Ember - new UCI engine written on Rust

[DreamerExx]

Awesome
[pgn][Event "My Tournament"]
[Site "?"]
[Date "2026.06.17"]
[Round "2"]
[White "EmberNNUE"]
[Black "Naum"]
[Result "1-0"]
[ECO "D07"]
[GameDuration "00:00:29"]
[GameEndTime "2026-06-17T10:28:44.159 RTZ 2 (зима)"]
[GameStartTime "2026-06-17T10:28:14.187 RTZ 2 (зима)"]
[Opening "Queen's Gambit declined"]
[PlyCount "129"]
[TimeControl "8+0.08"]
[Variation "Chigorin defense"]

1. d4 {+0.49/1 0.001s} d5 {-0.23/13 0.23s} 2. c4 {+0.31/1 0s}
Nc6 {-0.03/11 0.23s} 3. Nc3 {+1.15/1 0s} e6 {-0.12/11 0.19s}
4. Nf3 {+1.12/13 0.32s} Nf6 {-0.05/12 0.24s} 5. Bg5 {+1.15/11 0.32s}
Bb4 {+0.22/11 0.19s} 6. e3 {+1.16/12 0.31s} O-O {+0.03/12 0.33s}
7. Rc1 {+1.65/10 0.30s} h6 {+0.06/11 0.46s} 8. Bh4 {+1.69/11 0.29s}
Re8 {+0.07/11 0.66s} 9. a3 {+1.29/9 0.29s} Bxc3+ {-0.13/11 0.31s}
10. Rxc3 {+1.32/13 0.28s} g5 {-0.25/11 0.29s} 11. Bg3 {+2.44/13 0.28s}
Ne4 {-0.17/11 0.13s} 12. Rc1 {+1.93/11 0.27s} h5 {-0.07/10 0.13s}
13. h3 {+2.32/9 0.26s} Nxg3 {-0.28/10 0.51s} 14. fxg3 {+1.92/10 0.26s}
e5 {-0.19/10 0.13s} 15. cxd5 {+2.91/9 0.25s} Qxd5 {-0.27/11 0.12s}
16. Bc4 {+3.56/8 0.25s} Qa5+ {-0.16/10 0.32s} 17. Nd2 {+3.56/9 0.24s}
exd4 {-1.17/10 0.51s} 18. O-O {+3.56/7 0.24s} Be6 {-1.23/10 0.23s}
19. Ne4 {+3.22/7 0.23s} Qe5 {-0.58/10 0.18s} 20. Nf6+ {+2.80/7 0.23s}
Kg7 {-0.79/11 0.13s} 21. Nxe8+ {+3.64/6 0.22s} Rxe8 {-0.79/6 0.016s}
22. exd4 {+3.10/8 0.22s} Qxd4+ {-0.84/12 0.17s} 23. Kh2 {+3.68/9 0.21s}
Qxd1 {-0.69/11 0.13s} 24. Rfxd1 {+4.30/10 0.21s} Bxc4 {-0.66/12 0.067s}
25. Rxc4 {+4.21/11 0.20s} Kf6 {-0.69/13 0.20s} 26. Rc5 {+4.91/8 0.20s}
Re2 {-0.74/13 0.16s} 27. b4 {+4.52/7 0.20s} Re7 {-1.12/12 0.21s}
28. Rdc1 {+5.21/8 0.19s} a6 {-1.51/11 0.081s} 29. h4 {+5.97/8 0.19s}
gxh4 {-1.48/12 0.082s} 30. gxh4 {+5.94/8 0.19s} Re3 {-1.49/13 0.092s}
31. R1c3 {+6.84/8 0.18s} Rxc3 {-1.53/14 0.065s} 32. Rxc3 {+5.78/10 0.18s}
Ke6 {-1.98/14 0.19s} 33. Rc5 {+7.14/9 0.18s} f5 {-2.05/14 0.083s}
34. Kh3 {+6.74/9 0.17s} Kf6 {-2.43/12 0.077s} 35. Kg3 {+7.84/9 0.17s}
Ke6 {-2.58/13 0.12s} 36. Kf4 {+9.20/9 0.17s} Ne7 {-2.65/14 0.071s}
37. Kg5 {+9.15/9 0.17s} c6 {-2.76/14 0.14s} 38. Rc2 {+9.09/8 0.16s}
Nd5 {-2.81/12 0.095s} 39. Re2+ {+9.92/9 0.16s} Kd6 {-3.19/13 0.26s}
40. Kxf5 {+9.63/8 0.16s} b6 {-3.27/14 0.23s} 41. Re6+ {+9.96/6 0.15s}
Kd7 {-3.27/13 0.19s} 42. g3 {+9.70/8 0.15s} Nc3 {-3.02/13 0.18s}
43. Re3 {+10.70/8 0.15s} Nd5 {-3.20/14 0.15s} 44. Re5 {+10.66/8 0.15s}
b5 {-3.37/12 0.12s} 45. Kg6 {+11.88/9 0.15s} Nb6 {-4.13/13 0.18s}
46. Rxh5 {+14.72/8 0.14s} Nc4 {-4.17/13 0.14s} 47. Rg5 {+15.69/8 0.14s}
a5 {-6.23/11 0.17s} 48. h5 {+16.34/10 0.14s} axb4 {-7.22/11 0.14s}
49. axb4 {+17.34/8 0.14s} Ke6 {-10.12/12 0.17s} 50. h6 {+17.41/8 0.14s}
Nd6 {-10.14/12 0.17s} 51. h7 {+17.84/8 0.14s} Nf7 {-10.19/12 0.091s}
52. Rh5 {+18.63/6 0.13s} Ke7 {-10.19/13 0.17s} 53. Rf5 {+21.42/8 0.13s}
Nh8+ {-10.21/10 0.099s} 54. Kg7 {+22.61/10 0.13s} Ke6 {-10.20/10 0.096s}
55. g4 {+23.88/9 0.13s} c5 {-M24/10 0.17s} 56. Kxh8 {+28.23/9 0.13s}
c4 {-M22/9 0.067s} 57. Kg7 {+29.08/7 0.13s} Kd6 {-M16/8 0.027s}
58. Kf6 {+34.06/9 0.12s} Kc6 {-M16/7 0.023s} 59. h8=Q {+46.33/5 0.12s}
Kb6 {-M14/5 0.018s} 60. Qb8+ {+47.20/5 0.12s} Ka6 {-M10/3 0.016s}
61. Qxb5+ {+47.39/5 0.12s} Ka7 {-M8/3 0.016s} 62. Qd7+ {+M7/6 0.12s}
Ka8 {-M8/3 0.015s} 63. Qc8+ {+M5/6 0.12s} Ka7 {-M4/3 0.016s}
64. Qc7+ {+M3/6 0.12s} Ka6 {-M2/3 0.015s} 65. b5# {+M1/6 0.12s, White mates} 1-0[/pgn]

[DreamerExx]

RELEASED!!!
I present to you Ember 1.0.0. According to my measurements, it has around 2700 Elo.
Release link: https://github.com/ExxDreamerCode/Ember ... tag/V1.0.0

[ericlangedijk]

I played a few games against my engine.
Ember plays quite ok

I did not have a look at the code (I avoid Rust since my own traumatic experience with it).
I would turn off the openingsbook by default. But that is personal.

[DreamerExx]

I played a few games against my engine.
Ember plays quite ok

I did not have a look at the code (I avoid Rust since my own traumatic experience with it).
I would turn off the openingsbook by default. But that is personal.

Thanks for the feedback!

[DreamerExx]

I played a few games against my engine.
Ember plays quite ok

I did not have a look at the code (I avoid Rust since my own traumatic experience with it).
I would turn off the openingsbook by default. But that is personal.

What's the score?