diff --git a/examples/README.md b/examples/README.md
index 39e3381..2dbd50d 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -7,7 +7,7 @@ The ones marked with (clp) requires `clp` library of SWI-Prolog.
 * (clp) `coins/`
 * (clp) `draughts/`
 * `hanoi/` : Towers of Hanoi
-* (clp) `sendmoremoney/` : if, SEND * MORE = MONEY, what is S, E, N, D, M, O, R, Y?
-* (clp) `sudoku/` : Sudoku solver (Prolog code is contributed by Markus Triska)
-* `create_term.py` : shows creating a Prolog term
-* `register_foreign.py` : shows registering a foreign function
+* (clp) `sendmoremoney/` : If, SEND * MORE = MONEY, what is S, E, N, D, M, O, R, Y?
+* (clp) `sudoku/` : Moved to `pyswip.examples.sudoku` package 
+* `create_term.py` : Shows creating a Prolog term
+* `register_foreign.py` : Shows registering a foreign function
diff --git a/examples/sudoku/sudoku.pl b/examples/sudoku/sudoku.pl
deleted file mode 100644
index d572c20..0000000
--- a/examples/sudoku/sudoku.pl
+++ /dev/null
@@ -1,26 +0,0 @@
-
-% Prolog Sudoku Solver (C) 2007 Markus Triska (triska@gmx.at)
-% Public domain code.
-
-:- use_module(library(bounds)).
-
-% Pss is a list of lists representing the game board.
-
-sudoku(Pss) :-
-    flatten(Pss, Ps),
-    Ps in 1..9,
-    maplist(all_different, Pss),
-    Pss = [R1,R2,R3,R4,R5,R6,R7,R8,R9],
-    columns(R1, R2, R3, R4, R5, R6, R7, R8, R9),
-    blocks(R1, R2, R3), blocks(R4, R5, R6), blocks(R7, R8, R9),
-    label(Ps).
-
-columns([], [], [], [], [], [], [], [], []).
-columns([A|As],[B|Bs],[C|Cs],[D|Ds],[E|Es],[F|Fs],[G|Gs],[H|Hs],[I|Is]) :-
-    all_different([A,B,C,D,E,F,G,H,I]),
-    columns(As, Bs, Cs, Ds, Es, Fs, Gs, Hs, Is).
-
-blocks([], [], []).
-blocks([X1,X2,X3|R1], [X4,X5,X6|R2], [X7,X8,X9|R3]) :-
-    all_different([X1,X2,X3,X4,X5,X6,X7,X8,X9]),
-    blocks(R1, R2, R3).
diff --git a/examples/sudoku/sudoku.py b/examples/sudoku/sudoku.py
deleted file mode 100644
index 50cf5eb..0000000
--- a/examples/sudoku/sudoku.py
+++ /dev/null
@@ -1,86 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# pyswip -- Python SWI-Prolog bridge
-# Copyright (c) 2007-2018 Yüce Tekol
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-
-from pyswip.prolog import Prolog
-
-
-_ = 0
-puzzle1 = [
-    [_, 6, _, 1, _, 4, _, 5, _],
-    [_, _, 8, 3, _, 5, 6, _, _],
-    [2, _, _, _, _, _, _, _, 1],
-    [8, _, _, 4, _, 7, _, _, 6],
-    [_, _, 6, _, _, _, 3, _, _],
-    [7, _, _, 9, _, 1, _, _, 4],
-    [5, _, _, _, _, _, _, _, 2],
-    [_, _, 7, 2, _, 6, 9, _, _],
-    [_, 4, _, 5, _, 8, _, 7, _],
-]
-
-
-puzzle2 = [
-    [_, _, 1, _, 8, _, 6, _, 4],
-    [_, 3, 7, 6, _, _, _, _, _],
-    [5, _, _, _, _, _, _, _, _],
-    [_, _, _, _, _, 5, _, _, _],
-    [_, _, 6, _, 1, _, 8, _, _],
-    [_, _, _, 4, _, _, _, _, _],
-    [_, _, _, _, _, _, _, _, 3],
-    [_, _, _, _, _, 7, 5, 2, _],
-    [8, _, 2, _, 9, _, 7, _, _],
-]
-
-
-def pretty_print(table):
-    print("".join(["/---", "----" * 8, "\\"]))
-    for row in table:
-        print("".join(["|", "|".join(" %s " % (i or " ") for i in row), "|"]))
-    print("".join(["\\---", "----" * 8, "/"]))
-
-
-def solve(problem):
-    Prolog.consult("sudoku.pl", relative_to=__file__)
-    p = str(problem).replace("0", "_")
-    result = list(Prolog.query("L=%s,sudoku(L)" % p, maxresult=1))
-    if result:
-        result = result[0]
-        return result["L"]
-    else:
-        return False
-
-
-def main():
-    puzzle = puzzle1
-    print("-- PUZZLE --")
-    pretty_print(puzzle)
-    print()
-    print(" -- SOLUTION --")
-    solution = solve(puzzle)
-    if solution:
-        pretty_print(solution)
-    else:
-        print("This puzzle has no solutions [is it valid?]")
-
-
-if __name__ == "__main__":
-    main()
diff --git a/examples/sudoku/sudoku_daily.py b/examples/sudoku/sudoku_daily.py
deleted file mode 100644
index 7d11915..0000000
--- a/examples/sudoku/sudoku_daily.py
+++ /dev/null
@@ -1,98 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# pyswip -- Python SWI-Prolog bridge
-# Copyright (c) 2007-2018 Yüce Tekol
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in all
-# copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-
-
-# Sudoku auto-solver. Get today's sudoku at http://www.sudoku.org.uk/daily.asp
-# and solve it
-
-from html.parser import HTMLParser
-import urllib.request as urllib_request
-
-from pyswip.prolog import Prolog
-
-
-class DailySudokuPuzzle(HTMLParser):
-    def __init__(self):
-        self.puzzle = []
-        self.__in_td = False
-        HTMLParser.__init__(self)
-
-    def handle_starttag(self, tag, attrs):
-        if tag == "td":
-            for attr in attrs:
-                if attr[0] == "class" and attr[1] == "InnerTDone":
-                    self.__in_td = True
-                    break
-        elif tag == "input":
-            if self.__in_td:
-                self.puzzle.append(0)
-
-    def handle_endtag(self, tag):
-        if tag == "td":
-            self.__in_td = False
-
-    def handle_data(self, data):
-        if self.__in_td:
-            self.puzzle.append(int(data))
-
-
-def pretty_print(table):
-    print("".join(["/---", "----" * 8, "\\"]))
-    for row in table:
-        print("".join(["|", "|".join(" %s " % (i or " ") for i in row), "|"]))
-    print("".join(["\\---", "----" * 8, "/"]))
-
-
-def get_daily_sudoku(url):
-    puzzle = DailySudokuPuzzle()
-    f = urllib_request.urlopen(url)
-    puzzle.feed(f.read().decode("latin-1"))
-    puzzle = puzzle.puzzle
-    return [puzzle[i * 9 : i * 9 + 9] for i in range(9)]
-
-
-def solve(problem):
-    Prolog.consult("sudoku.pl", relative_to=__file__)
-    p = str(problem).replace("0", "_")
-    result = list(Prolog.query(f"Puzzle={p},sudoku(Puzzle)", maxresult=1))
-    if result:
-        result = result[0]
-        return result["Puzzle"]
-    else:
-        return False
-
-
-if __name__ == "__main__":
-    URL = "https://www.sudoku.org.uk/daily.asp"
-
-    print("Getting puzzle from:", URL)
-    puzzle = get_daily_sudoku(URL)
-    print("-- PUZZLE --")
-    pretty_print(puzzle)
-    print()
-    print("-- SOLUTION --")
-    solution = solve(puzzle)
-    if solution:
-        pretty_print(solution)
-    else:
-        print("This puzzle has no solutions [is it valid?]")
diff --git a/src/pyswip/examples/sudoku.py b/src/pyswip/examples/sudoku.py
index 92236a7..955b8dc 100644
--- a/src/pyswip/examples/sudoku.py
+++ b/src/pyswip/examples/sudoku.py
@@ -119,19 +119,19 @@ def prolog_source() -> str:
 
 def main():
     puzzle = Matrix.from_text("""
-. 6 . 1 . 4 . 5 .
-. . 8 3 . 5 6 . .
-2 . . . . . . . 1
-8 . . 4 . 7 . . 6
-. . 6 . . . 3 . .
-7 . . 9 . 1 . . 4
-5 . . . . . . . 2
-. . 7 2 . 6 9 . .
-. 4 . 5 . 8 . 7 .
-""")
-    print("-- PUZZLE --")
+. . 5 . 7 . 2 6 8
+. . 4 . . 2 . . .
+. . 1 . 9 . . . .
+. 8 . . . . 1 . .
+. 2 . 9 . . . 7 .
+. . 6 . . . . 3 .
+. . 2 . 4 . 7 . .
+. . . 5 . . 9 . .
+9 5 7 . 3 . . . .    
+    """)
+    print("\n-- PUZZLE --")
     puzzle.pretty_print()
-    print(" -- SOLUTION --")
+    print("\n-- SOLUTION --")
     solution = solve(puzzle)
     if solution:
         solution.pretty_print()