LCZero vs M-Chess

[Martin Hertz]

I've tested some DOS programs against LCZero and it seems, that M-Chess is the most complicated opponent.
I'll continue testing, until M-Chess is not able to win anymore. The conditions for M-Chess are:

- M-Chess 5.0 (1995)
- 3.3 GHz (around 1,000,000 Nodes/sec)
- Maximum hash (10MB)
- Book off
- Ponder on

[pgn]
[Site "play.lczero.org"]
[White "M-Chess, 5 sec"]
[Black "LCZero ID 124 Hard"]
[Result "1-0"]
[PlyCount "123"]

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Bd3 c5 5.Nf3 cxd4 6.Nxd4 Nf6 7.O-O Be7 8.Re1 Nc6
9.Be3 Ng4 10.Nxc6 bxc6 11.Bc5 Be6 12.Rxe6 fxe6 13.Qxg4 Bxc5 14.Qxe6+ Kf8 15.Qxc6 Rc8
16.Qe6 g6 17.Nc3 Kg7 18.Qe5+ Qf6 19.Qxf6+ Kxf6 20.Nxd5+ Ke5 21.Nc3 Rhe8 22.Re1+ Kd6
23.Rxe8 Rxe8 24.Ne4+ Kc6 25.Kf1 Bb6 26.b4 Bc7 27.g3 Re5 28.c4 g5 29.Nf6 Bd8 30.Nxh7 a5
31.b5+ Kd6 32.Nf8 Re8 33.Ng6 Kc5 34.h4 gxh4 35.gxh4 Kd4 36.Be2 Rg8 37.h5 Rg7 38.Nf8
Ke5 39.f4+ Kf6 40.c5 Ke7 41.Ng6+ Kf6 42.Ne5 Ke6 43.Bd3 Rg3 44.h6 Bf6 45.Bc4+ Kf5
46.b6 Kxf4 47.Nd3+ Kf3 48.b7 Rh3 49.Ne1+ Ke4 50.b8=Q Be5 51.Qb7+ Ke3 52.Qb3+ Kd4
53.Nc2+ Kxc5 54.Qb5+ Kd6 55.Qd5+ Kc7 56.Qxe5+ Kc8 57.Be6+ Kb7 58.Qb5+ Kc7 59.Qc5+ Kb7
60.Bd5+ Kb8 61.Qb6+ Kc8 62.Be6# 1-0
[/pgn]


[pgn]
[Site "play.lczero.org"]
[White "LCZero ID 124 Hard"]
[Black "M-Chess, 5 sec"]
[Result "0-1"]
[PlyCount "128"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Qh4 5.Nc3 Bb4 6.Nxc6 Qxe4+ 7.Qe2 Qxe2+ 8.Bxe2
Bxc3+ 9.bxc3 dxc6 10.Bf4 Nf6 11.Bxc7 O-O 12.Bd3 Nd5 13.Bd6 Rd8 14.Bb4 a5 15.Bc5 Nxc3
16.Bb6 Re8+ 17.Kd2 Nd5 18.Bd4 Nf4 19.Rhe1 Rxe1 20.Rxe1 Be6 21.Be4 Bxa2 22.g3 Ne6
23.Bb6 Ra6 24.Be3 a4 25.f4 g6 26.Bd3 b5 27.g4 Bd5 28.f5 Ng7 29.h3 a3 30.Bd4 a2 31.Ba1
Ra8 32.Re5 gxf5 33.gxf5 Nh5 34.Re7 Bg2 35.f6 Nf4 36.Re5 Rd8 37.Rg5+ Kf8 38.Kc3 h6
39.Rg7 Rd6 40.Kb3 Bd5+ 41.c4 bxc4+ 42.Bxc4 Bxc4+ 43.Kxc4 Rd1 44.Bb2 Rc1+ 45.Kb4 Nd3+
46.Kb3 Rb1 47.Kxa2 Rxb2+ 48.Ka1 Rf2 49.Rg3 Nb4 50.Rb3 c5 51.Rc3 Rxf6 52.Rxc5 Rf1+
53.Kb2 Nd3+ 54.Ka3 Nxc5 55.Kb4 Rc1 56.Ka5 f5 57.Kb4 Nd3+ 58.Kb3 f4 59.Ka3 f3 60.Kb3 f2
61.h4 Rc5 62.Ka4 f1=Q 63.Kb3 Qb1+ 64.Ka3 Ra5# 0-1
[/pgn]

[Martin Hertz]

[pgn]
[Site "play.lczero.org"]
[White "M-Chess, 5 sec"]
[Black "LCZero ID 127 Hard"]
[Result "1-0"]
[PlyCount "63"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.Be2 d6 5.d4 cxd4 6.Nxd4 b5 7.a4 b4 8.Na2 Bb7 9.Nxb4
Bxe4 10.O-O Nf6 11.Bg5 h6 12.Bh4 d5 13.Nxa6 Nbd7 14.Bxf6 Nxf6 15.Bb5+ Nd7 16.Nc6 Qb6
17.Ne5 Ra7 18.c4 Be7 19.c5 Bxc5 20.Nxc5 Qxc5 21.Nxd7 Rxd7 22.Rc1 Qb6 23.Rc8+ Ke7
24.Rxh8 Rc7 25.Qg4 Qd4 26.Re8+ Kd6 27.Qg3+ e5 28.Qxg7 Kc5 29.Qf8+ Kb6 30.Qd6+ Ka5
31.b4+ Qxb4 32.Qa6# 1-0
[/pgn]


[pgn]
[Site "play.lczero.org"]
[White "LCZero ID 127 Hard"]
[Black "M-Chess, 5 sec"]
[Result "0-1"]
[PlyCount "104"]

1.c4 e5 2.e3 Nf6 3.Nc3 Bb4 4.Nd5 Nxd5 5.cxd5 O-O 6.a3 Be7 7.Ne2 d6 8.Nc3 Bf5
9.Be2 Nd7 10.e4 Bg6 11.d3 f5 12.exf5 Bxf5 13.O-O Bh4 14.Be3 a6 15.Bg4 Bg6 16.Be6+ Kh8
17.g3 Be7 18.Ne4 Nc5 19.Nxc5 dxc5 20.Rc1 b6 21.b4 cxb4 22.axb4 Bxb4 23.h4 Bd6 24.h5
Bf5 25.Bxf5 Rxf5 26.d4 exd4 27.Qg4 Rxd5 28.Bxd4 Bf8 29.Bb2 Qd7 30.Qf3 c5 31.h6 Rd8
32.Rca1 a5 33.Qf4 Kg8 34.Qe4 Re8 35.Qf3 Rf5 36.Qg4 Rf7 37.Qg5 g6 38.Rfe1 Qd8 39.Qg4
Rxe1+ 40.Rxe1 b5 41.Re2 Qd1+ 42.Kg2 Re7 43.Qf4 Rxe2 44.Qf6 Qd5+ 45.Kf1 Re6 46.Qh8+
Kf7 47.Qxh7+ Ke8 48.Be5 Qh1+ 49.Ke2 Rxe5+ 50.Kd3 c4+ 51.Kc3 Qc1+ 52.Kd4 Qa1# 0-1
[/pgn]

[Werewolf]

GREAT opponent!!

MChess was one of my favourites of all time.

What is your hardware? Are they both at the same time control?

[Martin Hertz]

M-Chess is one of my favorites too. It's running at real DOS on a 3.3 GHz i5, that allows around 1 million nodes/s in average.
The so far used 5 seconds/move gives a search depth of 8-10 plies typically. LCZero is set to hard mode (2000 playouts).
I will increase the thinking time of M-Chess, as soon as 5 seconds are not enough to beat LCZero.

[Werewolf]

M-Chess is one of my favorites too. It's running at real DOS on a 3.3 GHz i5, that allows around 1 million nodes/s in average.
The so far used 5 seconds/move gives a search depth of 8-10 plies typically. LCZero is set to hard mode (2000 playouts).
I will increase the thinking time of M-Chess, as soon as 5 seconds are not enough to beat LCZero.

You're not tempted to run LCZero on your own PC? If you have a decent graphics card, it'll be a lot stronger.

[Martin Hertz]

You're not tempted to run LCZero on your own PC? If you have a decent graphics card, it'll be a lot stronger.

Unfortunately my windows notebook is too old for running LCZero directly.
Maybe I will try it later with better hardware. Thanks for the note.

[Martin Hertz]

[pgn]
Site "play.lczero.org"]
[White "M-Chess, 5 sec"]
[Black "LCZero ID 132 Hard"]
[Result "1-0"]
[PlyCount "53"]

1.e4 c5 2.Nf3 d6 3.Bc4 Nf6 4.e5 dxe5 5.Nxe5 e6 6.O-O Nbd7 7.d4 cxd4 8.Qxd4 Bc5
9.Qc3 Bd6 10.Bf4 Bc5 11.Nd2 h6 12.Nb3 Bb6 13.Rad1 a5 14.Nd4 Bxd4 15.Rxd4 Qb6 16.Rfd1
O-O 17.Nxd7 Nxd7 18.Bxh6 Ne5 19.Rg4 Qc5 20.Rxg7+ Kh8 21.Qh3 Ng6 22.Bg5+ Nh4
23.Qxh4+ Kxg7 24.Bf6+ Kg6 25.Bd3+ Qf5 26.Qg5+ Kh7 27.Qg7# 1-0
[/pgn]


[pgn]
[Site "play.lczero.org"]
[White "LCZero ID 132 Hard"]
[Black "M-Chess, 5 sec"]
[Result "0-1"]
[PlyCount "52"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.c4 Bb4+ 7.Nbd2 Nc6 8.a3 Bxd2+
9.Bxd2 Nxd2 10.Qxd2 O-O 11.cxd5 Qxd5 12.Rd1 Bh3 13.Rc1 Rfe8+ 14.Kd1 Bg4 15.Be2 Rad8
16.Bc4 Bxf3+ 17.gxf3 Qxf3+ 18.Kc2 Rxd4 19.Qc3 Qf5+ 20.Bd3 Rxd3 21.Qxd3 Re2+ 22.Kb1
Qxd3+ 23.Ka2 Nd4 24.Rc3 Qxc3 25.Rb1 Qb3+ 26.Ka1 Nc2# 0-1
[/pgn]

[Vinvin]

The conditions for M-Chess are:

- M-Chess 5.0 (1995)
- 3.3 GHz (around 1,000,000 Nodes/sec)

Amazing !!
I remember the time when M-Chess was running on a fast machine (486DX2@66MHz) at around 5000 nodes/sec

[Werewolf]

The conditions for M-Chess are:

- M-Chess 5.0 (1995)
- 3.3 GHz (around 1,000,000 Nodes/sec)

Amazing !!
I remember the time when M-Chess was running on a fast machine (486DX2@66MHz) at around 5000 nodes/sec

I first got MChess 1.71 running on my 12 MHz 286. It ran at 500 nodes/sec

[Vinvin]

The conditions for M-Chess are:

- M-Chess 5.0 (1995)
- 3.3 GHz (around 1,000,000 Nodes/sec)

Amazing !!
I remember the time when M-Chess was running on a fast machine (486DX2@66MHz) at around 5000 nodes/sec

I first got MChess 1.71 running on my 12 MHz 286. It ran at 500 nodes/sec

In this time, I used an Amiga 500. My first PC compatible was a 486@33MHz around 1992.