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pst.py
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pst.py
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#!/usr/bin/env python3
# Piece-Square Tables from
# https://chessprogramming.org/Simplified+evaluation+function
import chess
pst = {}
# pawn
pst[chess.PAWN] = [
0, 0, 0, 0, 0, 0, 0, 0,
50, 50, 50, 50, 50, 50, 50, 50,
10, 10, 20, 30, 30, 20, 10, 10,
5, 5, 10, 25, 25, 10, 5, 5,
0, 0, 0, 20, 20, 0, 0, 0,
5, -5,-10, 0, 0,-10, -5, 5,
5, 10, 10,-20,-20, 10, 10, 5,
0, 0, 0, 0, 0, 0, 0, 0
]
# knight
pst[chess.KNIGHT] = [
-50,-40,-30,-30,-30,-30,-40,-50,
-40,-20, 0, 0, 0, 0,-20,-40,
-30, 0, 10, 15, 15, 10, 0,-30,
-30, 5, 15, 20, 20, 15, 5,-30,
-30, 0, 15, 20, 20, 15, 0,-30,
-30, 5, 10, 15, 15, 10, 5,-30,
-40,-20, 0, 5, 5, 0,-20,-40,
-50,-40,-30,-30,-30,-30,-40,-50,
]
# bishop
pst[chess.BISHOP] = [
-20,-10,-10,-10,-10,-10,-10,-20,
-10, 0, 0, 0, 0, 0, 0,-10,
-10, 0, 5, 10, 10, 5, 0,-10,
-10, 5, 5, 10, 10, 5, 5,-10,
-10, 0, 10, 10, 10, 10, 0,-10,
-10, 10, 10, 10, 10, 10, 10,-10,
-10, 5, 0, 0, 0, 0, 5,-10,
-20,-10,-10,-10,-10,-10,-10,-20,
]
# rook
pst[chess.ROOK] = [
0, 0, 0, 0, 0, 0, 0, 0,
5, 10, 10, 10, 10, 10, 10, 5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
-5, 0, 0, 0, 0, 0, 0, -5,
0, 0, 0, 5, 5, 0, 0, 0
]
# queen
pst[chess.QUEEN] = [
-20,-10,-10, -5, -5,-10,-10,-20,
-10, 0, 0, 0, 0, 0, 0,-10,
-10, 0, 5, 5, 5, 5, 0,-10,
-5, 0, 5, 5, 5, 5, 0, -5,
0, 0, 5, 5, 5, 5, 0, -5,
-10, 5, 5, 5, 5, 5, 0,-10,
-10, 0, 5, 0, 0, 0, 0,-10,
-20,-10,-10, -5, -5,-10,-10,-20
]
# king middle game
pst[chess.KING] = [
-30,-40,-40,-50,-50,-40,-40,-30,
-30,-40,-40,-50,-50,-40,-40,-30,
-30,-40,-40,-50,-50,-40,-40,-30,
-30,-40,-40,-50,-50,-40,-40,-30,
-20,-30,-30,-40,-40,-30,-30,-20,
-10,-20,-20,-20,-20,-20,-20,-10,
20, 20, 0,-10,-10, 0, 20, 20,
20, 30, 10, 0, 0, 10, 30, 20
]
# king end game
pst[8] = [
-50,-40,-30,-20,-20,-30,-40,-50,
-30,-20,-10, 0, 0,-10,-20,-30,
-30,-10, 20, 30, 30, 20,-10,-30,
-30,-10, 30, 40, 40, 30,-10,-30,
-30,-10, 30, 40, 40, 30,-10,-30,
-30,-10, 20, 30, 30, 20,-10,-30,
-30,-30, 0, 0, 0, 0,-30,-30,
-50,-30,-30,-30,-30,-30,-30,-50
]