antonum / redis.sunfish.lua

Chess engine, running entirely inside the Redis database. Port of Lua Sunfish chess engine.

redis.sunfish.lua

Tiny and basic chess engine for lua, enabled for running as Lua script in the Redis database.

• Redis port of https://github.com/soumith/sunfish.lua
• Which is a Port of https://github.com/thomasahle/sunfish

Usage

As EVALSHA script:

redis-cli -x script load < sunfish.lua
"3438f0ce3d5b00844625ee078b772ab5263ca199"
redis-cli                             
127.0.0.1:6379> evalsha 3438f0ce3d5b00844625ee078b772ab5263ca199 0
 1) "                    "
 2) " 8  r n b q k b n r "
 3) " 7  p p p p p p p p "
 4) " 6  . . . . . . . . "
 5) " 5  . . . . . . . . "
 6) " 4  . . . . . . . . "
 7) " 3  . . . . . . . . "
 8) " 2  P P P P P P P P "
 9) " 1  R N B Q K B N R "
10) "                    "
11) "    a b c d e f g h "
12) "your move: "
127.0.0.1:6379> evalsha 3438f0ce3d5b00844625ee078b772ab5263ca199 0 e2e4
 1) "                    "
 2) " 8  r n b q k b . r "
 3) " 7  p p p p p p p p "
 4) " 6  . . . . . n . . "
 5) " 5  . . . . . . . . "
 6) " 4  . . . . P . . . "
 7) " 3  . . . . . . . . "
 8) " 2  P P P P . P P P "
 9) " 1  R N B Q K B N R "
10) "                    "
11) "    a b c d e f g h "
12) "your move: "
(1.58s)
127.0.0.1:6379> evalsha 3438f0ce3d5b00844625ee078b772ab5263ca199 0 d2d3
 1) "                    "
 2) " 8  r . b q k b . r "
 3) " 7  p p p p p p p p "
 4) " 6  . . n . . n . . "
 5) " 5  . . . . . . . . "
 6) " 4  . . . . P . . . "
 7) " 3  . . . P . . . . "
 8) " 2  P P P . . P P P "
 9) " 1  R N B Q K B N R "
10) "                    "
11) "    a b c d e f g h "
12) "your move: "
(2.50s)
127.0.0.1:6379> 

As Redis Function (Redis 7.0+)

cat sunfish.lua | redis-cli -p 7000 -x FUNCTION LOAD Lua mylib REPLACE
redis-cli -p 7000
127.0.0.1:7000> FCALL chess 0 e2e4