Supernova 2.4

[Dark Knight]

Hi all!

I'm glad to announce that Supernova 2.4 is released.
https://github.com/MichaeltheCoder7/Sup ... s/tag/v2.4

Changes:

Added lazy SMP. Supernova can now use more than one CPU when thinking!
Fixed a Zobrist hashing bug regarding en passant.
Fixed an issue in static exchange evaluation.
Various optimizations.
Changed data type in the 8x8 board.
Encoded castling rights.
Made quit command more stable.
Compiled with GCC 11.2.

Testing Results:

Supernova 2.4 (4 CPUs) vs Supernova 2.3:
Time control: 10+0.1
Games: 910
Elo difference: 152.2 +/- 18.1

Supernova 2.4 (1 CPU) vs Supernova 2.3:
Time control: 10+0.1
Games: 3000
Elo difference: 17.2 +/- 9.1

Please let me know if you found any issues or bugs.

[CMCanavessi]

Plans for FRC support?

[Dark Knight]

Plans for FRC support?

Not planning for that at the moment. It might be complicated since I need another evaluation for FRC.

[Rebel]

Gauntlet Supernova 2.4

Games : 1000

Elo Pool : 2710

Progress can be followed at - http://rebel13.nl/b/grl.htm

Page refreshes itself every 30 seconds.

[Rebel]

Supernova 2.4 : -7 elo

Within the error bars.

Details in the archive - https://prodeo.actieforum.com/t358p25-g ... sults#4497

[Dark Knight]

Supernova 2.4 : -7 elo

Within the error bars.

Details in the archive - https://prodeo.actieforum.com/t358p25-g ... sults#4497

Thanks for testing. Unfortunately, with 1 CPU, elo gain is not much so it needs a lot more games to be accurate. It's probably more worthwhile to test with 4 CPUs.

[Chessqueen]

Supernova 2.4 : -7 elo

Within the error bars.

Details in the archive - https://prodeo.actieforum.com/t358p25-g ... sults#4497

Thanks for testing. Unfortunately, with 1 CPU, elo gain is not much so it needs a lot more games to be accurate. It's probably more worthwhile to test with 4 CPUs.

Here is an interesting game between similar rated programs Shredder8 is from 2003, but is still a great program

[pgn][Event ", Blitz:10'+5""]
[Site "?"]
[Date "2021.09.15"]
[Round "1"]
[White "Supernova 2.4"]
[Black "Shredder 8"]
[Result "0-1"]
[ECO "D78"]
[WhiteElo "2750"]
[BlackElo "2800"]
[Annotator "0.38;0.00"]
[PlyCount "98"]
[TimeControl "600+5"]

{W=38.5 ply; 796kN/s B=15.8 ply; 6,590kN/s} 1. d4 {[%emt 0:00:00]} Nf6 {
[%emt 0:00:00]} 2. Nf3 {[%emt 0:00:00]} d5 {[%emt 0:00:00]} 3. g3 {
[%emt 0:00:00]} g6 {[%emt 0:00:00]} 4. Bg2 {[%emt 0:00:00]} Bg7 {[%emt 0:00:00]
} 5. O-O {[%emt 0:00:00]} O-O {[%emt 0:00:00]} 6. c4 {[%emt 0:00:00]} dxc4 {
[%emt 0:00:00]} 7. Nbd2 {[%emt 0:00:00]} c6 {[%emt 0:00:00]} 8. Nxc4 {
[%emt 0:00:00]} Be6 {[%emt 0:00:00]} 9. Qc2 {Both last book move [%emt 0:00:00]
} Qd5 {[%eval 0,17] [%emt 0:00:26]} 10. b3 {(Nce5) [%eval 38,24] [%emt 0:00:31]
} Bf5 {(Nbd7) [%eval 26,17] [%emt 0:00:38]} 11. Qd1 {
(Qd2) [%eval 32,24] [%emt 0:00:30]} Be4 {[%eval 19,18] [%emt 0:00:32]} 12. Ncd2
{[%eval 35,25] [%emt 0:00:29]} Bf5 {(Bxf3) [%eval 33,18] [%emt 0:00:27]} 13. e3
{(Bb2) [%eval 32,23] [%emt 0:00:28]} Nbd7 {(Be6) [%eval 28,17] [%emt 0:00:30]}
14. Ba3 {(Nh4) [%eval 29,25] [%emt 0:00:27]} Rfe8 {[%eval 40,17] [%emt 0:00:22]
} 15. Nh4 {[%eval 28,25] [%emt 0:00:22]} Be4 {[%eval 53,18] [%emt 0:00:25]} 16.
Nxe4 {[%eval 31,25] [%emt 0:00:22]} Nxe4 {[%eval 51,19] [%emt 0:00:23]} 17. f3
{(Qc2) [%eval 27,26] [%emt 0:00:21]} Nd6 {[%eval 8,16] [%emt 0:00:19]} 18. f4 {
[%eval 22,25] [%emt 0:00:20]} Qa5 {[%eval 19,17] [%emt 0:00:25]} 19. Bc1 {
(Bb2) [%eval 16,24] [%emt 0:00:20]} c5 {(e6) [%eval -15,16] [%emt 0:00:17]} 20.
Bb2 {[%eval 0,21] [%emt 0:00:19]} cxd4 {[%eval -2,15] [%emt 0:00:16]} 21. Bxd4
{[%eval 13,21] [%emt 0:00:02]} Bf6 {[%eval -5,17] [%emt 0:00:25]} 22. Qe1 {
(Rc1) [%eval 12,23] [%emt 0:00:19]} Qa6 {(Qb5) [%eval -9,15] [%emt 0:00:09]}
23. Qb4 {[%eval 11,24] [%emt 0:00:19]} Rac8 {
(Bxd4) [%eval -8,16] [%emt 0:00:22]} 24. Bxf6 {
(Rf2) [%eval 38,26] [%emt 0:00:18]} exf6 {[%eval -27,17] [%emt 0:00:18]} 25.
Rfd1 {(Qd4) [%eval 13,27] [%emt 0:00:18]} Nc5 {[%eval -4,18] [%emt 0:00:26]}
26. Bf1 {[%eval 13,28] [%emt 0:00:17]} Qc6 {[%eval 2,17] [%emt 0:00:21]} 27.
Rac1 {[%eval 13,26] [%emt 0:00:17]} Nde4 {[%eval 0,17] [%emt 0:00:17]} 28. Qd4
{(Bc4) [%eval 0,21] [%emt 0:00:16]} a5 {[%eval -21,17] [%emt 0:00:23]} 29. f5 {
(Bc4) [%eval 14,25] [%emt 0:00:16]} g5 {[%eval -29,16] [%emt 0:00:12]} 30. Ng2
{[%eval -1,26] [%emt 0:00:16]} Qc7 {[%eval -34,17] [%emt 0:00:16]} 31. Qc4 {
(Qb2) [%eval 5,25] [%emt 0:00:15]} b5 {(Re5) [%eval -68,17] [%emt 0:00:34]} 32.
Qxb5 {[%eval -12,28] [%emt 0:00:15]} Qe5 {[%eval -6,15] [%emt 0:00:06]} 33. Bc4
{[%eval -25,29] [%emt 0:00:15]} Qb2 {[%eval -5,16] [%emt 0:00:14]} 34. Qxa5 {
[%eval -25,30] [%emt 0:00:14]} Nd3 {(Qf2+) [%eval -81,16] [%emt 0:00:24]} 35.
Bxf7+ {(Rxd3) [%eval -25,24] [%emt 0:00:14]} Kg7 {
(Kf8) [%eval -423,14] [%emt 0:00:15]} 36. Rc7 {
(Bc4) [%eval -305,21] [%emt 0:00:14]} Qf2+ {
(Rxc7) [%eval -555,15] [%emt 0:00:15]} 37. Kh1 {[%eval -411,24] [%emt 0:00:24]}
Kh6 {[%eval -578,16] [%emt 0:00:14]} 38. Bh5 {
(Bc4) [%eval -456,23] [%emt 0:00:13]} Kxh5 {[%eval -707,15] [%emt 0:00:22]} 39.
h3 {[%eval -609,23] [%emt 0:00:23]} Kh6 {[%eval -1261,15] [%emt 0:00:24]} 40.
Qa7 {(Rxd3) [%eval -775,24] [%emt 0:00:22]} Rxc7 {
(Qxf5) [%eval -32615,16] [%emt 0:00:21]} 41. Qxc7 {
(Qb7) [%eval -32758,26] [%emt 0:00:11]} Nxg3+ {[%eval -32617,15] [%emt 0:00:05]
} 42. Kh2 {(Qxg3) [%eval -32759,34] [%emt 0:00:11]} Ne2 {
(Ne5) [%eval -32617,16] [%emt 0:00:20]} 43. Qd6 {
[%eval -32760,45] [%emt 0:00:11]} Ne5 {[%eval -32760,13] [%emt 0:00:00]} 44.
Qxf6+ {[%eval -32761,100] [%emt 0:00:02]} Kh5 {[%eval -32761,11] [%emt 0:00:00]
} 45. Qxg5+ {[%eval -32762,100] [%emt 0:00:00]} Kxg5 {
[%eval -32762,7] [%emt 0:00:00]} 46. h4+ {[%eval -32763,100] [%emt 0:00:00]}
Kg4 {[%eval -32763,7] [%emt 0:00:00]} 47. Rd4+ {
[%eval -32764,100] [%emt 0:00:00]} Nxd4 {[%eval -32764,5] [%emt 0:00:00]} 48.
exd4 {[%eval -32765,100] [%emt 0:00:00]} Kf3 {
(Nf3+) [%eval -32765,3] [%emt 0:00:00]} 49. dxe5 {
[%eval -32766,100] [%emt 0:00:00]} Qxg2# {[%eval -32766,1] [%emt 0:00:00]} 0-1[/pgn]