New engine releases 2026 H2

[Gabor Szots]

Crustik 0.2.0

Dejon Eltahan (New Zealand)
https://github.com/Dejon51/Crustik

[Gabor Szots]

ZeroG 1.0.0

Kristian Ekman (Sweden)
https://github.com/KristianEkman/ZeroG

[Gabor Szots]

Pawnstar 0.13

Jonny Reckless (USA)
https://github.com/jonny-reckless/pawnstar

[Gabor Szots]

ShakeyBot 2.0.0

Daniel Collins (South Africa)
https://github.com/djcollins/ShakeyBot

[Gabor Szots]

Onyx 1.6

https://github.com/dylan2554/onyx

Note that this is what previously was called Sable 1.6, a duplicate name. To avoid confusion, the author renamed his engine.

[Frank Quisinsky]

Gabor,

helpful for me!
Thank you!!

Best
Frank

[Dicaste]

Eonego 0.0.4 Written in F# for fun with bunch of LLMs.

https://github.com/Houijasu/Eonego

[Graham Banks]

Eonego 0.0.4 Written in F# for fun with bunch of LLMs.

https://github.com/Houijasu/Eonego

Estimated strength?

[Dicaste]

Eonego 0.0.4 Written in F# for fun with bunch of LLMs.

https://github.com/Houijasu/Eonego

Estimated strength?

I didn't test the strength properly but if you need a number probably it's around 3200-3300

[pgn][Event "LAPTOP-RTA0OKO2, Blitz 5.0min+3.0sec"]
[Site "LAPTOP-RTA0OKO2"]
[Date "2026.06.30"]
[Round "2"]
[White "Stockfish 18"]
[Black "Eonego"]
[Result "1/2-1/2"]
[Annotator "0.24;0.15"]
[ECO "B31"]
[WhiteFideId "-1"]
[BlackFideId "-1"]
[PlyCount "159"]
[GameId "2326804815884379"]
[TimeControl "300+3"]

{13th Gen Intel(R) Core(TM) i9-13980HX 2419 MHz W=43.9 plies; 12.776,00 kN/s B=22.1 plies; 3.688,00 kN/s} 1. e4 {[%eval 24,40] [%emt 0:00:36.95] Both last book move} c5 {[%eval 15,23] [%emt 0:00:22.11]} 2. Nf3 {[%eval 42,26] [%emt 0:00:03.28]} Nc6 {[%eval 16,23] [%emt 0:00:38.05]} 3. Bb5 {[%eval 45,27] [%emt 0:00:04.56] (d4)} g6 {[%eval 20,21] [%emt 0:00:14.84]} 4. O-O {[%eval 33,38] [%emt 0:00:49.59]} Bg7 {[%eval 15,24] [%emt 0:00:12.17]} 5. Bxc6 {[%eval 34,37] [%emt 0:00:14.16]} bxc6 {[%eval 14,24] [%emt 0:00:39.29]} 6. Re1 {[%eval 29,28] [%emt 0:00:04.13]} Qc7 {[%eval 22,22] [%emt 0:00:34.53]} 7. h3 {[%eval 26,37] [%emt 0:00:41.61]} d6 {[%eval 17,23] [%emt 0:00:08.53]} 8. Na3 {[%eval 26,39] [%emt 0:00:16.49] (d3)} Rb8 {[%eval 16,22] [%emt 0:00:11.34] (Nh6)} 9. Qe2 {[%eval 29,32] [%emt 0:00:28.09] (c3)} e5 {[%eval 10,21] [%emt 0:00:07.34]} 10. Qd3 {[%eval 25,26] [%emt 0:00:02.81]} Nf6 {[%eval 19,22] [%emt 0:00:09.72]} 11. Nc4 {[%eval 22,33] [%emt 0:00:04.14]} Bf8 {[%eval 13,22] [%emt 0:00:08.13] (Ke7)} 12. c3 {[%eval 25,30] [%emt 0:00:07.10] (a3)} Nd7 {[%eval 12,21] [%emt 0:00:07.12]} 13. a3 {[%eval 33,34] [%emt 0:00:12.42] (b4)} Be7 {[%eval 4,21] [%emt 0:00:11.99]} 14. Qe2 {[%eval 18,37] [%emt 0:00:53.05] (b4)} O-O {[%eval 9,23] [%emt 0:00:09.17]} 15. d3 {[%eval 18,36] [%emt 0:00:03.97]} Ba6 {[%eval 12,22] [%emt 0:00:19.24] (Re8)} 16. Bh6 {[%eval 22,34] [%emt 0:00:18.58]} Rfc8 {[%eval 14,22] [%emt 0:00:06.47] (Rfe8)} 17. b4 {[%eval 26,27] [%emt 0:00:03]} Bxc4 {[%eval 11,21] [%emt 0:00:06.33] (Bf8)} 18. dxc4 {[%eval 43,26] [%emt 0:00:03.72]} Bf8 {[%eval 11,22] [%emt 0:00:05.31]} 19. Be3 {[%eval 46,27] [%emt 0:00:03.21] (Bxf8)} Rb7 {[%eval 7,21] [%emt 0:00:06.72] (Nf6)} 20. Reb1 {[%eval 34,35] [%emt 0:00:40.42] (Red1)} h5 {[%eval 8,17] [%emt 0:00:09.02] (Rcb8)} 21. Nd2 {[%eval 51,22] [%emt 0:00:01.33] (Qc2)} Nf6 {[%eval 21,19] [%emt 0:00:10.08] (Be7)} 22. Qf3 {[%eval 40,30] [%emt 0:00:10.72]} Be7 {[%eval 19,19] [%emt 0:00:09.03] (Ne8)} 23. Nb3 {[%eval 40,23] [%emt 0:00:02]} Nd7 {[%eval 19,18] [%emt 0:00:05.61] (Ne8)} 24. Qe2 {[%eval 42,25] [%emt 0:00:03.13] (Rb2)} Rbb8 {[%eval 30,18] [%emt 0:00:04.27]} 25. Nd2 {[%eval 42,23] [%emt 0:00:03.36] (Rd1)} Rb7 {[%eval 9,19] [%emt 0:00:04.28] (Nf6)} 26. Nb3 {[%eval 39,25] [%emt 0:00:01.88] (Qd1)} Rbb8 {[%eval 0,35] [%emt 0:00:05.61]} 27. Rf1 {[%eval 39,27] [%emt 0:00:03.27]} a6 {[%eval 20,17] [%emt 0:00:08.79]} 28. Rab1 {[%eval 38,27] [%emt 0:00:03.62] (Qd3)} Nf8 {[%eval 13,18] [%emt 0:00:05.52] (Rd8)} 29. f4 {[%eval 50,21] [%emt 0:00:00.58] (Na5)} exf4 {[%eval 27,21] [%emt 0:00:11.36]} 30. Bxf4 {[%eval 50,22] [%emt 0:00:00.92]} Ne6 {[%eval 23,20] [%emt 0:00:06.56]} 31. Bh2 {[%eval 46,27] [%emt 0:00:06.42] (Bg3)} cxb4 {[%eval 17,20] [%emt 0:00:04.55]} 32. cxb4 {[%eval 46,23] [%emt 0:00:01.50]} c5 {[%eval 16,19] [%emt 0:00:03.58]} 33. Nd2 {[%eval 34,23] [%emt 0:00:02.16]} cxb4 {[%eval 20,20] [%emt 0:00:10.83]} 34. axb4 {[%eval 32,20] [%emt 0:00:00.98]} Qd7 {[%eval 25,19] [%emt 0:00:08.20] (Qc6)} 35. Kh1 {[%eval 50,22] [%emt 0:00:01.40]} Rb7 {[%eval 33,19] [%emt 0:00:04.56]} 36. Qf2 {[%eval 23,24] [%emt 0:00:10.72] (Qd3)} Bf8 {[%eval 23,18] [%emt 0:00:06.91]} 37. Rb3 {[%eval 13,23] [%emt 0:00:04.11]} Bh6 {[%eval 4,17] [%emt 0:00:04.22] (Rd8)} 38. Rf3 {[%eval 11,20] [%emt 0:00:00.78]} Rd8 {[%eval 22,17] [%emt 0:00:04.36]} 39. Rd3 {[%eval 8,24] [%emt 0:00:02.02]} Qc6 {[%eval 9,20] [%emt 0:00:04.08]} 40. e5 {[%eval 24,27] [%emt 0:00:02.34]} dxe5 {[%eval 8,19] [%emt 0:00:04.13]} 41. Rxd8+ {[%eval 12,29] [%emt 0:00:01.20]} Nxd8 {[%eval 10,22] [%emt 0:00:03.48]} 42. Bxe5 {[%eval 9,27] [%emt 0:00:01.09]} Ne6 {[%eval 10,20] [%emt 0:00:02.91]} 43. Rb1 {[%eval 0,31] [%emt 0:00:03.20]} Bg7 {[%eval 7,18] [%emt 0:00:03.16]} 44. Qe3 {[%eval 0,40] [%emt 0:00:04.31] (Qe1)} Rd7 {[%eval 11,20] [%emt 0:00:03.32] (Bxe5)} 45. Qf3 {[%eval 0,25] [%emt 0:00:00.86]} Nd8 {[%eval 6,21] [%emt 0:00:03.31] (Qxf3)} 46. Bxg7 {[%eval 0,44] [%emt 0:00:03.71]} Qxf3 {[%eval 5,22] [%emt 0:00:02.86] (Kxg7)} 47. Nxf3 {[%eval 4,32] [%emt 0:00:01.11]} Kxg7 {[%eval 5,18] [%emt 0:00:03.17]} 48. b5 {[%eval 6,33] [%emt 0:00:01.52] (Kg1)} axb5 {[%eval 5,22] [%emt 0:00:02.63]} 49. cxb5 {[%eval 7,37] [%emt 0:00:01.75]} Nb7 {[%eval 4,21] [%emt 0:00:02.97] (Kf6)} 50. b6 {[%eval 0,56] [%emt 0:00:02.36]} Kf8 {[%eval 4,20] [%emt 0:00:02.69] (Kf6)} 51. Kh2 {[%eval 1,43] [%emt 0:00:02.07]} Rd5 {[%eval 5,23] [%emt 0:00:03.30] (Ke7)} 52. Rb2 {[%eval 3,39] [%emt 0:00:04.05] (h4)} Ke7 {[%eval 4,20] [%emt 0:00:03.27]} 53. Kg3 {[%eval 0,71] [%emt 0:00:01.55]} Rc5 {[%eval 4,19] [%emt 0:00:03.27] (Ra5)} 54. Nd4 {[%eval 0,65] [%emt 0:00:03.52]} Rc4 {[%eval 3,22] [%emt 0:00:02.85]} 55. Nf3 {[%eval 0,66] [%emt 0:00:14.84] (Nb5)} Rc5 {[%eval 0,30] [%emt 0:00:02.64]} 56. Kf4 {[%eval 0,72] [%emt 0:00:00.66]} Rf5+ {[%eval 4,22] [%emt 0:00:03.27]} 57. Ke3 {[%eval 0,49] [%emt 0:00:00.86]} Kd6 {[%eval 3,21] [%emt 0:00:02.73]} 58. Nd4 {[%eval 0,65] [%emt 0:00:01.44] (Rb4)} Rc5 {[%eval 3,20] [%emt 0:00:03.30] (Ra5)} 59. Rd2 {[%eval 0,56] [%emt 0:00:02.16] (Nb5+)} Re5+ {[%eval 3,21] [%emt 0:00:02.91]} 60. Kf4 {[%eval 0,81] [%emt 0:00:04.98]} g5+ {[%eval 3,23] [%emt 0:00:02.89]} 61. Kg3 {[%eval 0,75] [%emt 0:00:01.35]} Kc5 {[%eval 3,23] [%emt 0:00:03.19]} 62. Nf3 {[%eval 0,66] [%emt 0:00:01.36]} Rf5 {[%eval 3,21] [%emt 0:00:02.88]} 63. Rb2 {[%eval 0,69] [%emt 0:00:01.70]} Rd5 {[%eval 3,21] [%emt 0:00:03.03] (f6)} 64. Nd2 {[%eval 0,59] [%emt 0:00:01.66] (h4)} Kc6 {[%eval 3,19] [%emt 0:00:03.25]} 65. Ne4 {[%eval 0,81] [%emt 0:00:02.81] (Kh2)} h4+ {[%eval 3,21] [%emt 0:00:02.70]} 66. Kf2 {[%eval 0,108] [%emt 0:00:05.90] (Kh2)} Rf5+ {[%eval 3,20] [%emt 0:00:03.13] (Re5)} 67. Ke2 {[%eval 0,106] [%emt 0:00:11.54] (Kg1)} Re5 {[%eval 3,18] [%emt 0:00:02.88]} 68. Kd3 {[%eval 0,53] [%emt 0:00:00.55]} Rd5+ {[%eval 0,25] [%emt 0:00:03.27] (Nd8)} 69. Ke3 {[%eval 0,67] [%emt 0:00:01.20] (Ke2)} Re5 {[%eval 0,20] [%emt 0:00:02.89] (Nd8)} 70. Kf3 {[%eval 0,68] [%emt 0:00:01.08] (Rc2+)} Rf5+ {[%eval 0,31] [%emt 0:00:02.88]} 71. Ke2 {[%eval 0,58] [%emt 0:00:02.77] (Ke3)} Re5 {[%eval 0,33] [%emt 0:00:03.26]} 72. Kf3 {[%eval 0,54] [%emt 0:00:01.85]} Rf5+ {[%eval 0,34] [%emt 0:00:02.64]} 73. Ke3 {[%eval 0,64] [%emt 0:00:01.70]} Re5 {[%eval 0,36] [%emt 0:00:03.28]} 74. Kd4 {[%eval 0,86] [%emt 0:00:03.11]} Rd5+ {[%eval 0,26] [%emt 0:00:02.87]} 75. Kc4 {[%eval 0,63] [%emt 0:00:01.45] (Kc3)} Re5 {[%eval 0,24] [%emt 0:00:03.28]} 76. Kd3 {[%eval 0,79] [%emt 0:00:02.63]} Rd5+ {[%eval 0,29] [%emt 0:00:02.88]} 77. Kc3 {[%eval 0,50] [%emt 0:00:02.17]} Re5 {[%eval 0,26] [%emt 0:00:02.86] (Ra5)} 78. Kd4 {[%eval 0,58] [%emt 0:00:03.38] (Rb4)} Rd5+ {[%eval 0,36] [%emt 0:00:02.76] (Ra5)} 79. Kc4 {[%eval 0,66] [%emt 0:00:09.88]} Re5 {[%eval 0,30] [%emt 0:00:03.30]} 80. Kd3 {[%eval 0,83] [%emt 0:00:08.24] Draw accepted} 1/2-1/2

[/pgn]

[op12no2]

Cwtch 6

https://github.com/op12no2/cwtch/releases/tag/6