A rectangular maze puzzle visualization with clearly marked start and goal positions. The maze is algorithmically generated to guarantee exactly one solution path from start to finish. The clean black-and-white design is optimized for printing, allowing users to solve the puzzle with a pen or pencil.
""" anyplot.ai
maze-printable: Printable Maze Puzzle
Library: plotly 6.7.0 | Python 3.13.13
Quality: 85/100 | Updated: 2026-05-16
"""
import os
import numpy as np
import plotly.graph_objects as go
# Theme tokens
THEME = os.getenv("ANYPLOT_THEME", "light")
PAGE_BG = "#FAF8F1" if THEME == "light" else "#1A1A17"
INK = "#1A1A17" if THEME == "light" else "#F0EFE8"
INK_SOFT = "#4A4A44" if THEME == "light" else "#B8B7B0"
BRAND = "#009E73" # Okabe-Ito position 1
# Maze generation parameters
np.random.seed(42)
width = 25
height = 25
# Initialize maze grid (True = wall, False = passage)
# Using cells and walls representation
maze = np.ones((2 * height + 1, 2 * width + 1), dtype=bool)
# Mark all cells as passages initially (odd indices)
for y in range(height):
for x in range(width):
maze[2 * y + 1, 2 * x + 1] = False
# DFS maze generation algorithm
visited = np.zeros((height, width), dtype=bool)
stack = [(0, 0)]
visited[0, 0] = True
directions = [(0, 1), (1, 0), (0, -1), (-1, 0)] # right, down, left, up
while stack:
cy, cx = stack[-1]
# Find unvisited neighbors
neighbors = []
for dy, dx in directions:
ny, nx = cy + dy, cx + dx
if 0 <= ny < height and 0 <= nx < width and not visited[ny, nx]:
neighbors.append((ny, nx, dy, dx))
if neighbors:
# Choose random neighbor
ny, nx, dy, dx = neighbors[np.random.randint(len(neighbors))]
# Remove wall between current cell and neighbor
maze[2 * cy + 1 + dy, 2 * cx + 1 + dx] = False
visited[ny, nx] = True
stack.append((ny, nx))
else:
stack.pop()
# Create entrance (top of first cell) and exit (bottom of last cell)
maze[0, 1] = False # Entrance opening at top-left
maze[2 * height, 2 * width - 1] = False # Exit opening at bottom-right
# Create figure
fig = go.Figure()
# Theme-specific colors for maze elements
if THEME == "light":
# Light theme: black walls on white background (printable)
wall_color = INK
passage_color = None # Passages implicit as white background
else:
# Dark theme: explicitly draw passages as medium gray for visibility
wall_color = INK_SOFT # Light gray walls
passage_color = "#4A4A44" # Medium gray passages (distinct from dark bg and light walls)
# Draw maze elements as shapes
wall_shapes = []
for y in range(maze.shape[0]):
for x in range(maze.shape[1]):
if maze[y, x]: # Wall
wall_shapes.append(
{
"type": "rect",
"x0": x - 0.5,
"y0": (maze.shape[0] - 1 - y) - 0.5,
"x1": x + 0.5,
"y1": (maze.shape[0] - 1 - y) + 0.5,
"fillcolor": wall_color,
"line": {"width": 0},
}
)
elif THEME == "dark" and passage_color: # Passage in dark theme
wall_shapes.append(
{
"type": "rect",
"x0": x - 0.5,
"y0": (maze.shape[0] - 1 - y) - 0.5,
"x1": x + 0.5,
"y1": (maze.shape[0] - 1 - y) + 0.5,
"fillcolor": passage_color,
"line": {"width": 0},
}
)
# Add start marker "START" above entrance opening with arrow pointing down
start_x = 1 # Entrance column in maze coordinates
start_y = maze.shape[0] - 1 - 0 # Top row (entrance)
fig.add_annotation(
x=start_x,
y=start_y + 2, # Position above the maze
text="<b>START</b>",
font={"size": 32, "color": BRAND},
showarrow=True,
arrowhead=2,
arrowsize=2,
arrowwidth=4,
arrowcolor=BRAND,
ay=-50, # Arrow points down
ax=0,
yanchor="bottom",
)
# Add goal marker "GOAL" below exit opening with arrow pointing up
goal_x = maze.shape[1] - 2 # Exit column in maze coordinates
goal_y = 0 # Bottom row (exit)
fig.add_annotation(
x=goal_x,
y=goal_y - 2, # Position below the maze
text="<b>GOAL</b>",
font={"size": 32, "color": BRAND},
showarrow=True,
arrowhead=2,
arrowsize=2,
arrowwidth=4,
arrowcolor=BRAND,
ay=50, # Arrow points up
ax=0,
yanchor="top",
)
# Update layout
fig.update_layout(
title={
"text": "maze-printable · plotly · anyplot.ai",
"font": {"size": 36, "color": INK},
"x": 0.5,
"xanchor": "center",
},
shapes=wall_shapes,
xaxis={
"showgrid": False,
"zeroline": False,
"showticklabels": False,
"scaleanchor": "y",
"scaleratio": 1,
"range": [-3, maze.shape[1] + 2],
"showline": False,
},
yaxis={
"showgrid": False,
"zeroline": False,
"showticklabels": False,
"range": [-4, maze.shape[0] + 3],
"showline": False,
},
plot_bgcolor=PAGE_BG,
paper_bgcolor=PAGE_BG,
margin={"l": 60, "r": 60, "t": 100, "b": 60},
width=3600,
height=3600,
)
# Save as PNG and HTML
fig.write_image(f"plot-{THEME}.png", width=3600, height=3600, scale=1)
fig.write_html(f"plot-{THEME}.html", include_plotlyjs="cdn")
Part of Printable Maze Puzzle on anyplot.ai.