%emt 00:01:40]} Nxc5 {(Nxc5) [%eval 0,72] [%emt 00:09:05]}
44.dxc5 {(dxc5) [%eval 0,107] [%emt 00:01:13]} Kf5 {(Kf5) [%eval -11,68] [%emt 00:06:03]}
45.Kf3 {(Kf3) [%eval 0,110] [%emt 00:01:12]} Ke5 {(Ke5) [%eval 0,71] [%emt 00:00:39]}
46.e4 {(Bb2) [%eval 0,105] [%emt 00:01:17]} Kd4 {(Kd4) [%eval 0,72] [%emt 00:01:23]}
47.Bb2 {(Bd2) [%eval 0,96] [%emt 00:01:13]} Kxc5 {(Kxc5) [%eval 0,72] [%emt 00:02:26]}
48.Bc3 {(e5) [%eval 0,103] [%emt 00:01:57]} Kb5 {(Bd8) [%eval 0,70] [%emt 00:00:24]}
49.Be1 {(e5) [%eval 0,87] [%emt 00:01:21]} Kc5 {(Be5) [%eval 0,68] [%emt 00:00:56]}
50.Ke3 {(Bd2) [%eval 0,99] [%emt 00:01:15]} Kb5 {(Kb5) [%eval 0,71] [%emt 00:01:03]}
51.Kd3 {(Bc3) [%eval 0,79] [%emt 00:01:07]} Bb6 {(c5) [%eval 0,71] [%emt 00:00:39]}
52.Kc2 {(Kc2) [%eval 0,245] [%emt 00:05:50]} Bd8 {(Bd4) [%eval 0,67] [%emt 00:00:54]}
53.Kb1 {(Kd3) [%eval 0,81] [%emt 00:00:58]} Bb6 {(Be7) [%eval 0,73] [%emt 00:00:15]}
54.Ka2 {(Kc2) [%eval 0,80] [%emt 00:00:58]} Bc5 {(Bc7) [%eval 0,71] [%emt 00:00:20]}
55.Bh4 {(e5) [%eval 0,95] [%emt 00:03:05]} Bd6 {(Bb4) [%eval 0,70] [%emt 00:00:22]}
56.Bf6 {(Bf2) [%eval 0,77] [%emt 00:01:05]} c5 {(Bc7) [%eval 0,66] [%emt 00:00:20]}
57.e5 {(Kb2) [%eval 0,80] [%emt 00:01:20]} Bf8 {(Bc7) [%eval 0,79] [%emt 00:01:11]}
58.Bd8 {(e6) [%eval 0,123] [%emt 00:00:59]} c4 {(c4) [%eval 0,79] [%emt 00:00:31]}
59.bxc4 {(bxc4) [%eval 0,148] [%emt 00:00:56]} Kxc4 {(Kxc4) [%eval 0,77] [%emt 00:00:30]}
60.e6 {(Bxa5) [%eval 0,148] [%emt 00:00:56]} Be7 {(Kb4) [%eval 0,86] [%emt 00:00:29]}
61.Bxa5 {(Bxe7) [%eval 0,191] [%emt 00:00:53]}
1/2-1/2[/pgn]

[Graham Banks]

GAME 22

This was a fascinating game.
Stockfish played the more usual 3...Bxd6 instead of Komodo Dragon's choice 3...Nf6, but following white's 4. Nf3, chose not to follow it up with the more fashionable 4...g5.
Stockfish was quick to castle kingside, but Komodo Dragon opted for a big pawn centre, which meant giving up castling rights. with the need to play 10. Ke2 in response to the cunning 9...Ng4.
Stockfish understandably started to build up pressure on Komodo Dragon's king, but 25. Bxf5 initiated a series of exchanges that neutralised the position, and a threefold repetition followed shortly afterwards.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.12"]
[Round "11.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "3:30:29 pm"]
[ECO "A02"]
[Opening "From's Gambit, Bird"]
[TimeControl "7200+30"]
[PlyCount "73"]
[Number "22"]
[Termination "3-fold rep"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.f4 {[%eval 0,1] [%emt 00:00:00]} e5 {[%eval 0,1] [%emt 00:00:00]}
2.fxe5 {[%eval 75,35] [%emt 00:01:37]} d6 {(d6) [%eval -58,45] [%emt 00:03:12]}
3.exd6 {(exd6) [%eval 67,42] [%emt 00:11:53]} Bxd6 {(Bxd6) [%eval -55,49] [%emt 00:07:42]}
4.Nf3 {(Nf3) [%eval 66,39] [%emt 00:02:28]} Nf6 {(Nf6) [%eval -66,44] [%emt 00:03:51]}
5.Nc3 {(g3) [%eval 75,40] [%emt 00:06:43]} Nc6 {(Nc6) [%eval -47,46] [%emt 00:03:25]}
6.e4 {(e3) [%eval 56,42] [%emt 00:05:27]} O-O {(O-O) [%eval -37,47] [%emt 00:02:38]}
7.Bb5 {(Bb5) [%eval 65,40] [%emt 00:02:13]} Ne5 {(Ne5) [%eval -34,48] [%emt 00:02:13]}
8.d4 {(d4) [%eval 62,41] [%emt 00:02:17]} Nxf3 {(Nxf3) [%eval -41,47] [%emt 00:03:32]}
9.gxf3 {(gxf3) [%eval 56,39] [%emt 00:04:51]} Ng4 {(Ng4) [%eval -36,45] [%emt 00:01:48]}
10.Ke2 {(Ke2) [%eval 56,41] [%emt 00:03:59]} a6 {(a6) [%eval -41,48] [%emt 00:01:55]}
11.Bd3 {(Bd3) [%eval 61,40] [%emt 00:06:07]} c5 {(c5) [%eval -28,46] [%emt 00:02:08]}
12.Qg1 {(Qg1) [%eval 58,39] [%emt 00:02:14]} cxd4 {(cxd4) [%eval -37,47] [%emt 00:02:58]}
13.Qxd4 {(Qxd4) [%eval 34,41] [%emt 00:02:27]} Kh8 {(Kh8) [%eval -25,42] [%emt 00:02:04]}
14.f4 {(f4) [%eval 43,43] [%emt 00:02:22]} f6 {(Qe7) [%eval -24,45] [%emt 00:04:23]}
15.h3 {(h3) [%eval 41,36] [%emt 00:04:06]} Nh6 {(Nh6) [%eval -27,44] [%emt 00:02:24]}
16.Bd2 {(Bd2) [%eval 45,37] [%emt 00:07:34]} Be6 {(Be6) [%eval -13,40] [%emt 00:03:04]}
17.Rae1 {(Qf2) [%eval 27,36] [%emt 00:03:02]} Qc7 {(Qc7) [%eval -16,41] [%emt 00:01:58]}
18.Qe3 {(Qf2) [%eval 19,38] [%emt 00:09:24]} Bc5 {(Bc5) [%eval -9,43] [%emt 00:02:07]}
19.Qg3 {(Qf3) [%eval 5,33] [%emt 00:01:21]} Rad8 {(f5) [%eval 0,245] [%emt 00:02:56]}
20.Rh2 {(Kd1) [%eval 19,41] [%emt 00:03:40]} f5 {(f5) [%eval 0,51] [%emt 00:04:01]}
21.Kd1 {(Kd1) [%eval 5,40] [%emt 00:01:22]} fxe4 {(fxe4) [%eval 0,62] [%emt 00:02:19]}
22.Nxe4 {(Nxe4) [%eval 12,41] [%emt 00:01:17]} Bd4 {(Bd4) [%eval 0,59] [%emt 00:03:28]}
23.Ng5 {(Ng5) [%eval 0,45] [%emt 00:01:08]} Bg8 {(Bg8) [%eval 0,63] [%emt 00:01:57]}
24.b3 {(Kc1) [%eval 0,48] [%emt 00:01:26]} Nf5 {(Nf5) [%eval 0,60] [%emt 00:02:01]}
25.Bxf5 {(Bxf5) [%eval 0,49] [%emt 00:01:56]} Rxf5 {(Rxf5) [%eval 0,65] [%emt 00:02:23]}
26.Ne6 {(Ne6) [%eval 0,52] [%emt 00:01:35]} Bxe6 {(Bxe6) [%eval 0,69] [%emt 00:02:33]}
27.Rxe6 {(Rxe6) [%eval 0,55] [%emt 00:01:41]} Rf6 {(Rf6) [%eval 0,69] [%emt 00:05:42]}
28.Rxf6 {(Rxf6) [%eval 0,56] [%emt 00:01:14]} Bxf6 {(Bxf6) [%eval 0,68] [%emt 00:03:28]}
29.Re2 {(Re2) [%eval 0,57] [%emt 00:02:44]} Qd7 {(h6) [%eval 0,69] [%emt 00:02:57]}
30.Qd3 {(Qe1) [%eval 0,52] [%emt 00:01:18]} Qc6 {(Qc6) [%eval 0,71] [%emt 00:01:43]}
31.Qe3 {(Qe3) [%eval 0,56] [%emt 00:01:28]} b6 {(h6) [%eval 0,66] [%emt 00:01:54]}
32.Kc1 {(Kc1) [%eval 0,53] [%emt 00:01:49]} h6 {(h6) [%eval 0,72] [%emt 00:02:32]}
33.Qe4 {(Re1) [%eval 0,56] [%emt 00:01:25]} Qd6 {(Qd7) [%eval 0,67] [%emt 00:02:08]}
34.Qb4 {(Qb4) [%eval 0,60] [%emt 00:01:52]} Qc6 {(Qc6) [%eval 0,68] [%emt 00:03:06]}
35.Qe4 {(Qe4) [%eval 0,61] [%emt 00:01:19]} Qd6 {(Qd7) [%eval 0,70] [%emt 00:04:47]}
36.Qb4 {(Qb4) [%eval 0,64] [%emt 00:02:25]} Qc6 {(Qc6) [%eval 0,79] [%emt 00:01:52]}
37.Qe4 {(Qe4) [%eval 0,67] [%emt 00:05:02]}
1/2-1/2[/pgn]

[Graham Banks]

The Two Knights Defence

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 *

With 5...Na5, Black counterattacks against the bishop on c4. The main downside of this continuation is that Black's knight can end up largely shut out of play on a5, but the upside is that Black can usually accumulate a large lead in development by kicking the g5-knight away with ...h7-h6, and playing active developing moves. Black will then try to force concessions from White through active piece play, and in some lines can consider launching a kingside pawn storm during the middlegame. However, White can generally maintain the extra pawn, which leaves the chances dynamically equal in most cases.

White can consider 6.d3, defending the bishop on c4, but this doesn't offer White much after 6...h6 7.Nf3 e4. The usual continuation is 6.Bb5+ c6 7.dxc6 bxc6, whereupon White can pin Black's c6-pawn with 8.Qf3, but Black has three strong responses in 8...Rb8, 8...Be7 and 8...h6. 8.Bd3!? has been tried at grandmaster level in recent years, with the idea of playing c3 and Bc2 (then Mark Ginsburg's recommendation 8...Ng4 is a strong reply), but the main line is 8.Be2 h6 and then White chooses between 9.Nh3 (after which Black should generally avoid the temptation to play ...Bxh3, as White can shore up the kingside using the light-squared bishop, and should instead play around the knight) and 9.Nf3. The traditional main line then continues 9...e4 10.Ne5 Bd6 11.d4 exd3 12.Nxd3 Qc7.

https://www.ianchessgambits.com/two-kni ... -line.html

[Graham Banks]

GAME 23

Komodo Dragon offered up a second pawn, which Stockfish took.
Although both sides evaluated the position after 13...g5 as 0.00, it looks to the human eye as though white is in for tough times.
However, the Stockfish plan was to give up a knight for a further pawn, and then attack the queenside with a pawn storm. The position after 22...a4 certainly looked more tenable for Stockfish.
After the ensuing mass exchanges, an endgame arose in which Stockfish initially only had two pawns for the minor piece, and although some of the black pawns were ripe for the picking, after 58...Ra8, things had settled, with white having the only three pawns on the board.
However, neither engine had seen any advantage for either side pretty much throughout, and the end result was another draw.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.12"]
[Round "12.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "7:10:00 pm"]
[ECO "C58"]
[Opening "Polerio Defense, Two Knights; C58"]
[TimeControl "7200+30"]
[PlyCount "148"]
[Number "23"]
[Termination "GUI TB 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.Nf3 {[%eval 0,1] [%emt 00:00:00]} Nc6 {[%eval 0,1] [%emt 00:00:00]}
3.Bc4 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
4.Ng5 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
5.exd5 {[%eval 0,1] [%emt 00:00:00]} Na5 {[%eval 0,1] [%emt 00:00:00]}
6.Bb5 {[%eval 31,48] [%emt 00:03:19]} c6 {(c6) [%eval 0,37] [%emt 00:03:00]}
7.dxc6 {(dxc6) [%eval 28,49] [%emt 00:02:05]} bxc6 {(bxc6) [%eval 0,41] [%emt 00:02:56]}
8.Bd3 {(Bd3) [%eval 15,50] [%emt 00:02:44]} Nd5 {(Nd5) [%eval -11,38] [%emt 00:03:45]}
9.Nf3 {(Nf3) [%eval 4,51] [%emt 00:02:19]} Bd6 {(Bd6) [%eval -16,39] [%emt 00:05:45]}
10.O-O {(Nc3) [%eval 0,57] [%emt 00:02:18]} O-O {(Nf4) [%eval 0,42] [%emt 00:02:27]}
11.Re1 {(Re1) [%eval 0,59] [%emt 00:05:03]} f5 {(f5) [%eval 0,43] [%emt 00:02:48]}
12.Nxe5 {(Nxe5) [%eval 0,56] [%emt 00:01:58]} Qf6 {(Qf6) [%eval 0,45] [%emt 00:03:04]}
13.Nf3 {(Nf3) [%eval 0,57] [%emt 00:03:51]} g5 {(g5) [%eval 0,46] [%emt 00:02:49]}
14.c4 {(c4) [%eval 0,58] [%emt 00:02:35]} Nf4 {(Nf4) [%eval 0,47] [%emt 00:02:35]}
15.Bf1 {(Bf1) [%eval 0,58] [%emt 00:02:22]} g4 {(g4) [%eval 0,48] [%emt 00:02:31]}
16.d4 {(d4) [%eval 0,60] [%emt 00:02:23]} gxf3 {(gxf3) [%eval 0,48] [%emt 00:04:30]}
17.Qxf3 {(Qxf3) [%eval 0,61] [%emt 00:02:10]} Ne6 {(Ne6) [%eval 0,49] [%emt 00:03:29]}
18.Qc3 {(Qc3) [%eval 0,60] [%emt 00:02:11]} Nb7 {(Nb7) [%eval 0,49] [%emt 00:02:36]}
19.c5 {(c5) [%eval 0,61] [%emt 00:03:18]} Bc7 {(Bc7) [%eval 0,51] [%emt 00:02:44]}
20.b4 {(b4) [%eval 0,56] [%emt 00:02:27]} a5 {(a5) [%eval 0,51] [%emt 00:03:28]}
21.b5 {(a3) [%eval 0,59] [%emt 00:02:07]} cxb5 {(cxb5) [%eval 0,43] [%emt 00:02:08]}
22.Bxb5 {(Bxb5) [%eval 0,58] [%emt 00:02:43]} a4 {(a4) [%eval 13,44] [%emt 00:07:33]}
23.Bc4 {(Bc4) [%eval 0,60] [%emt 00:02:38]} Na5 {(Na5) [%eval 6,43] [%emt 00:02:40]}
24.Bd5 {(Bd5) [%eval 0,60] [%emt 00:02:36]} Rb8 {(Rb8) [%eval 0,46] [%emt 00:01:48]}
25.Na3 {(Qe3) [%eval 0,60] [%emt 00:02:58]} Rd8 {(Rd8) [%eval 4,45] [%emt 00:01:36]}
26.Bg5 {(Bxe6) [%eval 0,60] [%emt 00:03:14]} Qxg5 {(Qxg5) [%eval 7,46] [%emt 00:01:59]}
27.Bxe6 {(Bxe6) [%eval 0,62] [%emt 00:04:47]} Bxe6 {(Bxe6) [%eval 5,50] [%emt 00:03:09]}
28.Rxe6 {(Rxe6) [%eval 0,62] [%emt 00:02:10]} Qh4 {(Qf4) [%eval 9,47] [%emt 00:02:01]}
29.g3 {(g3) [%eval 0,63] [%emt 00:03:55]} Qxd4 {(Qxd4) [%eval 0,52] [%emt 00:02:04]}
30.Qe1 {(Qe1) [%eval 0,63] [%emt 00:04:21]} Qb4 {(Qb4) [%eval 0,54] [%emt 00:01:59]}
31.Qe2 {(Qe2) [%eval 0,66] [%emt 00:02:38]} Qg4 {(Qg4) [%eval 0,54] [%emt 00:04:58]}
32.Qe1 {(Qe1) [%eval 0,67] [%emt 00:01:54]} Rf8 {(f4) [%eval 2,55] [%emt 00:04:45]}
33.Re7 {(Re7) [%eval 0,60] [%emt 00:02:12]} Rf7 {(Rf7) [%eval 0,54] [%emt 00:01:55]}
34.Re8 {(Re8) [%eval 0,69] [%emt 00:02:02]} Rxe8 {(Rxe8) [%eval 0,58] [%emt 00:02:31]}
35.Qxe8 {(Qxe8) [%eval 0,70] [%emt 00:02:28]} Kg7 {(Rf8) [%eval 3,54] [%emt 00:03:42]}
36.Nb5 {(Nb5) [%eval 0,69] [%emt 00:02:38]} Qe4 {(Qe4) [%eval 3,58] [%emt 00:01:46]}
37.Qxe4 {(Re1) [%eval 0,68] [%emt 00:01:54]} fxe4 {(fxe4) [%eval 3,53] [%emt 00:01:45]}
38.Rc1 {(Rc1) [%eval 0,72] [%emt 00:01:53]} Nb7 {(Nc6) [%eval 3,54] [%emt 00:01:26]}
39.Rc4 {(Rc4) [%eval 0,47] [%emt 00:01:51]} Bb8 {(Bb8) [%eval 2,54] [%emt 00:02:20]}
40.Nc3 {(c6) [%eval 0,61] [%emt 00:01:49]} e3 {(e3) [%eval 2,50] [%emt 00:02:30]}
41.fxe3 {(fxe3) [%eval 0,64] [%emt 00:02:02]} a3 {(a3) [%eval 3,56] [%emt 00:02:01]}
42.Nb5 {(Nb5) [%eval 0,65] [%emt 00:11:02]} Rf8 {(Rf8) [%eval 0,53] [%emt 00:01:50]}
43.Rc2 {(Nxa3) [%eval 0,64] [%emt 00:02:38]} Rc8 {(Rc8) [%eval 5,51] [%emt 00:01:34]}
44.c6 {(c6) [%eval 0,65] [%emt 00:07:29]} Nd6 {(Nd6) [%eval 2,53] [%emt 00:02:02]}
45.Nxa3 {(Nxa3) [%eval 0,66] [%emt 00:02:10]} Ba7 {(Ba7) [%eval 1,54] [%emt 00:02:40]}
46.Kf2 {(Kf2) [%eval 0,67] [%emt 00:01:30]} Kf6 {(Kf6) [%eval 0,59] [%emt 00:01:40]}
47.c7 {(c7) [%eval 0,59] [%emt 00:02:00]} Ke7 {(Ke6) [%eval 0,61] [%emt 00:01:27]}
48.Kf3 {(Ke2) [%eval 0,64] [%emt 00:02:53]} Bb6 {(Bb6) [%eval 1,50] [%emt 00:02:41]}
49.g4 {(Nb5) [%eval 0,57] [%emt 00:01:00]} Bxc7 {(Bxc7) [%eval 1,51] [%emt 00:02:22]}
50.Rc5 {(Rc5) [%eval 0,63] [%emt 00:01:04]} Rf8 {(Kd7) [%eval 0,52] [%emt 00:02:53]}
51.Ke2 {(Ke2) [%eval 0,56] [%emt 00:01:06]} Bb6 {(Bb8) [%eval 0,58] [%emt 00:01:25]}
52.Rh5 {(Rh5) [%eval 0,60] [%emt 00:01:10]} Ra8 {(Rf7) [%eval 0,61] [%emt 00:01:50]}
53.Rxh7 {(Rxh7) [%eval 0,64] [%emt 00:01:05]} Nf7 {(Nf7) [%eval 0,63] [%emt 00:01:22]}
54.Nc2 {(Nc4) [%eval 0,69] [%emt 00:00:59]} Rxa2 {(Rxa2) [%eval 2,49] [%emt 00:01:45]}
55.Kd3 {(Kd1) [%eval 0,77] [%emt 00:01:07]} Kf6 {(Kf6) [%eval 0,45] [%emt 00:00:51]}
56.h3 {(h3) [%eval 0,82] [%emt 00:01:18]} Ne5 {(Ra5) [%eval 0,55] [%emt 00:01:00]}
57.Kc3 {(Kc3) [%eval 0,70] [%emt 00:01:07]} Bd8 {(Bc5) [%eval 0,59] [%emt 00:01:00]}
58.Kb3 {(Kb3) [%eval 0,61] [%emt 00:01:01]} Ra8 {(Ra8) [%eval 0,60] [%emt 00:00:58]}
59.Nd4 {(Nd4) [%eval 0,68] [%emt 00:01:11]} Nf7 {(Rb8) [%eval 0,61] [%emt 00:00:58]}
60.Rh5 {(Nf5) [%eval 0,88] [%emt 00:00:54]} Rc8 {(Ra5) [%eval 1,50] [%emt 00:00:52]}
61.e4 {(e4) [%eval 0,73] [%emt 00:01:01]} Bb6 {(Ng5) [%eval 0,53] [%emt 00:00:49]}
62.Nf3 {(e5) [%eval 0,68] [%emt 00:00:51]} Be3 {(Kg7) [%eval 0,50] [%emt 00:00:43]}
63.Rf5 {(h4) [%eval 0,64] [%emt 00:00:50]} Ke6 {(Ke6) [%eval 0,46] [%emt 00:00:42]}
64.e5 {(Rd5) [%eval 0,75] [%emt 00:00:50]} Nh6 {(Rc5) [%eval 0,54] [%emt 00:01:04]}
65.Rf6 {(Rf6) [%eval 0,68] [%emt 00:00:44]} Kd5 {(Kd5) [%eval 0,59] [%emt 00:00:46]}
66.Nh4 {(g5) [%eval 0,69] [%emt 00:00:39]} Kxe5 {(Kxe5) [%eval 1,44] [%emt 00:01:19]}
67.Rf8 {(Rf8) [%eval 0,80] [%emt 00:00:41]} Rxf8 {(Rxf8) [%eval 0,53] [%emt 00:00:51]}
68.Ng6 {(Ng6) [%eval 0,98] [%emt 00:00:45]} Kd5 {(Ke6) [%eval 0,64] [%emt 00:00:55]}
69.Nxf8 {(Nxf8) [%eval 0,103] [%emt 00:00:46]} Bg5 {(Nxg4) [%eval 0,66] [%emt 00:00:41]}
70.Kc2 {(Ng6) [%eval 0,98] [%emt 00:00:36]} Nf7 {(Nxg4) [%eval 0,67] [%emt 00:00:52]}
71.h4 {(Ng6) [%eval 0,103] [%emt 00:00:38]} Bxh4 {(Ne5) [%eval 0,66] [%emt 00:01:49]}
72.Ng6 {(Ng6) [%eval 0,119] [%emt 00:00:40]} Ne5 {(Ke4) [%eval 0,71] [%emt 00:04:05]}
73.Nf4 {(Nxh4) [%eval 0,132] [%emt 00:00:54]} Ke4 {(Ke4) [%eval 0,67] [%emt 00:00:45]}
74.Ne6 {(Ne6) [%eval 0,131] [%emt 00:00:49]} Nxg4 {(Nxg4) [%eval 0,66] [%emt 00:00:36]}
1/2-1/2[/pgn]

[Graham Banks]

GAME 24

Although both engines had decided upon 8. Bd3 as being the preferred continuation, this game developed differently.
When Stockfish played 13...Nxc3 and followed it up with 14...e4, lines began opening up towards the white kingside.
However, Komodo Dragon had things under control, and following mass exchanges, the position after 38... Ne4 gave a dead drawn endgame.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.13"]
[Round "12.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "12:14:09 am"]
[ECO "C58"]
[Opening "Polerio Defense, Two Knights; C58"]
[TimeControl "7200+30"]
[PlyCount "122"]
[Number "24"]
[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.Nf3 {[%eval 0,1] [%emt 00:00:00]} Nc6 {[%eval 0,1] [%emt 00:00:00]}
3.Bc4 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
4.Ng5 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
5.exd5 {[%eval 0,1] [%emt 00:00:00]} Na5 {[%eval 0,1] [%emt 00:00:00]}
6.Bb5 {[%eval 19,34] [%emt 00:01:37]} c6 {(c6) [%eval 0,51] [%emt 00:05:20]}
7.dxc6 {(dxc6) [%eval 0,37] [%emt 00:03:20]} bxc6 {(bxc6) [%eval -2,52] [%emt 00:02:29]}
8.Bd3 {(Bd3) [%eval 25,38] [%emt 00:03:33]} Nd5 {(Nd5) [%eval 0,57] [%emt 00:02:07]}
9.Nf3 {(Nf3) [%eval 0,43] [%emt 00:02:20]} Bd6 {(Bd6) [%eval 0,57] [%emt 00:01:59]}
10.Nc3 {(O-O) [%eval 0,45] [%emt 00:02:22]} O-O {(Nf4) [%eval 0,45] [%emt 00:02:37]}
11.Be2 {(Be2) [%eval 31,35] [%emt 00:03:07]} Qc7 {(Qc7) [%eval -10,49] [%emt 00:07:36]}
12.d3 {(d3) [%eval 19,36] [%emt 00:02:20]} f5 {(f5) [%eval 0,48] [%emt 00:01:48]}
13.O-O {(Bd2) [%eval 21,40] [%emt 00:05:40]} Nxc3 {(Nxc3) [%eval 0,52] [%emt 00:02:23]}
14.bxc3 {(bxc3) [%eval 11,42] [%emt 00:02:17]} e4 {(e4) [%eval -5,56] [%emt 00:03:12]}
15.dxe4 {(dxe4) [%eval 15,44] [%emt 00:02:27]} fxe4 {(fxe4) [%eval -1,54] [%emt 00:02:09]}
16.Ng5 {(Ng5) [%eval 11,47] [%emt 00:05:15]} Bf5 {(Bf5) [%eval -9,56] [%emt 00:02:04]}
17.Bg4 {(Bg4) [%eval 2,43] [%emt 00:02:27]} Bxh2 {(Bxh2) [%eval 0,58] [%emt 00:03:54]}
18.Kh1 {(Kh1) [%eval 2,5] [%emt 00:00:00]} Be5 {(Be5) [%eval 0,61] [%emt 00:03:10]}
19.Bxf5 {(Bxf5) [%eval 5,45] [%emt 00:02:41]} Rxf5 {(Rxf5) [%eval 0,65] [%emt 00:02:09]}
20.Nxe4 {(Nxe4) [%eval 1,46] [%emt 00:04:37]} Raf8 {(Raf8) [%eval 0,64] [%emt 00:02:01]}
21.Ba3 {(Ba3) [%eval 2,49] [%emt 00:02:20]} Qf7 {(Qf7) [%eval 0,63] [%emt 00:02:33]}
22.Kg1 {(Kg1) [%eval 1,53] [%emt 00:03:19]} Re8 {(Re8) [%eval 0,63] [%emt 00:02:57]}
23.Re1 {(Re1) [%eval 2,53] [%emt 00:03:14]} Nc4 {(Nc4) [%eval 0,65] [%emt 00:02:46]}
24.Bc5 {(Bc5) [%eval 0,53] [%emt 00:06:41]} Bxc3 {(Bxc3) [%eval 0,63] [%emt 00:02:30]}
25.Nxc3 {(Nxc3) [%eval 0,58] [%emt 00:02:03]} Rxc5 {(Rxc5) [%eval 0,62] [%emt 00:02:08]}
26.Rxe8 {(Rxe8) [%eval 0,58] [%emt 00:02:15]} Qxe8 {(Qxe8) [%eval 0,61] [%emt 00:02:09]}
27.Rb1 {(Rb1) [%eval 0,58] [%emt 00:05:33]} h6 {(Re5) [%eval 0,62] [%emt 00:02:01]}
28.Qd4 {(Qd3) [%eval 0,55] [%emt 00:01:57]} Qe5 {(Qe5) [%eval 0,65] [%emt 00:04:09]}
29.Rb8 {(Rb8) [%eval 0,59] [%emt 00:02:11]} Kh7 {(Kh7) [%eval 0,73] [%emt 00:05:10]}
30.Qd3 {(Qd3) [%eval 0,61] [%emt 00:03:40]} Qf5 {(Qf5) [%eval 0,73] [%emt 00:03:34]}
31.Ne2 {(Qxf5) [%eval 0,63] [%emt 00:04:39]} Qxd3 {(Qxd3) [%eval 0,68] [%emt 00:02:08]}
32.cxd3 {(cxd3) [%eval 0,65] [%emt 00:02:01]} Nd6 {(Ne5) [%eval 0,67] [%emt 00:02:18]}
33.g3 {(Rd8) [%eval 0,54] [%emt 00:01:33]} Rc2 {(Ra5) [%eval 0,65] [%emt 00:01:42]}
34.Nd4 {(Nd4) [%eval 0,65] [%emt 00:02:01]} Rxa2 {(Rxa2) [%eval 0,73] [%emt 00:01:57]}
35.Nxc6 {(Nxc6) [%eval 0,65] [%emt 00:03:28]} a5 {(a5) [%eval 0,74] [%emt 00:02:14]}
36.Ra8 {(Kg2) [%eval 0,64] [%emt 00:02:22]} Ra3 {(Ra3) [%eval 0,73] [%emt 00:01:48]}
37.Rxa5 {(Ne5) [%eval 0,65] [%emt 00:02:30]} Rxd3 {(Rxa5) [%eval 0,77] [%emt 00:02:35]}
38.Ra1 {(Kg2) [%eval 0,65] [%emt 00:01:48]} Ne4 {(Rd2) [%eval 0,86] [%emt 00:01:53]}
39.Ne5 {(Ra4) [%eval 0,69] [%emt 00:03:12]} Rd2 {(Rd2) [%eval 0,79] [%emt 00:01:38]}
40.Rf1 {(Rf1) [%eval 0,68] [%emt 00:03:02]} Re2 {(Nd6) [%eval 0,80] [%emt 00:01:32]}
41.Nd3 {(Nd3) [%eval 0,66] [%emt 00:04:57]} Rc2 {(h5) [%eval 0,76] [%emt 00:01:30]}
42.Ra1 {(Re1) [%eval 0,67] [%emt 00:02:03]} Rd2 {(Nd2) [%eval 0,78] [%emt 00:01:49]}
43.Ra3 {(Ra3) [%eval 0,67] [%emt 00:01:45]} Rd1 {(Rd1) [%eval 0,81] [%emt 00:01:46]}
44.Kg2 {(Kg2) [%eval 0,67] [%emt 00:05:06]} Nf6 {(Rd2) [%eval 0,81] [%emt 00:01:32]}
45.Ne5 {(Nf4) [%eval 0,67] [%emt 00:03:27]} Rd2 {(Ne4) [%eval 0,80] [%emt 00:01:30]}
46.Nf3 {(Ra5) [%eval 0,67] [%emt 00:04:21]} Rd5 {(Rd5) [%eval 0,72] [%emt 00:01:32]}
47.Re3 {(Nh4) [%eval 0,66] [%emt 00:01:19]} Rd8 {(h5) [%eval 0,75] [%emt 00:01:25]}
48.Ne5 {(Re2) [%eval 0,69] [%emt 00:02:46]} Rc8 {(Rd5) [%eval 0,77] [%emt 00:01:23]}
49.Ra3 {(Nf3) [%eval 0,66] [%emt 00:04:05]} Rc2 {(Rc2) [%eval 0,80] [%emt 00:01:38]}
50.Ra5 {(Ra5) [%eval 0,67] [%emt 00:03:15]} Rd2 {(Rc1) [%eval 0,81] [%emt 00:01:38]}
51.Ra7 {(Nf3) [%eval 0,67] [%emt 00:00:35]} Ne4 {(Ne4) [%eval 0,75] [%emt 00:01:27]}
52.Rf7 {(Kf3) [%eval 0,66] [%emt 00:00:36]} Kg8 {(Nf6) [%eval 0,73] [%emt 00:01:32]}
53.Rf4 {(Rf4) [%eval 0,65] [%emt 00:00:47]} Nf6 {(Ng5) [%eval 0,80] [%emt 00:01:39]}
54.Ng6 {(Nc4) [%eval 0,67] [%emt 00:00:40]} Kh7 {(Kh7) [%eval 0,68] [%emt 00:01:34]}
55.Nf8 {(Nh4) [%eval 0,70] [%emt 00:00:42]} Kh8 {(Kg8) [%eval 0,82] [%emt 00:01:48]}
56.Ng6 {(Rh4) [%eval 0,68] [%emt 00:01:13]} Kg8 {(Kg8) [%eval 0,77] [%emt 00:01:30]}
57.Ne7 {(Rh4) [%eval 0,66] [%emt 00:00:25]} Kh7 {(Kh7) [%eval 0,79] [%emt 00:01:28]}
58.Nc6 {(Nc6) [%eval 0,66] [%emt 00:00:34]} Nd5 {(Nd5) [%eval 0,78] [%emt 00:01:21]}
59.Ra4 {(Rf3) [%eval 0,52] [%emt 00:00:29]} Ne3 {(Rd1) [%eval 0,86] [%emt 00:01:27]}
60.Kg1 {(Kg1) [%eval 0,61] [%emt 00:00:24]} Rd1 {(Nd1) [%eval 0,82] [%emt 00:01:27]}
61.Kh2 {(Kh2) [%eval 0,5] [%emt 00:00:00]} Nd5 {(Rd2) [%eval 0,90] [%emt 00:01:47]}
1/2-1/2[/pgn]

[Graham Banks]

Evans Gambit

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4 b4 *

The Evans Gambit is an aggressive line of the Giuoco Piano. White offers a pawn to divert the black bishop on c5. If Black accepts, White can follow up with c3 and d4, ripping open the centre, while also opening diagonals to play Ba3 or Qb3 at some point, preventing Black from castling kingside and threatening the f7-pawn respectively. If Black declines, the b4-pawn stakes out space on the queenside, and White can follow up with a4 later in the game, potentially gaining a tempo by threatening to trap Black's dark-square bishop. According to Reuben Fine, the Evans Gambit poses a challenge for Black since the usual defences (play ...d6 and/or give back the gambit pawn) are more difficult to pull off than with other gambits.

https://en.wikipedia.org/wiki/Evans_Gambit

[Graham Banks]

GAME 25

Komodo Dragon preferred the 5...Ba5 continuation, and shortly afterwards, gave the gambit pawn back. Both engines already evaluated the game as 0.00.
Following a re-arrangement of their pieces, Stockfish eyed up the black king, while Komodo Dragon was working the queenside.
After 26...a4, a tactical melee erupted, and when the smoke had cleared, Stockfish emerged with queen, rook and five pawns against queen, bishop, knight and four pawns. White had a passed e-pawn, while black had a passed a-pawn.
The queens and both passed pawns then came off the board, and once all of the kingside pawns had been exchanged as well, the game petered out into a draw.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.13"]
[Round "13.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "4:46:54 am"]
[ECO "C52"]
[Opening "Tartakower Attack, Evans"]
[TimeControl "7200+30"]
[PlyCount "136"]
[Number "25"]
[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.Nf3 {[%eval 0,1] [%emt 00:00:00]} Nc6 {[%eval 0,1] [%emt 00:00:00]}
3.Bc4 {[%eval 0,1] [%emt 00:00:00]} Bc5 {[%eval 0,1] [%emt 00:00:00]}
4.b4 {[%eval 0,1] [%emt 00:00:00]} Bxb4 {[%eval 27,38] [%emt 00:01:46]}
5.c3 {(c3) [%eval 0,56] [%emt 00:06:09]} Ba5 {(Ba5) [%eval 0,40] [%emt 00:03:15]}
6.d4 {(d4) [%eval 0,57] [%emt 00:02:00]} d6 {(d6) [%eval 16,43] [%emt 00:05:39]}
7.Qb3 {(Qb3) [%eval 0,57] [%emt 00:02:41]} Qd7 {(Qd7) [%eval 6,42] [%emt 00:05:16]}
8.O-O {(O-O) [%eval -2,50] [%emt 00:01:55]} Bb6 {(Bb6) [%eval 0,41] [%emt 00:05:01]}
9.Nbd2 {(Nbd2) [%eval 0,53] [%emt 00:02:44]} Na5 {(Na5) [%eval 0,41] [%emt 00:02:09]}
10.Qc2 {(Qc2) [%eval -4,52] [%emt 00:02:43]} Ne7 {(Ne7) [%eval 0,42] [%emt 00:04:18]}
11.dxe5 {(dxe5) [%eval 0,53] [%emt 00:02:31]} Ng6 {(Ng6) [%eval 0,48] [%emt 00:02:49]}
12.exd6 {(exd6) [%eval 0,55] [%emt 00:01:56]} Qxd6 {(Qxd6) [%eval 0,45] [%emt 00:01:40]}
13.Rd1 {(e5) [%eval 0,59] [%emt 00:03:01]} O-O {(O-O) [%eval 0,42] [%emt 00:01:43]}
14.Nb3 {(Nb3) [%eval 0,60] [%emt 00:02:12]} Qc6 {(Qc6) [%eval 0,47] [%emt 00:02:02]}
15.Be2 {(Be2) [%eval 0,56] [%emt 00:03:01]} Qa4 {(Nxb3) [%eval 0,46] [%emt 00:01:42]}
16.Nfd4 {(c4) [%eval 0,56] [%emt 00:02:25]} Nc4 {(Nc4) [%eval 0,46] [%emt 00:02:42]}
17.Qd3 {(Qd3) [%eval 0,55] [%emt 00:06:12]} Nge5 {(Nge5) [%eval 0,47] [%emt 00:02:24]}
18.Qg3 {(Qg3) [%eval 0,58] [%emt 00:02:13]} f6 {(f6) [%eval 0,47] [%emt 00:05:09]}
19.Bf4 {(Bf4) [%eval 0,56] [%emt 00:03:34]} Re8 {(Re8) [%eval 0,47] [%emt 00:01:38]}
20.Nd2 {(Nd2) [%eval 0,56] [%emt 00:03:42]} Nd6 {(Nd6) [%eval 0,49] [%emt 00:02:31]}
21.h4 {(h4) [%eval 0,59] [%emt 00:02:10]} Kh8 {(Kh8) [%eval 0,48] [%emt 00:02:32]}
22.h5 {(h5) [%eval 0,59] [%emt 00:03:07]} h6 {(h6) [%eval 0,49] [%emt 00:02:02]}
23.Re1 {(Re1) [%eval 0,62] [%emt 00:07:37]} Bd7 {(Qa3) [%eval 0,50] [%emt 00:02:24]}
24.Bd1 {(Bd1) [%eval 0,55] [%emt 00:01:21]} Qa3 {(Qa3) [%eval 0,50] [%emt 00:02:05]}
25.Bb3 {(Bb3) [%eval 0,58] [%emt 00:02:06]} a5 {(a5) [%eval 0,50] [%emt 00:02:14]}
26.N2f3 {(N2f3) [%eval 0,62] [%emt 00:03:10]} a4 {(a4) [%eval 0,51] [%emt 00:02:38]}
27.Nxe5 {(Nxe5) [%eval 0,60] [%emt 00:02:40]} fxe5 {(fxe5) [%eval 0,52] [%emt 00:02:29]}
28.Bxe5 {(Bxe5) [%eval 0,64] [%emt 00:03:56]} Rxe5 {(Rxe5) [%eval 0,54] [%emt 00:02:27]}
29.Qxe5 {(Qxe5) [%eval 0,67] [%emt 00:04:36]} Re8 {(Re8) [%eval 0,56] [%emt 00:01:53]}
30.Ne6 {(Ne6) [%eval 0,69] [%emt 00:13:46]} Re7 {(Re7) [%eval 0,57] [%emt 00:02:12]}
31.Bd5 {(Bd5) [%eval 0,70] [%emt 00:02:22]} c6 {(c6) [%eval 0,58] [%emt 00:02:18]}
32.Rab1 {(Rab1) [%eval 0,64] [%emt 00:08:39]} Ba5 {(Ba5) [%eval 0,57] [%emt 00:02:28]}
33.Re3 {(Nf4) [%eval 0,66] [%emt 00:03:02]} cxd5 {(cxd5) [%eval 0,52] [%emt 00:02:03]}
34.exd5 {(exd5) [%eval 0,69] [%emt 00:00:58]} Bc7 {(Qxa2) [%eval 0,53] [%emt 00:02:08]}
35.Qg3 {(Qg3) [%eval 0,70] [%emt 00:02:52]} Qxa2 {(Qxa2) [%eval 0,57] [%emt 00:02:17]}
36.Rbe1 {(Rbe1) [%eval 0,72] [%emt 00:01:14]} Bxe6 {(Bxe6) [%eval 0,61] [%emt 00:01:40]}
37.Rxe6 {(Rxe6) [%eval 0,73] [%emt 00:01:33]} Rxe6 {(Rxe6) [%eval 0,62] [%emt 00:02:30]}
38.dxe6 {(dxe6) [%eval 0,74] [%emt 00:02:02]} Qd2 {(Qd2) [%eval 0,63] [%emt 00:03:31]}
39.Kf1 {(Kf1) [%eval 0,70] [%emt 00:01:44]} a3 {(a3) [%eval 0,64] [%emt 00:01:47]}
40.Qf3 {(e7) [%eval 0,73] [%emt 00:01:39]} a2 {(a2) [%eval 0,64] [%emt 00:09:36]}
41.Qe2 {(Qe2) [%eval 0,62] [%emt 00:01:25]} Qxe2 {(Qd5) [%eval 0,65] [%emt 00:01:53]}
42.Kxe2 {(Kxe2) [%eval 0,69] [%emt 00:01:15]} Kg8 {(Kg8) [%eval 0,67] [%emt 00:01:59]}
43.Kd3 {(Kd3) [%eval 0,70] [%emt 00:01:09]} Kf8 {(Kf8) [%eval 0,66] [%emt 00:02:19]}
44.Ra1 {(Ra1) [%eval 0,72] [%emt 00:02:55]} Ke7 {(Ke7) [%eval 0,66] [%emt 00:02:02]}
45.Rxa2 {(Rxa2) [%eval 0,78] [%emt 00:01:02]} Kxe6 {(Kxe6) [%eval 0,66] [%emt 00:05:23]}
46.c4 {(Ra8) [%eval 0,75] [%emt 00:00:56]} Bb6 {(Ne8) [%eval 0,66] [%emt 00:01:15]}
47.Re2 {(Re2) [%eval 0,73] [%emt 00:01:00]} Kf6 {(Kf6) [%eval 0,67] [%emt 00:02:00]}
48.f4 {(g4) [%eval 0,72] [%emt 00:01:04]} Bc5 {(Bc5) [%eval 0,69] [%emt 00:02:28]}
49.g4 {(g4) [%eval 0,81] [%emt 00:03:33]} b6 {(b6) [%eval 0,71] [%emt 00:03:06]}
50.Ra2 {(Rg2) [%eval 0,84] [%emt 00:00:52]} Nf7 {(g5) [%eval 0,67] [%emt 00:02:10]}
51.Ra8 {(Re2) [%eval 0,68] [%emt 00:01:06]} Nd6 {(Nd6) [%eval 0,67] [%emt 00:04:39]}
52.Rh8 {(Rg8) [%eval 0,76] [%emt 00:00:59]} Nf7 {(Ke6) [%eval 0,67] [%emt 00:01:49]}
53.Re8 {(Rg8) [%eval 0,82] [%emt 00:01:01]} Nd6 {(Nd6) [%eval 0,67] [%emt 00:00:55]}
54.Ra8 {(Re2) [%eval 0,82] [%emt 00:00:51]} Ke6 {(g5) [%eval 0,67] [%emt 00:00:55]}
55.Ra7 {(Rf8) [%eval 0,77] [%emt 00:00:53]} Kf6 {(Kf6) [%eval 0,67] [%emt 00:00:34]}
56.g5 {(Ra6) [%eval 0,96] [%emt 00:00:45]} hxg5 {(hxg5) [%eval 0,72] [%emt 00:00:44]}
57.fxg5 {(fxg5) [%eval 0,95] [%emt 00:01:18]} Kxg5 {(Kxg5) [%eval 0,71] [%emt 00:01:00]}
58.Rxg7 {(Rxg7) [%eval 0,104] [%emt 00:00:30]} Kxh5 {(Kxh5) [%eval 0,70] [%emt 00:01:11]}
59.Rg2 {(Rg3) [%eval 0,105] [%emt 00:01:03]} Nf7 {(b5) [%eval 0,67] [%emt 00:01:06]}
60.Kc3 {(Rg8) [%eval 0,87] [%emt 00:00:28]} Nd6 {(Ng5) [%eval 0,67] [%emt 00:01:08]}
61.Rg8 {(Kd3) [%eval 0,82] [%emt 00:00:27]} Nf7 {(Ne4) [%eval 0,68] [%emt 00:00:32]}
62.Kb3 {(Kd3) [%eval 0,91] [%emt 00:00:32]} Nd6 {(Nd6) [%eval 0,67] [%emt 00:00:55]}
63.Kc3 {(Rg7) [%eval 0,245] [%emt 00:01:00]} Ne4 {(Ne4) [%eval 0,65] [%emt 00:00:33]}
64.Kd3 {(Kd3) [%eval 0,82] [%emt 00:00:23]} Ng5 {(Nf6) [%eval 0,67] [%emt 00:00:42]}
65.Kc2 {(Kc2) [%eval 0,92] [%emt 00:00:30]} Kg4 {(Kh6) [%eval 0,69] [%emt 00:00:30]}
66.Kb3 {(Kb3) [%eval 0,90] [%emt 00:00:24]} Bd4 {(Kf4) [%eval 0,65] [%emt 00:03:27]}
67.Ka4 {(Ka3) [%eval 0,90] [%emt 00:00:26]} Bc5 {(Bc5) [%eval 0,67] [%emt 00:00:25]}
68.Kb5 {(Re8) [%eval 0,84] [%emt 00:00:45]} Kf5 {(Kh5) [%eval 0,68] [%emt 00:00:23]}
1/2-1/2[/pgn]