Peacekeeper - UCI engine
Author: Kyle Zhang Rating Chess Engines Diary CEDR=3518
v.3.00:
This release features the usual improved NNUE and search. The NNUE network is now trained on standard and FRC data generated by an external data source (Lc0). There are also some search patches. It is very sad to say, but Peacekeeper development is paused indefinitely. I partially fried my laptop running SPRT tests, and now have no more working hardware to test patches. However, if any serious bugs are reported, I will make a bugfix release.
In standard chess, this release is 77 elo stronger in selfplay, and I have not yet run a gauntlet against other opponents of similar strength. The version is expected to scale significantly better, and a test at 60+0.6 it gains 105 elo.
Elo | 77.27 +- 17.00 (95%)
Conf | 5.0+0.05s Threads=1 Hash=8MB
Games | N: 1010 W: 417 L: 196 D: 397
Penta | [13, 61, 179, 196, 56]
In DFRC, this release is roughly the same strength in selfplay.
Elo | -10.06 +- 15.85 (95%)
Conf | 5.0+0.05s Threads=1 Hash=8MB
Games | N: 1002 W: 257 L: 286 D: 459
Penta | [35, 119, 209, 116, 22]
Based on the strength gains, v3.00 should have a blitz elo of about 3630, LTC elo of about 3500, and FRC elo of about 3780 (on CCRL scales).
A note on executables: Different executables for windows have been compiled for different instruction sets. AVX512 is the fastest, followed by AVX2, and POPCNT. Pick the fastest one that doesn't crash on your computer.
Peacekeeper 2.40 - result:
| Obsidian 12.0 | 3.5/22 | -15 | 22 Partii |
| Clarity 6.0.0 | 8.5/18 | -1 | 18 Partii |
| Velvet 7.3.0 | 6/18 | -6 | 18 Partii |
| Alexandria 6.1.0 | 5/16 | -6 | 16 Partii |
| Rebel 16.3 | 3.5/16 | -9 | 16 Partii |
| Alexander 1.1 | 6.5/14 | -1 | 14 Partii |
| Vafra 14.12.1 Stockfish | 5/14 | -4 | 14 Partii |
| Clover 6.1.19 | 4/14 | -6 | 14 Partii |
| Caissa 1.18 | 3.5/14 | -7 | 14 Partii |
| Yakka 1.0 | 12/12 | +12 | 12 Partii |
| Zagreus 5.0 | 12/12 | +12 | 12 Partii |
| Berserk 13 | 2/12 | -8 | 12 Partii |
| Victoire 1.3.0 | 10/10 | +10 | 10 Partii |
| Tcheran 2.2 | 10/10 | +10 | 10 Partii |
| Arasan 24.2 | 6.5/10 | +3 | 10 Partii |
| Akimbo 1.0.0 | 5.5/10 | +1 | 10 Partii |
| RubiChess 20240112 | 3.5/10 | -3 | 10 Partii |
| Cadabra 2.0.1 | 8/8 | +8 | 8 Partii |
| Fatalii 0.6.1 | 8/8 | +8 | 8 Partii |
| Saturn 1.3 | 4.5/8 | +1 | 8 Partii |
| Chess-System-Tal-2 | 3/8 | -2 | 8 Partii |
Peacekeeper 2.40 - tournament result:
| Tournament |
score |
progres |
note |
| 3 League CEDR ed/03.2024 | 21/30 | +12 | Rank 1 |
| 2024.04.10.New Engines Test | 23/38 | +8 | |
| 2024.04.12.Middle Class Engines Test | 32.5/46 | +19 | |
| 2024.04.13 New Amateur EnginesTest | 39.5/56 | +23 | |
| 2024.04.18 New Amateur Engines Test | 23.5/34 | +13 | |
| 2024 04 20 Test Tournament CEDR | 14/32 | -4 |
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