diff --git a/TicTacToe_AI/Chancetree/main.py b/TicTacToe_AI/Chancetree/main.py
new file mode 100644
index 0000000..1608c73
--- /dev/null
+++ b/TicTacToe_AI/Chancetree/main.py
@@ -0,0 +1,107 @@
+import copy
+
+
+class Board:
+    def __init__(self, barray=None):
+        self.board = barray  # 0: unset, -1: circle, 1: cross
+        self.full = self.getfull()
+        self.next = self.getnext()  # Cross always starts
+        self.winner = self.getwinner()
+
+    def __str__(self):
+        retstr = ''
+        for n, block in enumerate(self.board):
+            if (n + 1) % 3 is not 0:
+                retstr += str(block) + '|'
+            else:
+                retstr += str(block) + '\n'
+        return retstr
+
+    # check if the board is full or not
+    def getfull(self):
+        for block in self.board:
+            if block is 0:  # if an unset block is found the board is not full
+                return False
+        return True
+
+    def getnext(self):
+        if self.full:
+            return None
+        countdict = {0: 0, -1: 0, 1: 0}
+
+        for block in self.board:
+            countdict[block] += 1
+
+        if (countdict[-1] > countdict[1]) or (countdict[-1] == countdict[1]):
+            return 1  # cross always starts
+        elif countdict[-1] < countdict[1]:
+            return -1
+
+    def getwinner(self):
+        # check rows
+        if (sum(self.board[0:3]) is -3) or (sum(self.board[3:6]) is -3) or (sum(self.board[6:]) is -3):
+            return -1
+        elif (sum(self.board[0:3]) is 3) or (sum(self.board[3:6]) is 3) or (sum(self.board[6:]) is 3):
+            return 1
+
+        # check colums
+        for i in range(3):
+            if (self.board[0 + i] + self.board[3 + i] + self.board[6 + i]) is -3:
+                return -1
+            elif (self.board[0 + i] + self.board[3 + i] + self.board[6 + i]) is 3:
+                return 1
+
+        # main diagonal
+        if (self.board[0] + self.board[4] + self.board[8]) is -3:
+            return -1
+        elif (self.board[0] + self.board[4] + self.board[8]) is 3:
+            return 1
+
+        # secondary diagonal
+        elif (self.board[2] + self.board[4] + self.board[6]) is -3:
+            return -1
+        elif (self.board[2] + self.board[4] + self.board[6]) is 3:
+            return 1
+
+        return None
+
+    def nextboards(self):
+        if self.full:
+            return
+        else:
+            newboards = []
+            for i, block in enumerate(self.board):
+                if block is 0:
+                    arr = [0, 0, 0, 0, 0, 0, 0, 0, 0]
+
+                    for n in range(9):
+                        arr[n] = self.board[n]
+
+                    b = Board(barray=arr)
+                    b.board[i] = self.next
+                    b.next = b.getnext()
+                    newboards.append(b)
+
+            return newboards
+
+
+class Node:
+    def __init__(self, board):
+        self.board = board
+        self.children = self.genchildren()
+        print('generated node of board: \n' + str(self.board))
+
+    def genchildren(self):
+        children = []
+        for nextboard in self.board.nextboards():
+            n = Node(nextboard)
+            children.append(n)
+        return children
+
+
+if __name__ == '__main__':
+    b = Board(barray=[0, 0, 0,
+                      0, 0, 0,
+                      0, 0, 0])
+
+    n = Node(b)