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============================== My email: jotes@go2.pl



New version chess engine: Perseus 1.1

on


Perseus - UCI Chess Engine
Author: TheRealGioviok

v.1.1:
We beatin' Stash 36 with this one
Testing indicates +87 elo in LTC selfplay testing on a balanced book. Should provide a nice elo boost even at ccrl time controls.
While the Perseus.exe executable should provide a good degree of compatibility with older cpus, it is strongly advised to use a faster more optimized executable. These are Perseus_hashwell.exe for intel based platforms and Perseus_znver2.exe for amd cpus.
For anyone interested in building from source, using clang++ is recomended, as it gives a decent nps speedup.
Till next time ;)

P.S.
we removed thingy++++
it is very sad
but it was just a bug


Perseus 1.1 vs. other engines:
Mochi 20250308 JA4/4+44 Games
Fornax 4.0 JA4/4+44 Games
Admete 1.6.04/4+44 Games
Princhess 0.204/4+44 Games
Lynx 1.9.03/4+24 Games
Pawnocchio 1.3.14151.5/4-14 Games
Nalwald ab11891 JA1/4-24 Games
Bread Engine 1.3.02/2+22 Games
Chessatron 1.3.141592/2+22 Games
Clozza 1.0 JA2/2+22 Games
The Flying Dutchman 1.0 JA2/2+22 Games
Bluebetafish dev-b3b8603 JA2/2+22 Games
Sting Black Hole 101.5/2+12 Games
Bread 1.3.0 JA1.5/2+12 Games
Seer 2.8.0 JA1/2+02 Games
Critter 1.6a1/2+02 Games
Killfish PB 0503250.5/2-12 Games
Contact 12 XL0.5/2-12 Games
Stockfish 20250228 Ivec0.5/2-12 Games
Contact 120.5/2-12 Games
SF-PRO 10.03.20250.5/2-12 Games



 Perseus 1.1 download from page


Games
[Event "2025.03.16.ArenaNewEnginesTest"] [Site "LAPTOP-0R1VTNE6"] [Date "2025.03.19"] [Round "1"] [White "Princhess 0.20"] [Black "Perseus 1.0"] [Result "0-1"] [ECO "B18"] [WhiteElo "3177"] [BlackElo "2400"] [PlyCount "119"] [EventDate "2025.??.??"] 1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 e6 7. Bc4 Nd7 8. O-O Ngf6 9. Bd3 Bxd3 10. Qxd3 Bd6 11. c4 O-O 12. b3 a5 13. Bd2 Qc7 14. Rad1 Rfd8 15. Ne4 Be7 16. Rfe1 h6 17. h3 Nf8 18. Qe2 Nxe4 19. Qxe4 a4 20. b4 a3 21. g3 Nd7 22. Rc1 Nf6 23. Qd3 b6 24. Qe3 Bd6 25. Kg2 Qb7 26. Rb1 b5 27. c5 Bc7 28. Qc3 Qc8 29. Rb3 Nd5 30. Qc1 Qd7 31. Rxa3 Ne7 32. Bc3 Qd5 33. Rxa8 Rxa8 34. a3 f5 35. Bb2 f4 36. Qc2 Nf5 37. Qe2 Re8 38. gxf4 Nh4+ 39. Kg3 g5 40. Bc1 gxf4+ 41. Bxf4 Nf5+ 42. Kh2 Bxf4+ 43. Kg1 Kf7 44. Qd3 Ra8 45. Re2 Qc4 46. Qe4 Rxa3 47. Re3 Rxe3 48. Qxf4 Rxf3 49. Qxf3 Qd5 50. Qg4 Qxd4 51. Qf3 Qxb4 52. Qxc6 Qe1+ 53. Kg2 Nh4+ 54. Kh2 Qxf2+ 55. Kh1 Qe1+ 56. Kh2 Qf2+ 57. Kh1 Nf5 58. Qd7+ Kf6 59. Qd8+ Ke5 60. Qc7+ 0-1 [Event "2025.03.16.ArenaNewEnginesTest"] [Site "LAPTOP-0R1VTNE6"] [Date "2025.03.22"] [Round "2"] [White "Perseus 1.0"] [Black "Princhess 0.20"] [Result "1-0"] [ECO "A28"] [WhiteElo "2400"] [BlackElo "3177"] [PlyCount "102"] [EventDate "2025.??.??"] 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e4 Bb4 5. d3 O-O 6. a3 Bxc3+ 7. bxc3 d6 8. g3 h6 9. Rb1 Ne7 10. Bg2 Ng6 11. O-O Rb8 12. a4 Bg4 13. h3 Bd7 14. Ra1 a5 15. Be3 b6 16. Re1 Qc8 17. Kh2 Qe8 18. Nd2 Kh8 19. d4 Bc6 20. f4 exf4 21. gxf4 Kh7 22. Bh1 Rg8 23. Qe2 Qd7 24. f5 Nf8 25. Bf2 Re8 26. Bh4 Kh8 27. Bxf6 gxf6 28. Qh5 Nh7 29. Qxh6 Bxa4 30. Nf1 Bc2 31. Qh4 Rg5 32. Ne3 Bb3 33. Bf3 Reg8 34. Qf4 Qc6 35. h4 R5g7 36. Ng4 Qxc4 37. Rac1 a4 38. Nh6 a3 39. Nxg8 Rxg8 40. Qd2 a2 41. Ra1 d5 42. Rg1 dxe4 43. Bxe4 Qb5 44. Rxg8+ Kxg8 45. Rg1+ Kf8 46. Re1 Qa5 47. Qh6+ Ke7 48. Bb7+ Be6 49. Qxh7 Qxf5 50. Qxf5 a1=Q 51. Qxe6+ fxe6 1-0 [Event "2025.03.23.ArenaLenovoNewEnginesTest"] [Site "LENOVO-PC"] [Date "2025.03.24"] [Round "1"] [White "Princhess 0.20"] [Black "Perseus 1.0"] [Result "0-1"] [ECO "C67"] [WhiteElo "3177"] [BlackElo "2400"] [PlyCount "133"] [EventDate "2025.??.??"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Rd1+ Ke8 10. b3 Be7 11. Bg5 Bxg5 12. Nxg5 h6 13. Ne4 Ke7 14. Nbc3 b6 15. f4 Bb7 16. Kf2 Rad8 17. Ng3 Nxg3 18. Kxg3 Ke6 19. h4 Rhg8 20. h5 a6 21. Kf2 Kf5 22. Ke3 Kg4 23. a4 a5 24. Rh1 c5 25. Rad1 f6 26. e6 Bc6 27. Rxd8 Rxd8 28. Re1 Re8 29. Kd3 Bxg2 30. f5 Kxf5 31. e7 c6 32. Rg1 Bf3 33. Rf1 Kg4 34. Rg1+ Kf5 35. Rf1 Kg4 36. Rg1+ Kf4 37. Rxg7 Bxh5 38. Ne4 Ke5 39. Ng3 Bf3 40. Ke3 Bd5 41. c4 Be6 42. Ke2 b5 43. cxb5 cxb5 44. axb5 Bxb3 45. Kd3 f5 46. Rh7 a4 47. Ne2 Be6 48. Kc3 a3 49. Nc1 Kf6 50. Rxh6+ Kxe7 51. Rh7+ Bf7 52. Rh6 Rg8 53. Ra6 Rg3+ 54. Kd2 a2 55. b6 Kd6 56. Nxa2 Bxa2 57. b7+ Kc7 58. Ra5 Kxb7 59. Rxc5 Be6 60. Ke2 Bd7 61. Rc4 Bb5 62. Kf2 Bxc4 63. Kxg3 Bd5 64. Kf4 Be4 65. Ke5 Kc7 66. Kf4 Kd6 67. Ke3 0-1 [Event "2025.03.23.ArenaLenovoNewEnginesTest"] [Site "LENOVO-PC"] [Date "2025.03.24"] [Round "2"] [White "Perseus 1.0"] [Black "Princhess 0.20"] [Result "1-0"] [ECO "A28"] [WhiteElo "2400"] [BlackElo "3177"] [PlyCount "110"] [EventDate "2025.??.??"] 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. Qc2 d6 6. d3 O-O 7. Be2 Bxc3+ 8. bxc3 Re8 9. Nd2 Bg4 10. f3 Be6 11. O-O b6 12. d4 Na5 13. Bd3 h6 14. Ba3 Bd7 15. Rae1 c5 16. Rb1 cxd4 17. cxd4 exd4 18. e4 Rc8 19. Bxd6 Be6 20. Ba3 Qc7 21. Rfc1 Qf4 22. Re1 Nc6 23. g3 Qc7 24. f4 Ng4 25. c5 g5 26. f5 Bd7 27. Rec1 b5 28. Bxb5 Nce5 29. Qa4 Bxb5 30. Qxb5 Qe7 31. Qa6 Rc6 32. Qa4 Rd8 33. Rb5 Kh7 34. Rcb1 Qf6 35. Rb7 h5 36. h3 Ne3 37. Rxa7 g4 38. h4 Qh6 39. Re7 Ra6 40. Qb3 Qf6 41. Rb7 Rc6 42. Rb6 Rd7 43. Qa4 Rdc7 44. Qa8 Nf3+ 45. Nxf3 gxf3 46. Rxc6 Rxc6 47. Rb7 Kg7 48. Qb8 Ra6 49. Bb2 Nd1 50. Qf4 f2+ 51. Kf1 Ne3+ 52. Qxe3 dxe3 53. Bxf6+ Kxf6 54. Rb6+ Ke5 55. Rxa6 Kxe4 1-0

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