diff --git a/tuixiangzi.py b/tuixiangzi.py
new file mode 100644
index 0000000..0c1b68a
--- /dev/null
+++ b/tuixiangzi.py
@@ -0,0 +1,351 @@
+import pygame, sys, os
+from pygame.locals import *
+
+from collections import deque
+
+
+def to_box(level, index):
+    if level[index] == '-' or level[index] == '@':
+        level[index] = '$'
+    else:
+        level[index] = '*'
+
+
+def to_man(level, i):
+    if level[i] == '-' or level[i] == '$':
+        level[i] = '@'
+    else:
+        level[i] = '+'
+
+
+def to_floor(level, i):
+    if level[i] == '@' or level[i] == '$':
+        level[i] = '-'
+    else:
+        level[i] = '.'
+
+
+def to_offset(d, width):
+    d4 = [-1, -width, 1, width]
+    m4 = ['l', 'u', 'r', 'd']
+    return d4[m4.index(d.lower())]
+
+
+def b_manto(level, width, b, m, t):
+    maze = list(level)
+    maze[b] = '#'
+    if m == t:
+        return 1
+    queue = deque([])
+    queue.append(m)
+    d4 = [-1, -width, 1, width]
+    m4 = ['l', 'u', 'r', 'd']
+    while len(queue) > 0:
+        pos = queue.popleft()
+        for i in range(4):
+            newpos = pos + d4[i]
+            if maze[newpos] in ['-', '.']:
+                if newpos == t:
+                    return 1
+                maze[newpos] = i
+                queue.append(newpos)
+    return 0
+
+
+def b_manto_2(level, width, b, m, t):
+    maze = list(level)
+    maze[b] = '#'
+    maze[m] = '@'
+    if m == t:
+        return []
+    queue = deque([])
+    queue.append(m)
+    d4 = [-1, -width, 1, width]
+    m4 = ['l', 'u', 'r', 'd']
+    while len(queue) > 0:
+        pos = queue.popleft()
+        for i in range(4):
+            newpos = pos + d4[i]
+            if maze[newpos] in ['-', '.']:
+                maze[newpos] = i
+                queue.append(newpos)
+                if newpos == t:
+                    path = []
+                    while maze[t] != '@':
+                        path.append(m4[maze[t]])
+                        t = t - d4[maze[t]]
+                    return path
+
+    return []
+
+
+class Sokoban:
+    def __init__(self):
+        self.level = list(
+            '----#####--------------#---#--------------#$--#------------###--$##-----------#--$-$-#---------###-#-##-#---#######---#-##-#####--..##-$--$----------..######-###-#@##--..#----#-----#########----#######--------')
+        self.w = 19
+        self.h = 11
+        self.man = 163
+        self.hint = list(self.level)
+        self.solution = []
+        self.push = 0
+        self.todo = []
+        self.auto = 0
+        self.sbox = 0
+        self.queue = []
+
+    def draw(self, screen, skin):
+        w = skin.get_width() / 4
+        offset = (w - 4) / 2
+        for i in range(0, self.w):
+            for j in range(0, self.h):
+                if self.level[j * self.w + i] == '#':
+                    screen.blit(skin, (i * w, j * w), (0, 2 * w, w, w))
+                elif self.level[j * self.w + i] == '-':
+                    screen.blit(skin, (i * w, j * w), (0, 0, w, w))
+                elif self.level[j * self.w + i] == '@':
+                    screen.blit(skin, (i * w, j * w), (w, 0, w, w))
+                elif self.level[j * self.w + i] == '$':
+                    screen.blit(skin, (i * w, j * w), (2 * w, 0, w, w))
+                elif self.level[j * self.w + i] == '.':
+                    screen.blit(skin, (i * w, j * w), (0, w, w, w))
+                elif self.level[j * self.w + i] == '+':
+                    screen.blit(skin, (i * w, j * w), (w, w, w, w))
+                elif self.level[j * self.w + i] == '*':
+                    screen.blit(skin, (i * w, j * w), (2 * w, w, w, w))
+                if self.sbox != 0 and self.hint[j * self.w + i] == '1':
+                    screen.blit(skin, (i * w + offset, j * w + offset), (3 * w, 3 * w, 4, 4))
+
+    def move(self, d):
+        self._move(d)
+        self.todo = []
+
+    def _move(self, d):
+        self.sbox = 0
+        h = to_offset(d, self.w)
+        h2 = 2 * h
+        if self.level[self.man + h] == '-' or self.level[self.man + h] == '.':
+            # move
+            to_man(self.level, self.man + h)
+            to_floor(self.level, self.man)
+            self.man += h
+            self.solution += d
+        elif self.level[self.man + h] == '*' or self.level[self.man + h] == '$':
+            if self.level[self.man + h2] == '-' or self.level[self.man + h2] == '.':
+                # push
+                to_box(self.level, self.man + h2)
+                to_man(self.level, self.man + h)
+                to_floor(self.level, self.man)
+                self.man += h
+                self.solution += d.upper()
+                self.push += 1
+
+    def undo(self):
+        if self.solution.__len__() > 0:
+            self.todo.append(self.solution[-1])
+            self.solution.pop()
+
+            h = to_offset(self.todo[-1], self.w) * -1
+            if self.todo[-1].islower():
+                # undo a move
+                to_man(self.level, self.man + h)
+                to_floor(self.level, self.man)
+                self.man += h
+            else:
+                # undo a push
+                to_floor(self.level, self.man - h)
+                to_box(self.level, self.man)
+                to_man(self.level, self.man + h)
+                self.man += h
+                self.push -= 1
+
+    def redo(self):
+        if self.todo.__len__() > 0:
+            self._move(self.todo[-1].lower())
+            self.todo.pop()
+
+    def manto(self, x, y):
+        maze = list(self.level)
+        maze[self.man] = '@'
+        queue = deque([])
+        queue.append(self.man)
+        d4 = [-1, -self.w, 1, self.w]
+        m4 = ['l', 'u', 'r', 'd']
+        while len(queue) > 0:
+            pos = queue.popleft()
+            for i in range(4):
+                newpos = pos + d4[i]
+                if maze[newpos] in ['-', '.']:
+                    maze[newpos] = i
+                    queue.append(newpos)
+        # print str(maze)
+        t = y * self.w + x
+        if maze[t] in range(4):
+            self.todo = []
+            while maze[t] != '@':
+                self.todo.append(m4[maze[t]])
+                t = t - d4[maze[t]]
+        # print self.todo
+        self.auto = 1
+
+    def automove(self):
+        if self.auto == 1 and self.todo.__len__() > 0:
+            self._move(self.todo[-1].lower())
+            self.todo.pop()
+        else:
+            self.auto = 0
+
+    def boxhint(self, x, y):
+        d4 = [-1, -self.w, 1, self.w]
+        m4 = ['l', 'u', 'r', 'd']
+        b = y * self.w + x
+        maze = list(self.level)
+        to_floor(maze, b)
+        to_floor(maze, self.man)
+        mark = maze * 4
+        size = self.w * self.h
+        self.queue = []
+        head = 0
+        for i in range(4):
+            if b_manto(maze, self.w, b, self.man, b + d4[i]):
+                if len(self.queue) == 0:
+                    self.queue.append((b, i, -1))
+                mark[i * size + b] = '1'
+        # print self.queue
+        while head < len(self.queue):
+            pos = self.queue[head]
+            head += 1
+            # print pos
+            for i in range(4):
+                if mark[pos[0] + i * size] == '1' and maze[pos[0] - d4[i]] in ['-', '.']:
+                    # print i
+                    if mark[pos[0] - d4[i] + i * size] != '1':
+                        self.queue.append((pos[0] - d4[i], i, head - 1))
+                        for j in range(4):
+                            if b_manto(maze, self.w, pos[0] - d4[i], pos[0], pos[0] - d4[i] + d4[j]):
+                                mark[j * size + pos[0] - d4[i]] = '1'
+        for i in range(size):
+            self.hint[i] = '0'
+            for j in range(4):
+                if mark[j * size + i] == '1':
+                    self.hint[i] = '1'
+        # print self.hint
+
+    def boxto(self, x, y):
+        d4 = [-1, -self.w, 1, self.w]
+        m4 = ['l', 'u', 'r', 'd']
+        om4 = ['r', 'd', 'l', 'u']
+        b = y * self.w + x
+        maze = list(self.level)
+        to_floor(maze, self.sbox)
+        to_floor(maze, self.man)  # make a copy of working maze by removing the selected box and the man
+        for i in range(len(self.queue)):
+            if self.queue[i][0] == b:
+                self.todo = []
+                j = i
+                while self.queue[j][2] != -1:
+                    self.todo.append(om4[self.queue[j][1]].upper())
+                    k = self.queue[j][2]
+                    if self.queue[k][2] != -1:
+                        self.todo += b_manto_2(maze, self.w, self.queue[k][0], self.queue[k][0] + d4[self.queue[k][1]],
+                                               self.queue[k][0] + d4[self.queue[j][1]])
+                    else:
+                        self.todo += b_manto_2(maze, self.w, self.queue[k][0], self.man,
+                                               self.queue[k][0] + d4[self.queue[j][1]])
+                    j = k
+                # print self.todo
+                self.auto = 1
+                return
+        print('not found!')
+
+    def mouse(self, x, y):
+        if x >= self.w or y >= self.h:
+            return
+        m = y * self.w + x
+        if self.level[m] in ['-', '.']:
+            if self.sbox == 0:
+                self.manto(x, y)
+            else:
+                self.boxto(x, y)
+        elif self.level[m] in ['$', '*']:
+            if self.sbox == m:
+                self.sbox = 0
+            else:
+                self.sbox = m
+                self.boxhint(x, y)
+        elif self.level[m] in ['-', '.', '@', '+']:
+            self.boxto(x, y)
+
+
+def main():
+    # start pygame
+    pygame.init()
+    screen = pygame.display.set_mode((400, 300))
+
+    # load skin
+    skinfilename = os.path.join('borgar.png')
+    try:
+        skin = pygame.image.load(skinfilename)
+    except pygame.error as msg:
+        print('cannot load skin')
+        raise SystemExit(msg)
+    skin = skin.convert()
+
+    # print skin.get_at((0,0))
+    # screen.fill((255,255,255))
+    screen.fill(skin.get_at((0, 0)))
+    pygame.display.set_caption('sokoban.py')
+
+    # create Sokoban object
+    skb = Sokoban()
+    skb.draw(screen, skin)
+
+    #
+    clock = pygame.time.Clock()
+    pygame.key.set_repeat(200, 50)
+
+    # main game loop
+    while True:
+        clock.tick(60)
+
+        if skb.auto == 0:
+            for event in pygame.event.get():
+                if event.type == QUIT:
+                    # print skb.solution
+                    pygame.quit()
+                    sys.exit()
+                elif event.type == KEYDOWN:
+                    if event.key == K_LEFT:
+                        skb.move('l')
+                        skb.draw(screen, skin)
+                    elif event.key == K_UP:
+                        skb.move('u')
+                        skb.draw(screen, skin)
+                    elif event.key == K_RIGHT:
+                        skb.move('r')
+                        skb.draw(screen, skin)
+                    elif event.key == K_DOWN:
+                        skb.move('d')
+                        skb.draw(screen, skin)
+                    elif event.key == K_BACKSPACE:
+                        skb.undo()
+                        skb.draw(screen, skin)
+                    elif event.key == K_SPACE:
+                        skb.redo()
+                        skb.draw(screen, skin)
+                elif event.type == MOUSEBUTTONUP and event.button == 1:
+                    mousex, mousey = event.pos
+                    mousex /= (skin.get_width() / 4)
+                    mousey /= (skin.get_width() / 4)
+                    skb.mouse(mousex, mousey)
+                    skb.draw(screen, skin)
+        else:
+            skb.automove()
+            skb.draw(screen, skin)
+
+        pygame.display.update()
+        pygame.display.set_caption(skb.solution.__len__().__str__() + '/' + skb.push.__str__() + ' - sokoban.py')
+
+
+if __name__ == '__main__':
+    main()
\ No newline at end of file