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sudoku.py
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from tkinter import *
from timeit import default_timer as timer
from easy_puzzles import easy1,easy2,easy3,easy4
from medium_puzzles import medium1,medium2,medium3,medium4
from hard_puzzles import hard1,hard2,hard3,hard4
from csp import *
MARGIN = 20
SIDE = 50
WIDTH_B = HEIGHT_B = MARGIN * 2 + SIDE * 9
WIDTH = WIDTH_B + 180
class SudokuUI(Frame):
def __init__(self, parent):
self.parent = parent
self.original_board = [[0 for j in range(9)] for i in range(9)]
self.current_board = [row[:] for row in self.original_board]
Frame.__init__(self, parent)
self.row, self.col = 0, 0
self.__initUI()
def __initUI(self):
self.pack(fill=BOTH, expand=1)
self.canvas = Canvas(self, width=WIDTH_B, height=HEIGHT_B)
self.canvas.pack(fill=BOTH, side=TOP)
self.canvas.grid(row=0, column=0, rowspan=30, columnspan=60)
self.level = IntVar(value=1)
self.puzzle = IntVar(value=0)
self.time = StringVar()
self.time.set("Time: ")
self.make_menu()
self.__change_level()
self.clear_button = Button(self, text="Reset", command=self.__clear_board, width=15, height=5)
self.clear_button.grid(row=8, column=61, padx=20, columnspan=3)
self.solve_button = Button(self, text="Solve", command=self.solve_clicked, width=15, height=5)
self.solve_button.grid(row=11, column=61, padx=20, columnspan=3)
lbltime = Label(self, textvariable=self.time)
Label(self, text="Algorithm: ").grid(row=12, column=61)
lbltime.grid(row=30, column=0)
self.choice = StringVar(value="BK")
self.radio = []
self.radio.append(Radiobutton(self, text="Arc Consistency-3", variable=self.choice, value="AC3"))
self.radio[0].grid(row=13, column=61)
self.radio.append(Radiobutton(self, text="Backtracking ", variable=self.choice, value="BK"))
self.radio[1].grid(row=14, column=61)
lbltime.grid(row=30, column=0)
Label(self, text="Choose Puzzle: ").grid(row=16, column=61)
self.radio_puzzles = []
for i in range(4):
self.radio_puzzles.append(Radiobutton(self, text=f"Puzzle {i+1}", variable=self.puzzle, value=i))
self.radio_puzzles[i].bind("<Button-1>", lambda event, idx=i: self.change_puzzle(idx))
for i, radio in enumerate(self.radio_puzzles):
radio.grid(row=17 + i, column=61)
self.__draw_grid()
self.__draw_puzzle()
def solve_clicked(self):
self.solve_sudoku()
def solve_sudoku(self):
s = SudokuCSP(self.current_board)
start = timer()
if self.choice.get() == "BK":
result = backtracking_search(s, select_unassigned_variable=mrv, order_domain_values=unordered_domain_values,
inference=forward_checking)
elif self.choice.get() == "AC3":
if AC3(s):
if all(len(s.curr_domains['CELL'+str(i)]) == 1 for i in range(81)):
result = {('CELL' + str(i)): s.curr_domains['CELL' + str(i)][0] for i in range(81)}
else:
result = None
# result = backtracking_search(s, select_unassigned_variable=mrv, order_domain_values=unordered_domain_values,inference=mac)
end = timer()
if result:
for i in range(9):
for j in range(9):
index = i * 9 + j
self.current_board[i][j] = result.get("CELL" + str(index))
else:
print("Invalid sudoku Puzzle")
self.__draw_puzzle()
self.time.set("Time: "+str(round(end-start, 5))+" seconds")
for rb in self.radio:
rb.config(state=NORMAL)
self.clear_button.config(state=NORMAL)
self.solve_button.config(state=NORMAL)
self.menu_bar.entryconfig("Level", state="normal")
def make_menu(self):
self.menu_bar = Menu(self.parent)
self.parent.configure(menu=self.menu_bar)
level_menu = Menu(self.menu_bar, tearoff=False)
self.menu_bar.add_cascade(label="Level", menu=level_menu)
level_menu.add_radiobutton(label="Easy", variable=self.level, value=1, command=self.__change_level)
level_menu.add_radiobutton(label="Medium", variable=self.level, value=2, command=self.__change_level)
level_menu.add_radiobutton(label="Hard", variable=self.level, value=3, command=self.__change_level)
def __draw_grid(self):
for i in range(10):
if i % 3 == 0:
color = "black"
else:
color = "gray"
x0 = MARGIN + i * SIDE
y0 = MARGIN
x1 = MARGIN + i * SIDE
y1 = HEIGHT_B - MARGIN
self.canvas.create_line(x0, y0, x1, y1, fill=color)
x0 = MARGIN
y0 = MARGIN + i * SIDE
x1 = WIDTH_B - MARGIN
y1 = MARGIN + i * SIDE
self.canvas.create_line(x0, y0, x1, y1, fill=color)
def __draw_puzzle(self):
self.canvas.delete("numbers")
self.time.set("Time: ")
for i in range(9):
for j in range(9):
cell = self.current_board[i][j]
if cell != 0:
x = MARGIN + j * SIDE + SIDE / 2
y = MARGIN + i * SIDE + SIDE / 2
if str(cell) == str(self.original_board[i][j]):
self.canvas.create_text(x, y, text=cell, tags="numbers", fill="black")
else:
self.canvas.create_text(x, y, text=cell, tags="numbers", fill="red")
def __clear_board(self):
self.current_board = [row[:] for row in self.original_board]
self.__draw_puzzle()
def __change_level(self):
level = self.level.get()
if level == 1:
if self.puzzle.get() == 0:
self.original_board = easy1()
elif self.puzzle.get() == 1:
self.original_board = easy2()
elif self.puzzle.get() == 2:
self.original_board = easy3()
elif self.puzzle.get() == 3:
self.original_board = easy4()
elif level == 2:
if self.puzzle.get() == 0:
self.original_board = medium1()
elif self.puzzle.get() == 1:
self.original_board = medium2()
elif self.puzzle.get() == 2:
self.original_board = medium3()
elif self.puzzle.get() == 3:
self.original_board = medium4()
elif level == 3:
if self.puzzle.get() == 0:
self.original_board = hard1()
elif self.puzzle.get() == 1:
self.original_board = hard2()
elif self.puzzle.get() == 2:
self.original_board = hard3()
elif self.puzzle.get() == 3:
self.original_board = hard4()
self.current_board = [row[:] for row in self.original_board]
self.__draw_puzzle()
def change_puzzle(self, idx):
if self.level.get() == 1:
if idx == 0:
self.original_board = easy1()
elif idx == 1:
self.original_board = easy2()
elif idx == 2:
self.original_board = easy3()
elif idx == 3:
self.original_board = easy4()
elif self.level.get() == 2:
if idx == 0:
self.original_board = medium1()
elif idx == 1:
self.original_board = medium2()
elif idx == 2:
self.original_board = medium3()
elif idx == 3:
self.original_board = medium4()
elif self.level.get() == 3:
if idx == 0:
self.original_board = hard1()
elif idx == 1:
self.original_board = hard2()
elif idx == 2:
self.original_board = hard3()
elif idx == 3:
self.original_board = hard4()
self.current_board = [row[:] for row in self.original_board]
self.__draw_puzzle()
class SudokuCSP(CSP):
def __init__(self, board):
self.domains = {}
self.neighbors = {}
for v in range(81):
self.neighbors.update({'CELL' + str(v): {}})
for i in range(9):
for j in range(9):
name = (i * 9 + j)
var = "CELL"+str(name)
self.add_neighbor(var, self.get_row(i) | self.get_column(j) | self.get_square(i, j))
if board[i][j] != 0:
self.domains.update({var: str(board[i][j])})
else:
self.domains.update({var: '123456789'})
CSP.__init__(self, None, self.domains, self.neighbors, different_values_constraint)
def get_square(self, i, j):
if i < 3:
if j < 3:
return self.get_square_box(0)
elif j < 6:
return self.get_square_box(3)
else:
return self.get_square_box(6)
elif i < 6:
if j < 3:
return self.get_square_box(27)
elif j < 6:
return self.get_square_box(30)
else:
return self.get_square_box(33)
else:
if j < 3:
return self.get_square_box(54)
elif j < 6:
return self.get_square_box(57)
else:
return self.get_square_box(60)
def get_square_box(self, index):
tmp = set()
tmp.add("CELL"+str(index))
tmp.add("CELL"+str(index+1))
tmp.add("CELL"+str(index+2))
tmp.add("CELL"+str(index+9))
tmp.add("CELL"+str(index+10))
tmp.add("CELL"+str(index+11))
tmp.add("CELL"+str(index+18))
tmp.add("CELL"+str(index+19))
tmp.add("CELL"+str(index+20))
return tmp
def get_column(self, index):
return {'CELL'+str(j) for j in range(index, index+81, 9)}
def get_row(self, index):
return {('CELL' + str(x + index * 9)) for x in range(9)}
def add_neighbor(self, var, elements):
self.neighbors.update({var: {x for x in elements if x != var}})
root = Tk()
SudokuUI(root)
root.title("Sudoku")
root.mainloop()