Module sudoku.strategies.refresh_candidates¶
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View Source
from __future__ import annotations
from typing import TYPE_CHECKING
from .strategy import Strategy
if TYPE_CHECKING:
from ..puzzle import Puzzle, T
class RefreshCandidates(Strategy):
"""
Remove invalid candidates from each cell
"""
def __init__(self):
super().__init__(difficulty=0.769)
def __call__(self, puzzle: Puzzle[T]) -> int:
candidate_eliminations = 0
for i, cell in enumerate(puzzle.cells):
for _, peer in puzzle._peers(i):
if cell.is_blank() and not peer.is_blank():
if peer.value in cell.candidates:
cell.candidates.remove(peer.value)
candidate_eliminations += 1
return candidate_eliminations
__all__ = "RefreshCandidates"
Classes¶
RefreshCandidates¶
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View Source
class RefreshCandidates(Strategy):
"""
Remove invalid candidates from each cell
"""
def __init__(self):
super().__init__(difficulty=0.769)
def __call__(self, puzzle: Puzzle[T]) -> int:
candidate_eliminations = 0
for i, cell in enumerate(puzzle.cells):
for _, peer in puzzle._peers(i):
if cell.is_blank() and not peer.is_blank():
if peer.value in cell.candidates:
cell.candidates.remove(peer.value)
candidate_eliminations += 1
return candidate_eliminations
Ancestors (in MRO)¶
- sudoku.strategies.strategy.Strategy
Instance variables¶
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