PSQT for move ordering ?
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PSQT for move ordering ?
*Where can I find them ? & why isn't it used more , is it not worth it ?
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- Posts: 211
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- Full name: Patrik Karlsson
Re: PSQT for move ordering ?
Well, you have to write the code. It's not something you find in a box in the garage.MahmoudUthman wrote:Where can I find them
Do you mean what values to use? I use the same tables as in the evaluation function.
psq[piecetype][to_sq] - psq[piecetype][from_sq]
That's it. I use it only for moves with no history score. Probably doesn't add much strength, if any.
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Re: PSQT for move ordering ?
I meant values , & I thought they were supposed to be different :elpapa wrote:Well, you have to write the code. It's not something you find in a box in the garage.MahmoudUthman wrote:Where can I find them
Do you mean what values to use? I use the same tables as in the evaluation function.
psq[piecetype][to_sq] - psq[piecetype][from_sq]
That's it. I use it only for moves with no history score. Probably doesn't add much strength, if any.
http://www.top-5000.nl/authors/rebel/ch ... 20ORDERING
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- Full name: Patrik Karlsson
Re: PSQT for move ordering ?
I don't know why they should be different. That example with the knight is pretty close to typical values for a normal psqt, I think.
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Re: PSQT for move ordering ?
Most of the move ordering methods I have tried (except history, which is standard) have been ELO losers, but your mileage may vary.
--Jon
--Jon