UCI engines that supports searchmoves for hand and brain variant

[Ferdy]

Does anyone know of other uci engines that support searchmoves.

What I have known so far:

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stockfish
deuterium
cdrill

I plan to create engine matches using the "hand and brain" variant. The brain will suggest a piece and the hand will search a move with that piece suggested by the brain. For example from start position if brain suggests a pawn, the hand is limited to search for a best pawn move i.e e2e4, d2d4, c2c4 and others. The engine handling the hand needs to support searchmoves command because I will send go movetime 1000 searchmoves e2e4 d2d4 and other pawn moves.

[mar]

Cheng does support searchmoves (OwnBook should be disabled first)
excellent idea by the way, sounds like fun. it never occurred to me that searchmoves could be used to play a variant!

[jhonnold]

I know for a fact Berserk does. IIRC Weiss and Ethereal do as well.

[Ferdy]

Some results at TC 0.5s/move with 25 unique start position, color reversed for 50 games total.
Br = brain, Ha = hand

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   # PLAYER                            :  RATING  POINTS  PLAYED   (%)
   1 Br_cdrill_1800_Ha_stockfish_15    :  2346.8    31.5      50    63
   2 Br_stockfish_15_Ha_cdrill_1800    :  2253.2    18.5      50    37

cdrill as brain defeated stockfish as brain.

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   # PLAYER                             :  RATING  POINTS  PLAYED   (%)
   1 Br_madchess_3.0_Ha_stockfish_15    :  2333.0    29.5      50    59
   2 Br_stockfish_15_Ha_madchess_3.0    :  2267.0    20.5      50    41

madchess as brain defeated stockfish as brain.

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   # PLAYER                           :  RATING  POINTS  PLAYED   (%)
   1 Br_cheng_4.41_Ha_stockfish_15    :  2314.3    27.0      50    54
   2 Br_stockfish_15_Ha_cheng_4.41    :  2285.7    23.0      50    46

cheng as brain defeated stockfish as brain.

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   # PLAYER                              :  RATING  POINTS  PLAYED   (%)
   1 Br_stockfish_15_Ha_berserk_8.5.1    :  2303.5    25.5      50    51
   2 Br_berserk_8.5.1_Ha_stockfish_15    :  2296.5    24.5      50    49

stockfish as brain defeated berserk as brain but very close.

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  # PLAYER                               :  RATING  POINTS  PLAYED   (%)
   1 Br_ethereal_13.07_Ha_stockfish_15    :  2303.7    25.5      50    51
   2 Br_stockfish_15_Ha_ethereal_13.07    :  2296.3    24.5      50    49

ethereal as brain defeated stockfish as brain but very close.

It seems like it is preferable to assign a weaker engine as the brain to get optimal team performance.

This hand and brain match manager can be found in github. Install python 3, install python chess, modify config.ini file and run the laban.py script.

[amanjpro]

Some results at TC 0.5s/move with 25 unique start position, color reversed for 50 games total.
Br = brain, Ha = hand

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   # PLAYER                            :  RATING  POINTS  PLAYED   (%)
   1 Br_cdrill_1800_Ha_stockfish_15    :  2346.8    31.5      50    63
   2 Br_stockfish_15_Ha_cdrill_1800    :  2253.2    18.5      50    37

cdrill as brain defeated stockfish as brain.

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   # PLAYER                             :  RATING  POINTS  PLAYED   (%)
   1 Br_madchess_3.0_Ha_stockfish_15    :  2333.0    29.5      50    59
   2 Br_stockfish_15_Ha_madchess_3.0    :  2267.0    20.5      50    41

madchess as brain defeated stockfish as brain.

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   # PLAYER                           :  RATING  POINTS  PLAYED   (%)
   1 Br_cheng_4.41_Ha_stockfish_15    :  2314.3    27.0      50    54
   2 Br_stockfish_15_Ha_cheng_4.41    :  2285.7    23.0      50    46

cheng as brain defeated stockfish as brain.

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   # PLAYER                              :  RATING  POINTS  PLAYED   (%)
   1 Br_stockfish_15_Ha_berserk_8.5.1    :  2303.5    25.5      50    51
   2 Br_berserk_8.5.1_Ha_stockfish_15    :  2296.5    24.5      50    49

stockfish as brain defeated berserk as brain but very close.

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  # PLAYER                               :  RATING  POINTS  PLAYED   (%)
   1 Br_ethereal_13.07_Ha_stockfish_15    :  2303.7    25.5      50    51
   2 Br_stockfish_15_Ha_ethereal_13.07    :  2296.3    24.5      50    49

ethereal as brain defeated stockfish as brain but very close.

It seems like it is preferable to assign a weaker engine as the brain to get optimal team performance.

This hand and brain match manager can be found in github. Install python 3, install python chess, modify config.ini file and run the laban.py script.

Zahak also supports searchmoves

[clumma]

This is a great idea. Crazy that Ferdy's answer on this stackexchange question has zero votes (currently)

https://chess.stackexchange.com/questio ... -be-the-ha

Probably their idiotic karma thresholds for voting or even commenting have something to do with it (I've been a registered SE user for 5 years yet I can't interact with this question in any way).

-Carl

[RubiChess]

RubiChess should support searchmoves. If you discover some problems with it, drop me a note.

regards, Andreas

[Tearth]

Cosette supports searchmoves too, Inanis not yet but I have a plan to do it in the next version to have a full UCI implementation.