Sorting losing captures ?
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Sorting losing captures ?
What is the best technique for sorting losing captures ?
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Re: Sorting losing captures ?
I sort by MVV/LVA and then when the move is actually being used, if it is a capture, I do SEE and if the score is negative the move is deferred - it goes into a "losing capures" array and moves are fetched out of there only at the end of move generation, assuming the search ever gets there.
--Jon
--Jon
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Re: Sorting losing captures ?
have you tried the same thing using just MVV in the main search ?jdart wrote:I sort by MVV/LVA and then when the move is actually being used, if it is a capture, I do SEE and if the score is negative the move is deferred - it goes into a "losing capures" array and moves are fetched out of there only at the end of move generation, assuming the search ever gets there.
--Jon
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Re: Sorting losing captures ?
No, I have not.have you tried the same thing using just MVV in the main search ?
--Jon
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Re: Sorting losing captures ?
Long ago I tried the following. I am not claiming it is the best .MahmoudUthman wrote:What is the best technique for sorting losing captures ?
Code: Select all
Deuterium
Version 09.01.26.492 (21Dec09)
[...]
8. Added capture killer moves, these are lossing capture moves that produces a cutoff.
[...]
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Re: Sorting losing captures ?
How do you know if a losing capture is not winning sacrifice ? So only near the leaves losing captures are applicable.
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Re: Sorting losing captures ?
I have experimented with that too, but the results I found were not very convincing.Ferdy wrote: Long ago I tried the following. I am not claiming it is the best .Code: Select all
Deuterium Version 09.01.26.492 (21Dec09) [...] 8. Added capture killer moves, these are lossing capture moves that produces a cutoff. [...]
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Re: Sorting losing captures ?
Making captures killers works for me. The only captures that are excluded from killers are moves that capture the last moved piece.Ferdy wrote:Long ago I tried the following. I am not claiming it is the best :).Code: Select all
Deuterium Version 09.01.26.492 (21Dec09) [...] 8. Added capture killer moves, these are lossing capture moves that produces a cutoff. [...]