Congratulations It's an interesting engine. I have some observations that may be of help to you. I ran a short 100 game test against my own engine Rustic, with the following results:niel5946 wrote: ↑Sun Feb 21, 2021 1:05 pmI have just released my new engine, Loki v1.0.2. It has support for 1 to 8 threads (Lazy SMP) and 1MB to 1000MB hash table and is probably rated around 1600-1800.
It has only been tested on windows and has not shown any bugs on both 32-bit(x86) and 64-bit(x64).
It uses the UCI-protocol.
Rustic Alpha 1 (current first version of my engine) sits at +/- 1680 in CCRL Blitz. Your engine is roughly 100 Elo points stronger (but take the large error bars into account, because it's just 100 games against one engine.) Tentatively, you can rate your engine at 1800.Score of Rustic 2021-02-15 vs Loki 1.0.2: 27 - 57 - 16 [0.350]
... Rustic 2021-02-15 playing White: 11 - 34 - 5 [0.270] 50
... Rustic 2021-02-15 playing Black: 16 - 23 - 11 [0.430] 50
... White vs Black: 34 - 50 - 16 [0.420] 100
Elo difference: -107.5 +/- 65.7, LOS: 0.1 %, DrawRatio: 16.0 %
100 of 100 games finished.
- The engine seems stable. 100 games without problems at least.
- It announces its UCI stuff before the gui asks "UCI". The gui (cute chess at least) ends up with double uci controls like 2 settings for the hash table.
- Using the default of a 16 MB hash table, Loki can out-calculate Rustic in the middle game by 5-7 ply. Middle game depth sits around 12 ply. In the end-game, the difference becomes bigger, where Loki has an advantage of up to 10 ply. This is not surprising, as Rustic Alpha 1 has no transposition table yet.
- Rustic is more aggressive; caused by its (probably) more aggressive PST values.
- It seems Loki has bugs in it's QSearch. Sometimes it grabs pieces it shouldn't, because there's a sequence of moves that makes your engine lose material.
- Sometimes, the engine does strange things, like walk straight into a pin. As in: it puts it's king in such a position that a piece can be pinned and attacked without the possibility of saving it.
- Sometimes, the engine seems to suffer from some sort of depression. It gets a good position, suddenly seems lost / doesn't know what to do, and basically does nothing interesting. Rustic keeps advancing (because it is more aggressive already), and at some point launches a massive tactical assault, while Loki's pieces sit on the wrong side of the board.
- I've seen Loki run into a mating net as if on a suicide mission.
- Rustic is about 60% faster in nodes/second; 4000 kNodes/s vs 2500 kNodes/s. I don't know how complex Loki's search is, but Rustic has nothing but material and PST's.
The last three points could be because of one or more bugs in the alpha/beta search. If you can improve this, your engine will probably gain a few hundred Elo points. Good luck. The search depth your engine reaches is a good motivation to finally get that transposition table into my own engine.