Backgammon Web API
Backgammon Web API. Sophisticed neural net based multi-ply evalution engine for Backgammon moves.
Based on GNU Backgammon (https://www.gnu.org/software/gnubg) under GPL license.
Features:
- Calculate best moves for a given Backgammon position
Features to-do:
- Calculate cube decisions
Want to see the Backgammon Web API in action? Have a look at https://github.com/foochu/bgweb-terminal.
Running the API server
Run via Docker
# 1 - install docker
# 2 - run the program:
docker run -p 8080:8080 -d foochu/bgweb-api:latest
# 3 - browse to http://localhost:8080
Run from source
# 1 - install Go
# 2 - clone this repo
# 3 - run the program:
go run .
# 4 - browse to http://localhost:8080
Get best moves
Parameters
board= Board layoutx= Layout for playerx1-24= Number of chequers at each pointbar= Number of chequers on bar
o= Layout for playero1-24= Number of chequers at each pointbar= Number of chequers on bar
cubeful= Is doubling cube at play? Affects equity algorithm.dice= 2-slot array of dice rollmax-moves= Max number of moves to returnplayer= Player who's turn it is to move, eitherxoroscore-moves= Calculate equity & winning chance. Iffalsejust returns list of legal moves.
Example
For example, get top moves for starting position and dice roll 3-1 for player x:
curl -L -X POST 'http://localhost:8080/api/v1/getmoves' \
-H 'accept: application/json' \
-H 'Content-Type: application/json' \
--data-raw '{
"board": {
"o": {
"6": 5,
"8": 3,
"13": 5,
"24": 2
},
"x": {
"6": 5,
"8": 3,
"13": 5,
"24": 2
}
},
"cubeful": false,
"dice": [3, 1],
"max-moves": 3,
"player": "x",
"score-moves": true
}'
Return moves in order of preference based on equity and winning chance:
[
{
"play": [
{
"from": "8",
"to": "5"
},
{
"from": "6",
"to": "5"
}
],
"evaluation": {
"info": {
"cubeful": false,
"plies": 1
},
"eq": 0.159,
"diff": 0,
"probability": {
"win": 0.551,
"winG": 0.174,
"winBG": 0.013,
"lose": 0.449,
"loseG": 0.124,
"loseBG": 0.005
}
}
},
{
"play": [
{
"from": "13",
"to": "10"
},
{
"from": "24",
"to": "23"
}
],
"evaluation": {
"info": {
"cubeful": false,
"plies": 1
},
"eq": -0.009,
"diff": -0.168,
"probability": {
"win": 0.497,
"winG": 0.137,
"winBG": 0.008,
"lose": 0.503,
"loseG": 0.14,
"loseBG": 0.007
}
}
},
{
"play": [
{
"from": "24",
"to": "21"
},
{
"from": "21",
"to": "20"
}
],
"evaluation": {
"info": {
"cubeful": false,
"plies": 1
},
"eq": -0.015,
"diff": -0.175,
"probability": {
"win": 0.497,
"winG": 0.125,
"winBG": 0.005,
"lose": 0.503,
"loseG": 0.135,
"loseBG": 0.004
}
}
}
]
