CyberNezh BOT now at lichess.org

[carldaman]

https://lichess.org/@/Nezh-BOT

I set up a version of Nezh as a BOT at lichess. If you ever wished go up against Nezhmetdinov, Tal or Alekhine, now you can, but all rolled up into one!

Still working out some kinks, but it's running fine. For now it's playing without a book. Rapid or faster time controls are available.

Enjoy!

[mesilikas]

On which engine CyberNezh based?

[Damir]

My guess Rodent, or Benjamin...

[carldaman]

On which engine CyberNezh based?

Well, Rodent has been a source of inspiration, conceptually. I would look at Nezh as being rather based on great unsung attacking heroes from the past such Rashid Nezhmetdinov and Nicolas Rossolimo, with a nod to Tal and Alekhine's genius as well.

Its strength is substantial and it can take care of any opposition below 2800 Elo, be it human or engine. One of the goals was to reach a level of strength equal to or slightly stronger than the best human GMs. Even more important than strength is the swashbuckling, daring style, of course. Nezh is fearless and can take enormous risks in pursuit of winning. There's no 'draw death' to worry about.

[pgn]
[Event "Rated Blitz game"]
[Site "https://lichess.org/zUGsO9Lg"]
[Date "2020.04.04"]
[White "Nezh-BOT"]
[Black "Alayan"]
[Result "1-0"]
[UTCDate "2020.04.04"]
[UTCTime "23:11:48"]
[WhiteTitle "BOT"]
[Variant "Standard"]
[TimeControl "300+3"]
[ECO "B30"]
[Termination "Normal"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 Qc7 4. O-O a6 5. Bxc6 Qxc6 6. d4 e6 7. Re1 Nf6 8. e5 Nd5 9. c4 Nb6 10. Nbd2 d5 11. exd6 Bxd6 12. Ne4 Nxc4 13. b3 Nb6 14. Bh6 gxh6 15. dxc5 Bxc5 16. Ne5 Qc7 17. Rc1 Qxe5 18. Rxc5 Qg7 19. Nd6+ Ke7 20. Nf5+ Kf6 21. Qa1+ Kg6 22. Nh4# 1-0
[/pgn]

Hats off to Alayan for not being afraid to take on Nezh. The lightning bolt is 14. Bh6!!, a move that leaves a lasting impression.

[zullil]

On which engine CyberNezh based?

Well, Rodent has been a source of inspiration, conceptually. I would look at Nezh as being rather based on great unsung attacking heroes from the past such Rashid Nezhmetdinov and Nicolas Rossolimo, with a nod to Tal and Alekhine's genius as well.

Where can one get the source code for this engine? Or a Linux binary?

[carldaman]

It's private.

[zullil]

It's private.

I see. Who is the author of the program? I've never heard of this engine before.

[carldaman]

I'm only the tester. The author wants to keep a low profile.

[zullil]

I'm only the tester. The author wants to keep a low profile.

I see.

[Ovyron]

ShashChess 5.0 (last stylistic ShashChess) finds Bh6 instantly, thinks capturing the sacrificed Bishop is a mistake:

[d]r1b1k2r/1p3ppp/pnqbp3/2p5/3PN3/1P3N2/P4PPP/R1BQR1K1 w kq -

Engine: ShashChess 5.0 64 (128 MB)
by A. Manzo
17/32 0:02 +5.92 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 Rg8 21.Qxh6 Bd7 22.Qxh7 O-O-O 23.Qxf7 Kb7 24.Rac1 c5 25.h4 Kb8 (8.055.774) 2787
18/28 0:03 +5.99++ 14.Bh6 (9.053.550) 2773
18/28 0:03 +6.05++ 14.Bh6 (9.326.453) 2769
18/28 0:03 +6.05 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 a5 21.Rac1 Bd7 22.Qh4 Rg8 23.Qxh6 O-O-O 24.Qxh7 Kb8 25.Qxf7 (9.341.988) 2767
19/29 0:03 +6.12++ 14.Bh6 (10.855.793) 2779
19/29 0:04 +5.98-- 14.Bh6 Qxe4 (11.320.186) 2771
19/29 0:04 +6.08++ 14.Bh6 (11.832.292) 2774
19/29 0:04 +6.17 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 Bd7 21.Qh4 f6 22.Rac1 O-O-O 23.Re4 Kb7 24.Qxh6 Rf7 25.Qd2 Rdf8 26.Qa5 (12.144.838) 2777
20/31 0:04 +6.10-- 14.Bh6 gxh6 (12.879.206) 2780
20/31 0:05 +6.04-- 14.Bh6 gxh6 (14.112.913) 2786
20/31 0:05 +5.93-- 14.Bh6 gxh6 (15.184.744) 2787
20/32 0:05 +6.02++ 14.Bh6 (15.669.313) 2791
20/32 0:05 +6.21++ 14.Bh6 (16.738.654) 2802
20/32 0:06 +6.28 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 Rg8 21.Qxh6 Bd7 22.Qh4 Rg7 23.Rad1 Kf8 24.Rd3 c5 25.Rg3 (18.171.703) 2804
21/30 0:07 +6.21-- 14.Bh6 gxh6 (19.848.318) 2788
21/30 0:07 +6.15-- 14.Bh6 Be7 (20.327.067) 2789
21/34 0:07 +6.05-- 14.Bh6 gxh6 (21.265.213) 2789
21/34 0:08 +5.90-- 14.Bh6 gxh6 (23.282.516) 2770
21/37 0:09 +5.71-- 14.Bh6 gxh6 (26.607.462) 2759
21/37 0:09 +5.86++ 14.Bh6 (26.979.843) 2756
21/37 0:09 +5.94 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 Kd7 21.Qxh6 Bb7 22.Rac1 Kxd6 23.Red1 Kd7 24.Qf4 Rad8 25.Rxd5+ exd5 26.Qb4 Kc8 27.Rc3 (27.511.383) 2752
22/32 0:11 +5.87-- 14.Bh6 gxh6 (30.691.762) 2733
22/35 0:11 +5.81-- 14.Bh6 gxh6 (32.754.923) 2729
22/35 0:14 +5.82 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 Kd7 21.Qxh6 Bb7 22.Rac1 Rad8 23.Qxh7 Kxd6 24.Qg7 Kd7 25.h4 Kc8 26.h5 Nf4 27.Rcd1 (38.583.583) 2734
23/31 0:16 +5.88++ 14.Bh6 (44.476.224) 2735
23/36 0:17 +5.75-- 14.Bh6 gxh6 (47.291.020) 2731
23/36 0:17 +5.85++ 14.Bh6 (47.899.381) 2730
23/39 0:18 +5.97 14.Bh6 gxh6 15.dxc5 Be7 16.Ne5 Nd5 17.Qh5 Rf8 18.Nxc6 bxc6 19.Nd6+ Bxd6 20.cxd6 Kd7 21.Qxh6 Bb7 22.Rac1 Kxd6 23.Qxh7 Kd7 24.h4 Rae8 25.h5 Kc8 26.Qg7 Rd8 27.Red1 (51.216.627) 2735
24/38 0:22 +5.90-- 14.Bh6 Be7 (62.162.781) 2743
24/38 0:22 +5.97++ 14.Bh6 (63.015.629) 2743
24/38 0:23 +5.97 14.Bh6 Be7 15.Ne5 gxh6 16.Qh5 Rf8 17.Nxc6 bxc6 18.dxc5 Nd5 19.Nd6+ Bxd6 20.cxd6 Kd7 21.Qxh6 Bb7 22.Qxh7 Kxd6 23.Rac1 Kc7 24.Rxe6 Rac8 25.Qg7 Kb8 26.Rd6 Ka8 27.h4 (64.470.340) 2743
25/42 0:35 +5.90-- 14.Bh6 Be7 (97.614.959) 2742
25/42 0:38 +5.83-- 14.Bh6 gxh6 (106.634.625) 2735
25/42 0:47 +5.73-- 14.Bh6 Nd5 (129.162.198) 2715
25/42 0:50 +5.82++ 14.Bh6 (137.556.051) 2714
25/42 0:56 +5.59-- 14.Bh6 Nd5 (154.704.226) 2715
25/42 0:59 +5.80++ 14.Bh6 (161.734.023) 2716
25/42 1:02 +5.79 14.Bh6 Nd5 15.Bxg7 Rg8 16.Be5 Be7 17.dxc5 Bd7 18.Rc1 Rg4 19.Nd4 Rxe4 20.Rxe4 Nc3 21.Nxc6 Nxd1 22.Nxe7 Kxe7 23.Rxd1 Rg8 24.Rf4 Rg6 25.Rxf7+ Kxf7 26.Rxd7+ Kf8 27.f4 (168.777.219) 2713