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

[Graham Banks]

STOCKFISH 16CPU v KOMODO DRAGON 16CPU (LTC Gambits Match)

AMD Ryzen 5950x
ChessGUI
4096mb hash
3-4-5 piece tablebases
Ponder off
GB-Gambit.cgb book
2 hours + 30 second increments
40 gambit lines - 80 games

Games can be followed live from here:
http://tlcv.net/16076

Finished games will be posted in this thread.

[Graham Banks]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 *

The so-called "Shabalov-Shirov gambit" is a speculative gambit, a dagger at the kingside, and a challenge to the center. Yes, like many other wing advances, 7.g4 does have an aim at the center, since it threatens to displace the knight from f6. As with all chess moves, 7.g4 must have some downsides. This move obviously weakens the white kingside, thus making it probably not a suitable place for the king. The white king will usually have to find refuge on the more airy queenside. The advance of the g-pawn also makes White rather vulnerable to the opening of the center, when weakened squares such as f3 might be exposed or the g-pawn itself might be attacked.
https://www.chess.com/article/view/the- ... rov-gambit

[Graham Banks]

GAME 1

Komodo Dragon was happy to gobble up the gambit pawn, and shortly afterwards, Stockfish decided that forcing a draw by repetition was its best option.
With the white king being stuck in the centre, and lines about to be opened up, it looked like a safe decision.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.08"]
[Round "1.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "2:45:42 pm"]
[ECO "D15"]
[Opening "Three Knights Variation, Slav; D15"]
[TimeControl "7200+2"]
[PlyCount "35"]
[Number "1"]
[Termination "3-fold rep"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.d4 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
2.c4 {[%eval 0,1] [%emt 00:00:00]} c6 {[%eval 0,1] [%emt 00:00:00]}
3.Nf3 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
4.Nc3 {[%eval 0,1] [%emt 00:00:00]} e6 {[%eval 0,1] [%emt 00:00:00]}
5.e3 {[%eval 0,1] [%emt 00:00:00]} Nbd7 {[%eval 0,1] [%emt 00:00:00]}
6.Qc2 {[%eval 0,1] [%emt 00:00:00]} Bd6 {[%eval 0,1] [%emt 00:00:00]}
7.g4 {[%eval 0,1] [%emt 00:00:00]} Nxg4 {[%eval 0,37] [%emt 00:02:11]}
8.Rg1 {(Rg1) [%eval 0,56] [%emt 00:04:09]} Qf6 {(Qf6) [%eval 0,42] [%emt 00:02:50]}
9.Rxg4 {(Rxg4) [%eval 0,56] [%emt 00:03:55]} Qxf3 {(Qxf3) [%eval 0,46] [%emt 00:01:53]}
10.h3 {(h3) [%eval 0,60] [%emt 00:03:57]} O-O {(O-O) [%eval 0,45] [%emt 00:02:38]}
11.e4 {(e4) [%eval 0,57] [%emt 00:01:54]} e5 {(e5) [%eval 0,48] [%emt 00:02:52]}
12.Bg2 {(Bg2) [%eval 0,60] [%emt 00:01:43]} Qf6 {(Qf6) [%eval 0,50] [%emt 00:02:22]}
13.Bg5 {(Bg5) [%eval 0,61] [%emt 00:02:03]} Qg6 {(Qg6) [%eval 0,51] [%emt 00:02:18]}
14.Be7 {(Be7) [%eval 0,65] [%emt 00:02:43]} Qh6 {(Qh6) [%eval 0,52] [%emt 00:03:22]}
15.Rh4 {(Rh4) [%eval 0,67] [%emt 00:07:20]} Qg6 {(Qg6) [%eval 0,54] [%emt 00:02:39]}
16.Rg4 {(Rg4) [%eval 0,67] [%emt 00:02:43]} Qh6 {(Qh6) [%eval 0,54] [%emt 00:02:46]}
17.Rh4 {(Rh4) [%eval 0,68] [%emt 00:06:08]} Qg6 {(Qg6) [%eval 0,59] [%emt 00:02:32]}
18.Rg4 {(Rg4) [%eval 0,78] [%emt 00:03:49]}
1/2-1/2[/pgn]

[Graham Banks]

GAME 2

In contrast to the previous game, Stockfish declined the pawn offer.
The two engines castled on opposite sides, and proceeded to eye up the enemy king.
Although, to the human eye, Stockfish looked to be in more danger, the reality was that, as in the first game, both sides thought that the game was drawn throughout.
Some tactics from Komodo Dragon then reduced the game into a rook and pawn ending, that eventually petered out into a draw.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.08"]
[Round "1.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "3:55:10 pm"]
[ECO "D15"]
[Opening "Three Knights Variation, Slav; D15"]
[TimeControl "7200+2"]
[PlyCount "153"]
[Number "2"]
[Termination "GUI adjudication"]
[WhiteType "program"]
[BlackType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.d4 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
2.c4 {[%eval 0,1] [%emt 00:00:00]} c6 {[%eval 0,1] [%emt 00:00:00]}
3.Nf3 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
4.Nc3 {[%eval 0,1] [%emt 00:00:00]} e6 {[%eval 0,1] [%emt 00:00:00]}
5.e3 {[%eval 0,1] [%emt 00:00:00]} Nbd7 {[%eval 0,1] [%emt 00:00:00]}
6.Qc2 {[%eval 0,1] [%emt 00:00:00]} Bd6 {[%eval 0,1] [%emt 00:00:00]}
7.g4 {[%eval 0,1] [%emt 00:00:00]} h6 {[%eval 0,51] [%emt 00:05:55]}
8.h3 {(Bd2) [%eval 0,43] [%emt 00:03:50]} e5 {(e5) [%eval 0,53] [%emt 00:01:28]}
9.dxe5 {(Nxe5) [%eval 0,45] [%emt 00:03:56]} Nxe5 {(Nxe5) [%eval 0,50] [%emt 00:02:00]}
10.Nxe5 {(Nxe5) [%eval 0,47] [%emt 00:01:40]} Bxe5 {(Bxe5) [%eval 0,52] [%emt 00:01:50]}
11.Bd2 {(Bd2) [%eval 0,47] [%emt 00:07:02]} Qe7 {(O-O) [%eval 0,54] [%emt 00:01:54]}
12.O-O-O {(O-O-O) [%eval 0,47] [%emt 00:02:17]} O-O {(O-O) [%eval 0,59] [%emt 00:01:44]}
13.Kb1 {(Kb1) [%eval 0,47] [%emt 00:02:00]} dxc4 {(dxc4) [%eval 0,59] [%emt 00:01:34]}
14.Bxc4 {(Bxc4) [%eval 0,49] [%emt 00:02:28]} b5 {(b5) [%eval 0,57] [%emt 00:01:43]}
15.Bd3 {(Bd3) [%eval 0,49] [%emt 00:02:27]} c5 {(Bb7) [%eval 0,60] [%emt 00:01:59]}
16.f4 {(f4) [%eval 0,49] [%emt 00:02:07]} Bxc3 {(Bxc3) [%eval 0,61] [%emt 00:01:45]}
17.Bxc3 {(Bxc3) [%eval 0,50] [%emt 00:02:53]} Bb7 {(Bb7) [%eval 0,61] [%emt 00:02:16]}
18.Rhg1 {(Rhg1) [%eval 0,52] [%emt 00:02:05]} c4 {(c4) [%eval 0,63] [%emt 00:01:53]}
19.Bf5 {(Bf5) [%eval 0,52] [%emt 00:02:08]} Nd5 {(Nd5) [%eval 0,61] [%emt 00:01:49]}
20.g5 {(g5) [%eval 0,52] [%emt 00:02:05]} h5 {(h5) [%eval 0,65] [%emt 00:05:08]}
21.g6 {(g6) [%eval 0,52] [%emt 00:02:29]} Nxc3 {(Nxc3) [%eval 0,64] [%emt 00:01:49]}
22.bxc3 {(bxc3) [%eval 0,53] [%emt 00:01:41]} fxg6 {(Bf3) [%eval 0,66] [%emt 00:01:37]}
23.Rd7 {(Rd7) [%eval 0,50] [%emt 00:02:09]} Qxe3 {(Qxe3) [%eval 0,68] [%emt 00:02:25]}
24.Rxg6 {(Rxg6) [%eval 0,54] [%emt 00:01:55]} Rf7 {(Rf7) [%eval 0,72] [%emt 00:02:13]}
25.Rxf7 {(Rxf7) [%eval 0,55] [%emt 00:02:47]} Kxf7 {(Kxf7) [%eval 0,74] [%emt 00:01:53]}
26.Be6 {(Be6) [%eval 0,56] [%emt 00:01:41]} Ke8 {(Ke8) [%eval 0,74] [%emt 00:02:28]}
27.Bd7 {(Bd7) [%eval 0,60] [%emt 00:01:57]} Kxd7 {(Kxd7) [%eval 0,76] [%emt 00:01:54]}
28.Rxg7 {(Rxg7) [%eval 0,62] [%emt 00:03:04]} Kd6 {(Kd6) [%eval 0,80] [%emt 00:02:36]}
29.Qg6 {(Qg6) [%eval 0,63] [%emt 00:09:17]} Qe6 {(Qe6) [%eval 0,83] [%emt 00:01:40]}
30.Qxe6 {(Qxe6) [%eval 0,67] [%emt 00:03:02]} Kxe6 {(Kxe6) [%eval 0,82] [%emt 00:01:35]}
31.Rxb7 {(Rxb7) [%eval 0,68] [%emt 00:02:40]} a6 {(a6) [%eval 0,92] [%emt 00:01:30]}
32.Rh7 {(a4) [%eval 0,70] [%emt 00:02:36]} Kf5 {(Rg8) [%eval 0,85] [%emt 00:01:21]}
33.Rxh5 {(Rxh5) [%eval 0,68] [%emt 00:01:54]} Ke4 {(Kxf4) [%eval 0,90] [%emt 00:01:23]}
34.Kb2 {(h4) [%eval 0,68] [%emt 00:01:49]} Rd8 {(Kxf4) [%eval 0,90] [%emt 00:01:18]}
35.Kc2 {(Kc2) [%eval 0,66] [%emt 00:01:44]} Kxf4 {(Kxf4) [%eval 0,101] [%emt 00:01:34]}
36.Kb2 {(Rh6) [%eval 0,67] [%emt 00:01:55]} Rd2 {(Ke3) [%eval 0,83] [%emt 00:01:33]}
37.Kb1 {(Kb1) [%eval 0,68] [%emt 00:02:00]} Ke4 {(Ke3) [%eval 0,91] [%emt 00:01:21]}
38.Rg5 {(Rg5) [%eval 0,67] [%emt 00:03:52]} Rh2 {(Rd1) [%eval 0,95] [%emt 00:01:36]}
39.Rg4 {(a4) [%eval 0,69] [%emt 00:01:54]} Kd3 {(Kd3) [%eval 0,97] [%emt 00:01:45]}
40.Rg3 {(Rg3) [%eval 0,71] [%emt 00:06:15]} Ke4 {(Ke4) [%eval 0,86] [%emt 00:01:23]}
41.a4 {(Rg4) [%eval 0,74] [%emt 00:02:15]} bxa4 {(bxa4) [%eval 0,95] [%emt 00:02:08]}
42.Ka1 {(Rg4) [%eval 0,71] [%emt 00:01:20]} Re2 {(a3) [%eval 0,112] [%emt 00:02:03]}
43.Kb1 {(Kb1) [%eval 0,72] [%emt 00:01:02]} Rh2 {(Rh2) [%eval 0,91] [%emt 00:01:39]}
44.Rg4 {(Rg4) [%eval 0,74] [%emt 00:02:40]} Kd3 {(Ke3) [%eval 0,93] [%emt 00:01:28]}
45.Rg3 {(Rg3) [%eval 0,71] [%emt 00:00:58]} Kd2 {(Kd2) [%eval 0,98] [%emt 00:01:10]}
46.Kb2 {(Kb2) [%eval 0,73] [%emt 00:01:23]} a5 {(Rh1) [%eval 0,106] [%emt 00:01:14]}
47.Ka3 {(Ka3) [%eval 0,74] [%emt 00:00:59]} Kc2 {(Ke2) [%eval 0,103] [%emt 00:08:23]}
48.Kxa4 {(Kxa4) [%eval 0,76] [%emt 00:03:58]} Rh1 {(Rh1) [%eval 0,199] [%emt 00:13:00]}
49.Kxa5 {(Kxa5) [%eval 0,72] [%emt 00:01:31]} Kb3 {(Rb1) [%eval 0,109] [%emt 00:00:25]}
50.Kb5 {(Kb5) [%eval 0,73] [%emt 00:01:09]} Rd1 {(Rd1) [%eval 0,108] [%emt 00:00:50]}
51.Rg4 {(Rg5) [%eval 0,72] [%emt 00:02:27]} Rd5 {(Kxc3) [%eval 0,90] [%emt 00:00:37]}
52.Kc6 {(Kc6) [%eval 0,70] [%emt 00:00:20]} Rd3 {(Rd8) [%eval 0,93] [%emt 00:00:41]}
53.h4 {(h4) [%eval 0,70] [%emt 00:00:26]} Rxc3 {(Rxc3) [%eval 0,93] [%emt 00:00:44]}
54.Kd5 {(Kd5) [%eval 0,67] [%emt 00:00:26]} Rc1 {(Rc1) [%eval 0,96] [%emt 00:00:29]}
55.Rg6 {(Rg6) [%eval 0,67] [%emt 00:00:17]} c3 {(Rh1) [%eval 0,95] [%emt 00:00:50]}
56.Rb6 {(Rb6) [%eval 0,65] [%emt 00:00:22]} Kc2 {(Kc2) [%eval 0,88] [%emt 00:00:53]}
57.Ke5 {(Ke5) [%eval 0,66] [%emt 00:00:40]} Rb1 {(Rd1) [%eval 0,92] [%emt 00:00:37]}
58.Rc6 {(Rc6) [%eval 0,68] [%emt 00:01:09]} Rh1 {(Rh1) [%eval 0,91] [%emt 00:00:30]}
59.Rh6 {(Rh6) [%eval 0,68] [%emt 00:00:44]} Rf1 {(Kb2) [%eval 0,91] [%emt 00:00:31]}
60.Rc6 {(h5) [%eval 0,65] [%emt 00:00:12]} Kd2 {(Rf3) [%eval 0,89] [%emt 00:00:42]}
61.Rd6 {(Rd6) [%eval 0,66] [%emt 00:00:11]} Kc1 {(Kc2) [%eval 0,91] [%emt 00:00:27]}
62.h5 {(h5) [%eval 0,65] [%emt 00:00:09]} c2 {(Rh1) [%eval 0,92] [%emt 00:00:31]}
63.Ke4 {(Ke4) [%eval 0,66] [%emt 00:00:12]} Kb2 {(Rh1) [%eval 0,100] [%emt 00:00:41]}
64.Rb6 {(Rb6) [%eval 0,64] [%emt 00:00:13]} Kc1 {(Kc1) [%eval 0,95] [%emt 00:00:33]}
65.Ke3 {(h6) [%eval 0,66] [%emt 00:00:44]} Rf5 {(Kd1) [%eval 0,90] [%emt 00:00:29]}
66.h6 {(h6) [%eval 0,62] [%emt 00:00:08]} Rf1 {(Re5) [%eval 0,90] [%emt 00:00:33]}
67.h7 {(h7) [%eval 0,57] [%emt 00:00:09]} Rh1 {(Re1) [%eval 0,102] [%emt 00:01:09]}
68.Rb7 {(Rb7) [%eval 0,65] [%emt 00:00:14]} Rh3 {(Rh3) [%eval 0,95] [%emt 00:00:21]}
69.Ke2 {(Kf4) [%eval 0,66] [%emt 00:00:09]} Rh4 {(Rh4) [%eval 0,113] [%emt 00:00:39]}
70.Kf3 {(Kf3) [%eval 0,69] [%emt 00:00:05]} Kd1 {(Rh3) [%eval 0,107] [%emt 00:00:19]}
71.Rd7 {(Rd7) [%eval 0,63] [%emt 00:00:07]} Ke1 {(Kc1) [%eval 0,114] [%emt 00:00:24]}
72.Re7 {(Re7) [%eval 0,73] [%emt 00:00:12]} Kd1 {(Kd2) [%eval 0,111] [%emt 00:00:29]}
73.Rd7 {(Rd7) [%eval 0,59] [%emt 00:00:04]} Ke1 {(Kc1) [%eval 0,123] [%emt 00:00:21]}
74.Re7 {(Re7) [%eval 0,65] [%emt 00:00:22]} Kd2 {(Kd2) [%eval 0,113] [%emt 00:00:21]}
75.Rd7 {(Rd7) [%eval 0,75] [%emt 00:00:06]} Kc1 {(Kc3) [%eval 0,112] [%emt 00:00:21]}
76.Re7 {(Kg3) [%eval 0,66] [%emt 00:00:03]} Rh6 {(Rh3) [%eval 0,114] [%emt 00:00:20]}
77.Kg4 {(Rc7) [%eval 0,66] [%emt 00:00:03]}
1/2-1/2[/pgn]

[Graham Banks]

Italian Game

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nbd2 *

An effective strategy for White is to sacrifice the e-pawn as above.
While Black can accept the sacrifice with 7…Nxe4, White’s compensation consists of a lead in development, more space, and in some instances having the bishop pair in an open position.
The usual way for Black to decline the sacrifice is with 7…d5. If Black declines the sacrifice White must be willing to play with an isolated queen’s pawn.
https://www.chessable.com/blog/the-italian-game/

[Graham Banks]

GAME 3

Komodo Dragon took the gambit pawn, whereupon a trading off of pieces led to a queenless middlegame.
White's compensation for the pawn was as explained in the pre-game notes - mainly an active bishop pair and more space.
Stockfish manipulated proceedings to go into a double rook and pawns endgame, still a pawn down, but with a passed pawn on the b-file.
This was enough to coax Komodo Dragon into forcing a draw through eventual threefold repetition.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.08"]
[Round "2.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "7:53:16 pm"]
[ECO "C53"]
[Opening "Grevo Gambit, Italian"]
[TimeControl "7200+2"]
[PlyCount "121"]
[Number "3"]
[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]} 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.c3 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
5.d4 {[%eval 0,1] [%emt 00:00:00]} exd4 {[%eval 0,1] [%emt 00:00:00]}
6.cxd4 {[%eval 0,1] [%emt 00:00:00]} Bb4 {[%eval 0,1] [%emt 00:00:00]}
7.Nbd2 {[%eval 0,1] [%emt 00:00:00]} Nxe4 {[%eval 0,44] [%emt 00:02:46]}
8.d5 {(d5) [%eval 0,60] [%emt 00:04:44]} Bxd2 {(Bxd2) [%eval 0,47] [%emt 00:01:49]}
9.Nxd2 {(Bxd2) [%eval 0,64] [%emt 00:03:03]} Nxd2 {(Nxd2) [%eval -2,47] [%emt 00:02:21]}
10.Bxd2 {(Bxd2) [%eval 0,70] [%emt 00:01:37]} Qe7 {(Qe7) [%eval 0,51] [%emt 00:02:06]}
11.Qe2 {(Qe2) [%eval 0,56] [%emt 00:01:31]} Qxe2 {(Qxe2) [%eval 0,54] [%emt 00:02:14]}
12.Bxe2 {(Bxe2) [%eval 0,63] [%emt 00:01:41]} Nd4 {(Nd4) [%eval 0,56] [%emt 00:03:09]}
13.Bd3 {(Bd3) [%eval 0,65] [%emt 00:01:57]} d6 {(d6) [%eval 0,57] [%emt 00:02:58]}
14.Rc1 {(Rc1) [%eval 0,63] [%emt 00:02:08]} c5 {(c5) [%eval 0,56] [%emt 00:02:40]}
15.dxc6 {(dxc6) [%eval 0,61] [%emt 00:01:38]} bxc6 {(bxc6) [%eval 0,55] [%emt 00:03:41]}
16.Be3 {(Be3) [%eval 0,62] [%emt 00:03:02]} Ne6 {(Ne6) [%eval 0,56] [%emt 00:02:54]}
17.Rxc6 {(Rxc6) [%eval 0,59] [%emt 00:02:32]} Bb7 {(Bb7) [%eval 0,55] [%emt 00:02:36]}
18.Rc3 {(Rc3) [%eval 0,62] [%emt 00:01:57]} Bxg2 {(Bxg2) [%eval 0,56] [%emt 00:05:15]}
19.Rg1 {(Rg1) [%eval 0,59] [%emt 00:05:45]} Bd5 {(Bd5) [%eval 0,57] [%emt 00:02:05]}
20.f4 {(Rg4) [%eval 0,59] [%emt 00:02:46]} O-O {(O-O) [%eval 0,49] [%emt 00:02:46]}
21.b4 {(b4) [%eval 0,60] [%emt 00:03:12]} a5 {(f5) [%eval 0,52] [%emt 00:02:15]}
22.b5 {(b5) [%eval 0,57] [%emt 00:01:33]} Bxa2 {(Bxa2) [%eval 0,50] [%emt 00:02:35]}
23.Kd2 {(Kd2) [%eval 0,55] [%emt 00:01:34]} Rfd8 {(g6) [%eval 0,53] [%emt 00:02:31]}
24.f5 {(f5) [%eval 0,59] [%emt 00:01:38]} Nc5 {(Nc5) [%eval 0,55] [%emt 00:02:45]}
25.Bxc5 {(Bxc5) [%eval 0,59] [%emt 00:01:30]} dxc5 {(dxc5) [%eval 0,57] [%emt 00:02:03]}
26.Rxc5 {(Rxc5) [%eval 0,59] [%emt 00:02:11]} Kf8 {(a4) [%eval 0,55] [%emt 00:02:24]}
27.Ra1 {(Kc3) [%eval 0,63] [%emt 00:01:31]} Bd5 {(Bd5) [%eval 0,56] [%emt 00:02:17]}
28.Kc3 {(Kc3) [%eval 0,68] [%emt 00:01:53]} Rd6 {(Ke7) [%eval 0,55] [%emt 00:02:26]}
29.Rc7 {(Rd1) [%eval 0,59] [%emt 00:01:41]} g5 {(Ke8) [%eval 0,56] [%emt 00:01:56]}
30.fxg6 {(fxg6) [%eval 0,63] [%emt 00:01:35]} hxg6 {(hxg6) [%eval 0,61] [%emt 00:01:55]}
31.Bc4 {(Bc4) [%eval 0,70] [%emt 00:01:34]} Bxc4 {(Bxc4) [%eval 0,66] [%emt 00:04:37]}
32.Kxc4 {(Kxc4) [%eval 0,72] [%emt 00:01:44]} Rf6 {(a4) [%eval 0,65] [%emt 00:12:43]}
33.Rb1 {(Kc5) [%eval 0,61] [%emt 00:01:42]} Rb8 {(Rb8) [%eval 0,65] [%emt 00:04:07]}
34.Ra7 {(Kc5) [%eval 0,245] [%emt 00:03:44]} Kg7 {(Rf2) [%eval 0,64] [%emt 00:08:35]}
35.Rxa5 {(Rxa5) [%eval 0,68] [%emt 00:01:12]} Rf4 {(Rf4) [%eval 0,65] [%emt 00:01:48]}
36.Kd5 {(Kc5) [%eval 0,82] [%emt 00:01:23]} Rf2 {(Rf5) [%eval 0,64] [%emt 00:01:31]}
37.Ra7 {(Ra4) [%eval 0,72] [%emt 00:01:22]} Rf5 {(Rxh2) [%eval 0,65] [%emt 00:01:51]}
38.Kc4 {(Kc6) [%eval 0,75] [%emt 00:01:57]} Rc8 {(Rc8) [%eval 0,63] [%emt 00:01:05]}
39.Kd4 {(Kd3) [%eval 0,77] [%emt 00:01:43]} Rd8 {(Rd8) [%eval 0,65] [%emt 00:02:41]}
40.Kc4 {(Kc4) [%eval 0,80] [%emt 00:10:00]} Rc8 {(Rc8) [%eval 0,66] [%emt 00:02:29]}
41.Kd4 {(Kd4) [%eval 0,85] [%emt 00:01:56]} Rd8 {(Rf2) [%eval 0,65] [%emt 00:00:48]}
42.Ke3 {(Kc4) [%eval 0,77] [%emt 00:00:54]} Rh5 {(Re5) [%eval 0,66] [%emt 00:00:55]}
43.b6 {(b6) [%eval 0,83] [%emt 00:01:00]} Rxh2 {(Rh3) [%eval 0,65] [%emt 00:00:46]}
44.Rc7 {(Ra5) [%eval 0,80] [%emt 00:01:07]} Rh3 {(Rh3) [%eval 0,64] [%emt 00:00:57]}
45.Ke4 {(Kf4) [%eval 0,79] [%emt 00:02:16]} Rh4 {(Rhd3) [%eval 0,65] [%emt 00:01:53]}
46.Kf3 {(Ke5) [%eval 0,78] [%emt 00:01:04]} Rd3 {(Rh3) [%eval 0,63] [%emt 00:02:09]}
47.Kg2 {(Kg2) [%eval 0,74] [%emt 00:00:51]} Rd2 {(Rg4) [%eval 0,65] [%emt 00:02:19]}
48.Kg3 {(Kg3) [%eval 0,89] [%emt 00:00:52]} Rhh2 {(Rhh2) [%eval 0,61] [%emt 00:00:18]}
49.b7 {(Rc3) [%eval 0,97] [%emt 00:01:01]} Rhg2 {(Rhg2) [%eval 0,65] [%emt 00:00:19]}
50.Kf4 {(Kf3) [%eval 0,103] [%emt 00:01:00]} Rgf2 {(Rgf2) [%eval 0,64] [%emt 00:01:40]}
51.Ke3 {(Ke3) [%eval 0,100] [%emt 00:01:38]} Rfe2 {(Rfe2) [%eval 0,69] [%emt 00:01:10]}
52.Kf4 {(Kf4) [%eval 0,103] [%emt 00:01:23]} Rf2 {(Rf2) [%eval 0,66] [%emt 00:00:11]}
53.Ke3 {(Ke5) [%eval 0,104] [%emt 00:01:43]} Rfe2 {(Rfe2) [%eval 0,70] [%emt 00:00:25]}
54.Kf3 {(Kf4) [%eval 0,104] [%emt 00:01:03]} Rf2 {(Rf2) [%eval 0,67] [%emt 00:00:53]}
55.Kg4 {(Ke4) [%eval 0,109] [%emt 00:03:38]} Rg2 {(Rg2) [%eval 0,65] [%emt 00:00:11]}
56.Kf3 {(Kf4) [%eval 0,108] [%emt 00:00:45]} Rgf2 {(Rgf2) [%eval 0,67] [%emt 00:00:19]}
57.Kg4 {(Kg4) [%eval 0,112] [%emt 00:01:16]} Rg2 {(Rg2) [%eval 0,59] [%emt 00:00:35]}
58.Kh3 {(Kf4) [%eval 0,105] [%emt 00:01:07]} Rh2 {(Rh2) [%eval 0,67] [%emt 00:00:41]}
59.Kg3 {(Kg3) [%eval 0,107] [%emt 00:00:40]} Rhg2 {(Rhg2) [%eval 0,65] [%emt 00:00:27]}
60.Kh4 {(Kh3) [%eval 0,108] [%emt 00:07:18]} Rh2 {(Rh2) [%eval 0,58] [%emt 00:00:12]}
61.Kg3 {(Kg3) [%eval 0,115] [%emt 00:03:56]}
1/2-1/2[/pgn]

[Graham Banks]

GAME 4

This game developed differently, as the gambit pawn was still taken, but the queens remained on the board.
Komodo Dragon had the better development, and more space, enough to compensate for the pawn.
Both sides saw the position as dead equal, and although Komodo Dragon was happy to acquiesce in an early repetition, Stockfish made it work a lot harder before the inevitable conclusion was reached.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.08"]
[Round "2.2"]
[White "Dragon 3 by Komodo 64-bit 16CPU"]
[Black "Stockfish 15 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "11:53:12 pm"]
[ECO "C53"]
[Opening "Grevo Gambit, Italian"]
[TimeControl "7200+30"]
[PlyCount "95"]
[Number "4"]
[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]} 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.c3 {[%eval 0,1] [%emt 00:00:00]} Nf6 {[%eval 0,1] [%emt 00:00:00]}
5.d4 {[%eval 0,1] [%emt 00:00:00]} exd4 {[%eval 0,1] [%emt 00:00:00]}
6.cxd4 {[%eval 0,1] [%emt 00:00:00]} Bb4 {[%eval 0,1] [%emt 00:00:00]}
7.Nbd2 {[%eval 0,1] [%emt 00:00:00]} Bxd2 {[%eval 0,61] [%emt 00:06:56]}
8.Bxd2 {(Bxd2) [%eval 0,44] [%emt 00:02:46]} Nxe4 {(Nxe4) [%eval 0,61] [%emt 00:05:07]}
9.d5 {(d5) [%eval -4,47] [%emt 00:03:22]} Ne7 {(Nxd2) [%eval 7,59] [%emt 00:13:41]}
10.Bb4 {(Bc1) [%eval 0,45] [%emt 00:03:02]} d6 {(d6) [%eval 0,53] [%emt 00:04:14]}
11.O-O {(O-O) [%eval 2,46] [%emt 00:02:59]} O-O {(a5) [%eval 0,54] [%emt 00:01:15]}
12.Re1 {(Re1) [%eval 0,38] [%emt 00:02:13]} Nc5 {(Nc5) [%eval 0,51] [%emt 00:04:09]}
13.Qd2 {(Qd2) [%eval 0,48] [%emt 00:02:57]} Nf5 {(Nf5) [%eval 0,53] [%emt 00:01:58]}
14.a3 {(Bc3) [%eval 0,49] [%emt 00:03:38]} Bd7 {(Nh4) [%eval 0,58] [%emt 00:02:21]}
15.Qc2 {(Qc2) [%eval 0,49] [%emt 00:02:12]} Nh4 {(Nh4) [%eval 0,60] [%emt 00:02:21]}
16.Nxh4 {(Nxh4) [%eval 0,51] [%emt 00:02:30]} Qxh4 {(Qxh4) [%eval 0,59] [%emt 00:02:33]}
17.Bxc5 {(Bxc5) [%eval 0,52] [%emt 00:02:23]} dxc5 {(dxc5) [%eval 0,64] [%emt 00:02:22]}
18.Bd3 {(Bd3) [%eval 0,53] [%emt 00:03:11]} b6 {(b6) [%eval 0,63] [%emt 00:02:18]}
19.b4 {(b4) [%eval 0,52] [%emt 00:03:55]} cxb4 {(cxb4) [%eval 0,68] [%emt 00:02:05]}
20.axb4 {(axb4) [%eval 0,54] [%emt 00:03:19]} Rae8 {(Rae8) [%eval 0,63] [%emt 00:01:48]}
21.Qxc7 {(Qxc7) [%eval 0,56] [%emt 00:04:34]} Rxe1 {(Rxe1) [%eval 0,69] [%emt 00:02:28]}
22.Rxe1 {(Rxe1) [%eval 0,61] [%emt 00:02:41]} Qxb4 {(Qxb4) [%eval 0,72] [%emt 00:02:37]}
23.Rb1 {(Rb1) [%eval 0,62] [%emt 00:03:46]} Qa4 {(Qa4) [%eval 0,73] [%emt 00:03:09]}
24.Bc2 {(Bc2) [%eval 0,62] [%emt 00:02:12]} Qa2 {(Qa2) [%eval 0,74] [%emt 00:01:53]}
25.Rc1 {(Qxd7) [%eval 0,62] [%emt 00:02:41]} Qa3 {(Qb2) [%eval 0,71] [%emt 00:05:39]}
26.Rb1 {(Rb1) [%eval 0,59] [%emt 00:02:50]} Bg4 {(Qa2) [%eval 0,69] [%emt 00:05:29]}
27.d6 {(d6) [%eval 0,58] [%emt 00:03:02]} Rc8 {(Rc8) [%eval 0,70] [%emt 00:01:46]}
28.Re1 {(Re1) [%eval 0,65] [%emt 00:01:54]} g6 {(g6) [%eval 0,66] [%emt 00:02:05]}
29.Qe7 {(Qe7) [%eval 0,66] [%emt 00:03:09]} Rxc2 {(Rxc2) [%eval 0,74] [%emt 00:02:12]}
30.Qe8 {(Qe8) [%eval 0,69] [%emt 00:05:50]} Kg7 {(Kg7) [%eval 0,46] [%emt 00:00:00]}
31.Qe5 {(Qe5) [%eval 0,58] [%emt 00:01:45]} f6 {(f6) [%eval 0,69] [%emt 00:03:38]}
32.Qe7 {(Qe7) [%eval 0,65] [%emt 00:02:14]} Kg8 {(Kh6) [%eval 0,74] [%emt 00:02:07]}
33.Qe8 {(Qd8) [%eval 0,65] [%emt 00:10:22]} Kg7 {(Kg7) [%eval 0,55] [%emt 00:00:00]}
34.Qe7 {(Qe7) [%eval 0,65] [%emt 00:05:19]} Kh6 {(Kg8) [%eval 0,77] [%emt 00:12:19]}
35.Qf8 {(Qf8) [%eval 0,64] [%emt 00:02:55]} Kh5 {(Kh5) [%eval 0,78] [%emt 00:01:50]}
36.Qe7 {(Qe7) [%eval 0,63] [%emt 00:04:21]} Kh6 {(Kh6) [%eval 0,78] [%emt 00:08:05]}
37.Qf8 {(Qf8) [%eval 0,65] [%emt 00:04:57]} Kh5 {(Kh5) [%eval 0,78] [%emt 00:01:51]}
38.Qe7 {(Qe7) [%eval 0,64] [%emt 00:01:32]} h6 {(Kh6) [%eval 0,81] [%emt 00:17:38]}
39.h3 {(h3) [%eval 0,56] [%emt 00:01:14]} Bxh3 {(Bf5) [%eval 0,66] [%emt 00:01:38]}
40.Re3 {(Re3) [%eval 0,60] [%emt 00:01:38]} Qc1 {(Qc1) [%eval 0,66] [%emt 00:00:46]}
41.Kh2 {(Kh2) [%eval 0,60] [%emt 00:02:29]} Bf5 {(Bf5) [%eval 0,75] [%emt 00:00:55]}
42.d7 {(d7) [%eval 0,65] [%emt 00:02:03]} Rc4 {(Rc4) [%eval 0,68] [%emt 00:01:28]}
43.d8=Q {(Qxf6) [%eval 0,65] [%emt 00:05:19]} Rh4 {(Rh4) [%eval 0,77] [%emt 00:00:51]}
44.Rh3 {(Rh3) [%eval 0,54] [%emt 00:01:29]} Qf4 {(Qf4) [%eval 0,93] [%emt 00:00:40]}
45.Kg1 {(Kg1) [%eval 0,65] [%emt 00:06:02]} Qc1 {(Qc1) [%eval 0,93] [%emt 00:01:26]}
46.Kh2 {(Kh2) [%eval 0,65] [%emt 00:04:45]} Qf4 {(Qf4) [%eval 0,102] [%emt 00:00:45]}
47.Kg1 {(Kg1) [%eval 0,66] [%emt 00:02:24]} Qc1 {(Qc1) [%eval 0,103] [%emt 00:02:37]}
48.Kh2 {(Kh2) [%eval 0,99] [%emt 00:00:04]}
1/2-1/2[/pgn]

[Graham Banks]

D32: Queen's Gambit Declined, Tarrasch, von Hennig-Schara gambit

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 cxd4 *

Black's third move is an aggressive bid for central space. After White plays cxd5 and dxc5, Black will be left with an isolated pawn on d5. Such a pawn may be weak, since it can no longer be defended by other pawns, but it grants Black a foothold in the center, and Black's bishops will have unobstructed lines for development. The opening was advocated by the German player Siegbert Tarrasch, who contended that the increased mobility Black enjoys is well worth the inherent weakness of the isolated center pawn. Although many other masters, after the teachings of Wilhelm Steinitz, rejected the Tarrasch Defense out of hand because of the pawn weakness, Tarrasch continued to play his opening while rejecting other variations of the Queen's Gambit,
The Tarrasch Defense is considered sound. Even if Black fails to make use of their mobility and winds up in an inferior endgame, tied to the defense of their isolated pawn, they may be able to hold the draw if they defend accurately.

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

[Graham Banks]

GAME 5

It would appear that Black can't hold onto the pawn. If White wants the pawn, it gets it, so Stockfish took it.
However, in return for the lost pawn, Komodo Dragon had speedier development and space.
The queens came off early, and Komodo Dragon even instigated a series of exchanges, creating a weak White c-pawn, and cramping up the queenside.
Stockfish was confined to total passivity, and in order to break the position open, it had to give back the pawn and go into a bishop + pawns v knight + pawns endgame that was drawn.

[pgn][Event "SF v Komodo Dragon 16CPU"]
[Site "ChessGUI17"]
[Date "2022.06.09"]
[Round "3.1"]
[White "Stockfish 15 64-bit 16CPU"]
[Black "Dragon 3 by Komodo 64-bit 16CPU"]
[Result "1/2-1/2"]
[Time "4:25:58 am"]
[ECO "D32"]
[Opening "Schara-Hennig; Duisburg Gambit, QGD"]
[TimeControl "7200+30"]
[PlyCount "140"]
[Number "5"]
[Termination "GUI adjudication"]
[BlackType "program"]
[WhiteType "program"]
[Variant "normal"]

{ AMD Ryzen 9 5950X 16-Core Processor 3.40 GHz }
1.d4 {[%eval 0,1] [%emt 00:00:00]} d5 {[%eval 0,1] [%emt 00:00:00]}
2.c4 {[%eval 0,1] [%emt 00:00:00]} e6 {[%eval 0,1] [%emt 00:00:00]}
3.Nc3 {[%eval 0,1] [%emt 00:00:00]} c5 {[%eval 0,1] [%emt 00:00:00]}
4.cxd5 {[%eval 0,1] [%emt 00:00:00]} cxd4 {[%eval 0,1] [%emt 00:00:00]}
5.Qa4 {[%eval 61,52] [%emt 00:08:00]} Bd7 {(Bd7) [%eval -84,40] [%emt 00:03:15]}
6.Qxd4 {(Qxd4) [%eval 58,51] [%emt 00:02:02]} exd5 {(exd5) [%eval -64,41] [%emt 00:04:25]}
7.Qxd5 {(Qxd5) [%eval 55,48] [%emt 00:03:31]} Nf6 {(Nf6) [%eval -57,39] [%emt 00:02:38]}
8.Qb3 {(Qd1) [%eval 52,55] [%emt 00:10:21]} Na6 {(Na6) [%eval -69,40] [%emt 00:03:56]}
9.Nf3 {(Nf3) [%eval 47,51] [%emt 00:03:36]} Nc5 {(Nc5) [%eval -68,41] [%emt 00:03:11]}
10.Qc2 {(Qc2) [%eval 41,52] [%emt 00:02:13]} Rc8 {(Rc8) [%eval -53,39] [%emt 00:02:25]}
11.e3 {(e3) [%eval 56,52] [%emt 00:02:02]} a6 {(Na4) [%eval -52,40] [%emt 00:02:51]}
12.Be2 {(Be2) [%eval 52,47] [%emt 00:01:54]} g6 {(g6) [%eval -55,43] [%emt 00:03:04]}
13.O-O {(O-O) [%eval 44,48] [%emt 00:02:10]} Bg7 {(Bg7) [%eval -49,43] [%emt 00:03:54]}
14.Rd1 {(Rd1) [%eval 41,48] [%emt 00:01:54]} O-O {(Qe7) [%eval -46,44] [%emt 00:06:55]}
15.Ne5 {(Ne5) [%eval 47,59] [%emt 00:05:18]} Bf5 {(Bf5) [%eval -45,48] [%emt 00:05:03]}
16.Rxd8 {(Rxd8) [%eval 31,54] [%emt 00:02:23]} Bxc2 {(Bxc2) [%eval -44,47] [%emt 00:02:33]}
17.Rxf8 {(Rxf8) [%eval 21,59] [%emt 00:01:56]} Rxf8 {(Rxf8) [%eval -44,47] [%emt 00:02:25]}
18.Nf3 {(Nf3) [%eval 38,61] [%emt 00:04:10]} Nfe4 {(Nfe4) [%eval -29,50] [%emt 00:04:34]}
19.Nd4 {(Nd4) [%eval 36,57] [%emt 00:01:25]} Nxc3 {(Nxc3) [%eval -29,53] [%emt 00:02:20]}
20.bxc3 {(bxc3) [%eval 21,57] [%emt 00:02:20]} Bd3 {(Bd3) [%eval -27,48] [%emt 00:03:01]}
21.Bxd3 {(Bxd3) [%eval 37,58] [%emt 00:02:10]} Nxd3 {(Nxd3) [%eval -29,50] [%emt 00:05:00]}
22.Kf1 {(Bd2) [%eval 30,57] [%emt 00:01:49]} Rc8 {(Rc8) [%eval -26,51] [%emt 00:02:04]}
23.Bd2 {(Bd2) [%eval 27,56] [%emt 00:02:02]} Nc5 {(Nc5) [%eval -26,54] [%emt 00:02:01]}
24.Rc1 {(Ke2) [%eval 21,56] [%emt 00:03:26]} Na4 {(Na4) [%eval -28,46] [%emt 00:02:20]}
25.Ke2 {(Ke2) [%eval 21,55] [%emt 00:04:26]} Rc4 {(Rc4) [%eval -23,51] [%emt 00:06:32]}
26.Kd3 {(Kd3) [%eval 21,68] [%emt 00:05:56]} b5 {(b5) [%eval -21,49] [%emt 00:01:36]}
27.g4 {(h3) [%eval 25,59] [%emt 00:01:19]} Be5 {(Kf8) [%eval -18,44] [%emt 00:01:54]}
28.h3 {(Be1) [%eval 17,51] [%emt 00:02:48]} f6 {(Nc5) [%eval -24,43] [%emt 00:02:15]}
29.Be1 {(Kc2) [%eval 5,54] [%emt 00:08:26]} Kf7 {(Kf7) [%eval -18,45] [%emt 00:01:46]}
30.f3 {(f3) [%eval 5,49] [%emt 00:04:33]} Rc8 {(Rc8) [%eval -15,47] [%emt 00:02:21]}
31.Rc2 {(Rc2) [%eval 6,160] [%emt 00:04:18]} Nc5 {(Nc5) [%eval -11,45] [%emt 00:01:46]}
32.Kd2 {(Ke2) [%eval 6,62] [%emt 00:01:13]} Na4 {(Na4) [%eval -12,47] [%emt 00:04:50]}
33.Kd3 {(Bf2) [%eval 0,54] [%emt 00:03:57]} Nc5 {(Nc5) [%eval -11,49] [%emt 00:02:52]}
34.Ke2 {(Ke2) [%eval 0,68] [%emt 00:00:53]} Na4 {(Na4) [%eval -11,53] [%emt 00:07:57]}
35.Kd2 {(Kd2) [%eval 0,56] [%emt 00:01:19]} Rc4 {(Rc4) [%eval -9,46] [%emt 00:02:41]}
36.Kd3 {(Kd3) [%eval 0,59] [%emt 00:04:25]} Nc5 {(Nc5) [%eval -9,53] [%emt 00:01:19]}
37.Kd2 {(Ke2) [%eval 0,68] [%emt 00:01:36]} Na4 {(Na4) [%eval -9,44] [%emt 00:01:49]}
38.h4 {(Bh4) [%eval 0,69] [%emt 00:01:13]} h5 {(h5) [%eval -6,45] [%emt 00:01:21]}
39.gxh5 {(gxh5) [%eval 0,62] [%emt 00:01:44]} gxh5 {(gxh5) [%eval -2,50] [%emt 00:01:30]}
40.Bf2 {(f4) [%eval 0,60] [%emt 00:01:11]} Bd6 {(Bb8) [%eval -1,52] [%emt 00:01:19]}
41.Kd3 {(Kd3) [%eval 0,63] [%emt 00:01:29]} Nc5 {(Nc5) [%eval 0,56] [%emt 00:02:08]}
42.Kd2 {(Ke2) [%eval 0,60] [%emt 00:01:26]} Na4 {(Na4) [%eval 0,55] [%emt 00:01:26]}
43.Kd3 {(Nf5) [%eval 0,70] [%emt 00:04:12]} Nc5 {(Nc5) [%eval 0,57] [%emt 00:03:06]}
44.Ke2 {(Ke2) [%eval 0,67] [%emt 00:01:08]} Na4 {(Na4) [%eval 0,61] [%emt 00:01:39]}
45.Be1 {(Be1) [%eval 0,245] [%emt 00:02:45]} Be5 {(Be5) [%eval 0,60] [%emt 00:01:21]}
46.Kd2 {(Nf5) [%eval 0,59] [%emt 00:01:06]} Kg6 {(Nb6) [%eval 0,54] [%emt 00:03:16]}
47.f4 {(Kd1) [%eval 0,70] [%emt 00:01:24]} Bxd4 {(Bxd4) [%eval 0,63] [%emt 00:01:07]}
48.cxd4 {(cxd4) [%eval 0,79] [%emt 00:01:05]} Kf5 {(Kf5) [%eval 0,66] [%emt 00:01:04]}
49.Rxc4 {(Rxc4) [%eval 0,82] [%emt 00:01:22]} bxc4 {(bxc4) [%eval 0,68] [%emt 00:02:00]}
50.d5 {(d5) [%eval 0,82] [%emt 00:01:02]} Ke4 {(Ke4) [%eval 0,68] [%emt 00:00:58]}
51.d6 {(d6) [%eval 0,82] [%emt 00:01:39]} Nc5 {(Nc5) [%eval 0,69] [%emt 00:03:02]}
52.Ke2 {(Kc2) [%eval 0,84] [%emt 00:02:31]} Kd5 {(Kd5) [%eval 0,67] [%emt 00:01:04]}
53.Bb4 {(Bb4) [%eval 0,87] [%emt 00:01:29]} Kxd6 {(Kxd6) [%eval 0,63] [%emt 00:03:45]}
54.e4 {(f5) [%eval 0,83] [%emt 00:01:44]} a5 {(c3) [%eval 0,64] [%emt 00:03:00]}
55.Ba3 {(Ba3) [%eval 0,79] [%emt 00:00:42]} c3 {(c3) [%eval 0,67] [%emt 00:02:25]}
56.f5 {(Bxc5) [%eval 0,80] [%emt 00:00:36]} c2 {(c2) [%eval 0,65] [%emt 00:00:28]}
57.Ke3 {(Ke3) [%eval 0,85] [%emt 00:00:43]} Kd7 {(Kc6) [%eval 0,67] [%emt 00:00:24]}
58.Bc1 {(e5) [%eval 0,86] [%emt 00:01:23]} Kc7 {(Kc6) [%eval 0,67] [%emt 00:00:41]}
59.Bb2 {(Ba3) [%eval 0,76] [%emt 00:01:56]} Kc6 {(Kc6) [%eval 0,66] [%emt 00:00:32]}
60.Bc1 {(e5) [%eval 0,81] [%emt 00:00:17]} a4 {(Kd6) [%eval 0,61] [%emt 00:00:25]}
61.Ba3 {(e5) [%eval 0,84] [%emt 00:00:33]} Nd7 {(Kd7) [%eval 0,67] [%emt 00:00:25]}
62.Kd2 {(Kd2) [%eval 0,84] [%emt 00:01:37]} Nc5 {(Nc5) [%eval 0,67] [%emt 00:00:21]}
63.Ke3 {(Bxc5) [%eval 0,81] [%emt 00:00:15]} Na6 {(Kd7) [%eval 0,66] [%emt 00:00:36]}
64.Bb2 {(Kd4) [%eval 0,80] [%emt 00:00:16]} Nc5 {(Nc5) [%eval 0,69] [%emt 00:00:36]}
65.Bc1 {(Kd2) [%eval 0,79] [%emt 00:00:43]} Nd7 {(Nd7) [%eval 0,67] [%emt 00:00:42]}
66.Kd3 {(Kd4) [%eval 0,72] [%emt 00:00:15]} Nc5 {(Nc5) [%eval 0,70] [%emt 00:00:50]}
67.Kd4 {(Kxc2) [%eval 0,77] [%emt 00:01:35]} Kd6 {(Nd7) [%eval 0,67] [%emt 00:01:18]}
68.Ba3 {(Ba3) [%eval 0,77] [%emt 00:00:30]} Kc6 {(Kc6) [%eval 0,60] [%emt 00:00:17]}
69.Bb2 {(e5) [%eval 0,81] [%emt 00:01:01]} Nd7 {(Nd7) [%eval 0,67] [%emt 00:00:44]}
70.Kd3 {(Bc1) [%eval 0,74] [%emt 00:00:03]} Nc5 {(Nc5) [%eval 0,70] [%emt 00:00:21]}
1/2-1/2[/pgn]

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Draw number 5 of 80 ?