Connection
Base URL, credentials and a reachable server.
Product
Product features · Bounded queen placements
01
Follow placements row by row and distinguish an empty-board solution from a board size with no valid placements.
Selection
A model available through the configured endpoint.
Capabilities
Context limits and tool support are determined by the model and server.
Bounded queen placements
● ● ●QueenVellum●
A concrete starting point · Bounded queen placements ×
def queens(size):
if type(size) is not int or not 0 <= size <= 8:
raise ValueError("size.range")
result = []
def visit(columns, down, up):
row = len(columns)
if row == size:
result.append(tuple(columns))
return
for column in range(size):
if column not in columns and row-column not in down and row+column not in up:
visit(columns + [column], down | {row-column}, up | {row+column})
visit([], set(), set())
return result✳Enumerate nonattacking queen placements on boards of size zero through eight.
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Illustrative workspace