diff --git a/tuixiangzi.py b/tuixiangzi.py
deleted file mode 100644
index 0c1b68a..0000000
--- a/tuixiangzi.py
+++ /dev/null
@@ -1,351 +0,0 @@
-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