Tinapa 1.01 based on Stockfish

[swami]

Announced on Open-Chess.org by Chris Formula

http://www.open-chess.org/viewtopic.php?f=7&t=406

It definitely is slightly stronger than Stockfish 1.8.

Logo by Dave:





http://sites.google.com/site/strategict ... st-results

1000 Positions
10 seconds per position
Hardware: Q6600, 32 bits, 2 GB RAM, 2.4 GHZ. Arena 2.01 GUI.

[zamar]

And here is the actual change

Code: Select all

// Null move dynamic reduction based on depth
-        int R = 3 + (depth >= 5 * OnePly ? depth / 8 : 0);
+        int R = 3 + (depth >= 9 ? 1 : 0) + (depth >= 15 ? 1 : 0) + (depth >= 21 ? 1 : 0) + (depth >= 27 ? 1 : 0) + (depth >= 33 ? 1 : 0) + (depth >= 39 ? 1 : 0);

With more aggressive null move pruning you gain some speed which translates to increased performance in test suites.

However risk of tactical oversights grows which may hurt in actual games.

Still, I feel it's worth a try

[mcostalba]

And here is the actual change

you may also want to rewrite in this way to better spot the difference:

Code: Select all

// Null move dynamic reduction based on depth
-        int R = 3 + (depth >= 5 * OnePly ? depth / 8 : 0);
+        int R = 3 + (depth >  4 * OnePly ? (depth - 3) / 6 : 0);

Nothing earth shattering, just a small tweak to null reduction formula in particular a bit more aggressive now. I expect very small ELO difference (in either direction) if any.

A pity people finds easier to get a nice name then testing his pacthes

[Albert Silver]

And here is the actual change

you may also want to rewrite in this way to better spot the difference:

Code: Select all

// Null move dynamic reduction based on depth
-        int R = 3 + (depth >= 5 * OnePly ? depth / 8 : 0);
+        int R = 3 + (depth >  4 * OnePly ? (depth - 3) / 6 : 0);

Nothing earth shattering, just a small tweak to null reduction formula in particular a bit more aggressive now. I expect very small ELO difference (in either direction) if any.

A pity people finds easier to get a nice name then testing his pacthes

I will soon be releasing GargleBlaster 1.01, an improved version of Stockfish. Though there are no code changes of any kind, I did some major work on the name, achieving a new level of tweakdom. I still have some fine-tuning to do, but stay on the lookout for further announcements.

[Uri Blass]

And here is the actual change

you may also want to rewrite in this way to better spot the difference:

Code: Select all

// Null move dynamic reduction based on depth
-        int R = 3 + (depth >= 5 * OnePly ? depth / 8 : 0);
+        int R = 3 + (depth >  4 * OnePly ? (depth - 3) / 6 : 0);

Nothing earth shattering, just a small tweak to null reduction formula in particular a bit more aggressive now. I expect very small ELO difference (in either direction) if any.

A pity people finds easier to get a nice name then testing his pacthes

I will soon be releasing GargleBlaster 1.01, an improved version of Stockfish. Though there are no code changes of any kind, I did some major work on the name, achieving a new level of tweakdom. I still have some fine-tuning to do, but stay on the lookout for further announcements.

Some questions:

1)How many hours did you work on the name?
2)Can we expect the new name to convince better programmers to work on the code?

If the reply to 2 is yes then
I admit that your new name is an improvement.

[mariaclara]

kinda OT:

Tinapa is the Filipino name of smoked "galunggong" fish.
it's very delicious.

[Albert Silver]

I will soon be releasing GargleBlaster 1.01, an improved version of Stockfish. Though there are no code changes of any kind, I did some major work on the name, achieving a new level of tweakdom. I still have some fine-tuning to do, but stay on the lookout for further announcements.

Some questions:

1)How many hours did you work on the name?

One cannot measure these things properly in hours. Creativity and imagination can manifest themselves in a fraction of a second, which may be the only thing we are aware of, while the subconscious has been working on it for days, weeks, or more, without our noticing.

2)Can we expect the new name to convince better programmers to work on the code?

If the reply to 2 is yes then
I admit that your new name is an improvement.

Expectations are dangerous, especially when based on factors over which one has no control. If the better programmers are tickled by the name, or inspired by the reference to a classic work of comic sci-fi, then yes, possibly. Note that this is not the first reference to the aforementioned work. Hsu and co. did it first.

[Dr.Wael Deeb]

I will soon be releasing GargleBlaster 1.01, an improved version of Stockfish. Though there are no code changes of any kind, I did some major work on the name, achieving a new level of tweakdom. I still have some fine-tuning to do, but stay on the lookout for further announcements.

Some questions:

1)How many hours did you work on the name?

One cannot measure these things properly in hours. Creativity and imagination can manifest themselves in a fraction of a second, which may be the only thing we are aware of, while the subconscious has been working on it for days, weeks, or more, without our noticing.

2)Can we expect the new name to convince better programmers to work on the code?

If the reply to 2 is yes then
I admit that your new name is an improvement.

Expectations are dangerous, especially when based on factors over which one has no control. If the better programmers are tickled by the name, or inspired by the reference to a classic work of comic sci-fi, then yes, possibly. Note that this is not the first reference to the aforementioned work. Hsu and co. did it first.

Wow Albert,I'm impressed
Cheers,
Dr.D

[benstoker]

I will soon be releasing GargleBlaster 1.01, an improved version of Stockfish. Though there are no code changes of any kind, I did some major work on the name, achieving a new level of tweakdom. I still have some fine-tuning to do, but stay on the lookout for further announcements.

Some questions:

1)How many hours did you work on the name?

One cannot measure these things properly in hours. Creativity and imagination can manifest themselves in a fraction of a second, which may be the only thing we are aware of, while the subconscious has been working on it for days, weeks, or more, without our noticing.

2)Can we expect the new name to convince better programmers to work on the code?

If the reply to 2 is yes then
I admit that your new name is an improvement.

Expectations are dangerous, especially when based on factors over which one has no control. If the better programmers are tickled by the name, or inspired by the reference to a classic work of comic sci-fi, then yes, possibly. Note that this is not the first reference to the aforementioned work. Hsu and co. did it first.

Some of the comments in SF have periods at the end like so:

Code: Select all

/// EndgameFunctions member definitions.

But other comments are missing the periods, like so:

Code: Select all

/// MaterialInfoTable c'tor and d'tor, called once by each thread

I have corrected this and put periods on the end of all comments consistently and if the developers don't accept this patch, I will be releasing my own version also.

[Matthias Gemuh]

Some of the comments in SF have periods at the end like so:

Code: Select all

/// EndgameFunctions member definitions.

But other comments are missing the periods, like so:

Code: Select all

/// MaterialInfoTable c'tor and d'tor, called once by each thread

I have corrected this and put periods on the end of all comments consistently and if the developers don't accept this patch, I will be releasing my own version also.

Not worth the pain. Such a patch increases playing strength by only 10 Elo points.

.